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• Data breakpoints to find points where data gets broken

  - by raccoon_tim

  When working with a large code base, finding reasons for bizarre bugs can often be like finding a needle in a hay stack. Finding out why an object gets corrupted without no apparent reason can be quite daunting, especially when it seems to happen randomly and totally out of context. Scenario Take the following scenario as an example. You have defined the a class that contains an array of characters that is 256 characters long. You now implement a method for filling this buffer with a string passed as an argument. At this point you mistakenly expect the buffer to be 256 characters long. At some point you notice that you require another character buffer and you add that after the previous one in the class definition. You now figure that you don’t need the 256 characters that the first member can hold and you shorten that to 128 to conserve space. At this point you should start thinking that you also have to modify the method defined above to safeguard against buffer overflow. It so happens, however, that in this not so perfect world this does not cross your mind. Buffer overflow is one of the most frequent sources for errors in a piece of software and often one of the most difficult ones to detect, especially when data is read from an outside source. Many mass copy functions provided by the C run-time provide versions that have boundary checking (defined with the _s suffix) but they can not guard against hard coded buffer lengths that at some point get changed. Finding the bug Getting back to the scenario, you’re now wondering why does the second string get modified with data that makes no sense at all. Luckily, Visual Studio provides you with a tool to help you with finding just these kinds of errors. It’s called data breakpoints. To add a data breakpoint, you first run your application in debug mode or attach to it in the usual way, and then go to Debug, select New Breakpoint and New Data Breakpoint. In the popup that opens, you can type in the memory address and the amount of bytes you wish to monitor. You can also use an expression here, but it’s often difficult to come up with an expression for data in an object allocated on the heap when not in the context of a certain stack frame. There are a couple of things to note about data breakpoints, however. First of all, Visual Studio supports a maximum of four data breakpoints at any given time. Another important thing to notice is that some C run-time functions modify memory in kernel space which does not trigger the data breakpoint. For instance, calling ReadFile on a buffer that is monitored by a data breakpoint will not trigger the breakpoint. The application will now break at the address you specified it to. Often you might immediately spot the issue but the very least this feature can do is point you in the right direction in search for the real reason why the memory gets inadvertently modified. Conclusions Data breakpoints are a great feature, especially when doing a lot of low level operations where multiple locations modify the same data. With the exception of some special cases, like kernel memory modification, you can use it whenever you need to check when memory at a certain location gets changed on purpose or inadvertently.

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• Where should instantiated classes be stored?

  - by Eric C.

  I'm having a bit of a design dilemma here. I'm writing a library that consists of a bunch of template classes that are designed to be used as a base for creating content. For example: public class Template { public string Name {get; set;} public string Description {get; set;} public string Attribute1 {get; set;} public string Attribute2 {get; set;} public Template() { //constructor } public void DoSomething() { //does something } ... } The problem is, not only is the library providing the templates, it will also supply quite a few predefined templates which are instances of these template classes. The question is, where do I put these instances of the templates? The three solutions I've come up with so far are: 1) Provide serialized instances of the templates as files. On the one hand, this solution would keep the instances separated from the library itself, which is nice, but it would also potentially add complexity for the user. Even if we provided methods for loading/deserializing the files, they'd still have to deal with a bunch of files, and some kind of config file so the app knows where to look for those files. Plus, creating the template files would probably require a separate app, so if the user wanted to stick with the files method of storing templates, we'd have to provide some kind of app for creating the template files. Also, this requires external dependencies for testing the templates in the user's code. 2) Add readonly instances to the template class Example: public class Template { public string Name {get; set;} public string Description {get; set;} public string Attribute1 {get; set;} public string Attribute2 {get; set;} public Template PredefinedTemplate { get { Template templateInstance = new Template(); templateInstance.Name = "Some Name"; templateInstance.Description = "A description"; ... return templateInstance; } } public Template() { //constructor } public void DoSomething() { //does something } ... } This method would be convenient for users, as they would be able to access the predefined templates in code directly, and would be able to unit test code that used them. The drawback here is that the predefined templates pollute the Template type namespace with a bunch of extra stuff. I suppose I could put the predefined templates in a different namespace to get around this drawback. The only other problem with this approach is that I'd have to basically duplicate all the namespaces in the library in the predefined namespace (e.g. Templates.SubTemplates and Predefined.Templates.SubTemplates) which would be a pain, and would also make refactoring more difficult. 3) Make the templates abstract classes and make the predefined templates inherit from those classes. For example: public abstract class Template { public string Name {get; set;} public string Description {get; set;} public string Attribute1 {get; set;} public string Attribute2 {get; set;} public Template() { //constructor } public void DoSomething() { //does something } ... } and public class PredefinedTemplate : Template { public PredefinedTemplate() { this.Name = "Some Name"; this.Description = "A description"; this.Attribute1 = "Some Value"; ... } } This solution is pretty similar to #2, but it ends up creating a lot of classes that don't really do anything (none of our predefined templates are currently overriding behavior), and don't have any methods, so I'm not sure how good a practice this is. Has anyone else had any experience with something like this? Is there a best practice of some kind, or a different/better approach that I haven't thought of? I'm kind of banging my head against a wall trying to figure out the best way to go. Thanks!

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• MVC Communication Pattern

  - by Kedu

  This is kind of a follow up question to this http://stackoverflow.com/questions/23743285/model-view-controller-and-callbacks, but I wanted to post it separately, because its kind of a different topic. I'm working on a multiplayer cardgame for the Android platform. I split the project into MVC which fits the needs pretty good, but I'm currently stuck because I can't figure out a good way to communicate between the different parts. I have everything setup and working with the controller being a big state machine, which is called over and over from the gameloop, and calls getter methods from the GUI and the android/network part to get the input. The input itself in the GUI and network is set by inputlisteners that set a local variable which I read in the getter method. So far so good, this is working. But my problem is, the controller has to check every input separately,so if I want to add an input I have to check in which states its valid and call the getter method from all these states. This is not good, and lets the code look pretty ugly, makes additions uncomfortable and adds redundance. So what I've got from the question I mentioned above is that some kind of command or event pattern will fit my needs. What I want to do is to create a shared and threadsafe queue in the controller and instead of calling all these getter methods, I just check the queue for new input and proceed it. On the other side, the GUI and network don't have all these getters, but instead create an event or command and send it to the controller through, for example, observer/observable. Now my problem: I can't figure out a way, for these commands/events to fit a common interface (which the queue can store) and still transport different kind of data (button clicks, cards that are played, the player id the command comes from, synchronization data etc.). If I design the communication as command pattern, I have to stick all the information that is needed to execute the command into it when its created, that's impossible because the GUI or network has no knowledge of all the things the controller needs to execute stuff that needs to be done when for example a card is played. I thought about getting this stuff into the command when executing it. But over all the different commands I have, I would need all the information the controller has, and thus give the command a reference to the controller which would make everything in it public, which is real bad design I guess. So, I could try some kind of event pattern. I have to transport data in the event. So, like the command, I would have an interface, which all events have in common, and can be stored in the shared queue. I could create a big enum with all the different events that a are possible, save one of these enums in the actual event, and build a big switch case for the events, to proceed different stuff for different events. The problem here: I have different data for all the events. But I need a common interface, to store the events in a queue. How do I get the specific data, if I can only access the event through the interface? Even if that wouldn't be a problem, I'm creating another big switch case, which looks ugly, and when i want to add a new event, I have to create the event itself, the case, the enum, and the method that's called with the data. I could of course check the event with the enum and cast it to its type, so I can call event type specific methods that give me the data I need, but that looks like bad design too.

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• Using HTML5 Today part 3&ndash; Using Polyfills

  - by Steve Albers

  Shims helps when adding semantic tags to older IE browsers, but there is a huge range of other new HTML5 features that having varying support on browsers.  Polyfills are JavaScript code and/or browser plug-ins that can provide older or less featured browsers with API support.  The best polyfills will detect the whether the current browser has native support, and only adds the functionality if necessary.  The Douglas Crockford JSON2.js library is an example of this approach: if the browser already supports the JSON object, nothing changes.  If JSON is not available, the library adds a JSON property in the global object. This approach provides some big benefits: It lets you add great new HTML5 features to your web sites sooner. It lets the developer focus on writing to the up-and-coming standard rather than proprietary APIs. Where most one-off legacy code fixes tends to break down over time, well done polyfills will stop executing over time (as customer browsers natively support the feature) meaning polyfill code may not need to be tested against new browsers since they will execute the native methods instead. Your should also remember that Polyfills represent an entirely separate code path (and sometimes plug-in) that requires testing for support.  Also Polyfills tend to run on older browsers, which often have slower JavaScript performance.  As a result you might find that performance on older browsers is not comparable. When looking for Polyfills you can start by checking the Modernizr GitHub wiki or the HTML5 Please site. For an example of a polyfill consider a page that writes a few geometric shapes on a <canvas> <script src="jquery-1.7.1.min.js"><script> <script> $(document).ready(function () { drawCanvas(); }); function drawCanvas() { var context = $("canvas")[0].getContext('2d'); //background context.fillStyle = "#8B0000"; context.fillRect(5, 5, 300, 100); // emptybox context.strokeStyle = "#B0C4DE"; context.lineWidth = 4; context.strokeRect(20, 15, 80, 80); // circle context.arc(160, 55, 40, 0, Math.PI * 2, false); context.fillStyle = "#4B0082"; context.fill(); </script>   The result is a simple static canvas with a box & a circle:   …to enable this functionality on a pre-canvas browser we can find a polyfill.  A check on html5please.com references  FlashCanvas.  Pull down the zip and extract the files (flashcanvas.js, flash10canvas.swf, etc) to a directory on your site.  Then based on the documentation you need to add a single line to your original HTML file: <!--[if lt IE 9]><script src="flashcanvas.js"></script><![endif]—> …and you have canvas functionality!  The IE conditional comments ensure that the library is only loaded in browsers where it is useful, improving page load & processing time. Like all Polyfills, you should test to verify the functionality matches your expectations across browsers you need to support.  For instance the Flash Canvas home page advertises 70% support of HTML5 Canvas spec tests.

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• Drive

  - by erikanollwebb

  Picking up where we left off, let's summarize.  People have both intrinsic motivation and extrinsic motivation, and whether reward works depends a bit on what you are rewarding.  Rewards don't decreased intrinsic motivation provided you know what you are getting and why, and when you reward high performance.  But as anyone who has watched the great animation of Dan Pink's TED talk knows, even that doesn't tell the whole story.  Although people may not be less intrinsically motivated by rewards, the impact of rewards on actual performance is a really odd questions.  Larger rewards don't necessarily lead to better performance and in fact, some times lead to worse performance.  Pink argues that people are driven and engaged when they have autonomy, mastery and purpose.  If they can self-direct and can be good at what they do and have a sense of purpose for what they are doing, they show the highest engagement.   (Personally, I would add progress to the list.  My experience is that if you have autonomy, mastery and a sense of purpose but don't get a feeling that you are making any progress day to day, your level of engagement will drop rapidly.) So Pink is arguing if we could set up work so that people have a sense of purpose in what they do, have some autonomy and the ability to build mastery, you'll have better companies.  And that's probably true in a lot of ways, but there's a problem.  Sometimes, you have things you need to do but maybe you don't really want to do.  Or that you don't really see the point of.  Or that doesn't have a lot of value to you at the end of the day.  Then what does a company do?  Let me give you an example.  I've worked on some customer relationship management (CRM) tools over the years and done user research with sales people to try and understand their world.  And there's a funny thing about sales tools in CRM.  Sometimes what the company wants a sales person to do is at odds with what a sales person thinks is useful to them.  For example, companies would like to know who a sales person talked to at the company and the person level.  They'd like to know what they talked about, when, and whether the deals closed.  Those metrics would help you build a better sales force and understand what works and what does not.  But sales people see that as busy work that doesn't add any value to their ability to sell.  So you have a sales person who has a lot of autonomy, they like to do things that improve their ability to sell and they usually feel a sense of purpose--the group is trying to make a quota!  That quota will help the company succeed!  But then you have tasks that they don't think fit into that equation.  The company would like to know more about what makes them successful and get metrics on what they do and frankly, have a record of what they do in case they leave, but the sales person thinks it's a waste of time to put all that information into a sales application. They have drive, just not for all the things the company would like.   You could punish them for not entering the information, or you could try to reward them for doing it, but you still have an imperfect model of engagement.  Ideally, you'd like them to want to do it.  If they want to do it, if they are motivated to do it, then the company wins.  If *something* about it is rewarding to them, then they are more engaged and more likely to do it.  So the question becomes, how do you create that interest to do something?

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• edited and reversed changes on .htaccess - site starts redirecting to .comindex.php/

  - by Aurigae

  Site is a Joomla 2.5 site. I wanted to add a non www to www redirect to the htaccess file, did so, then the redirection went mad, reversed but still the site redirects. When i click view site in admin panel, i get linked to http://domain.comindex.php/ The website is http://www.domain.com Visiting the website URL works without www, but once you click on projects it acts mad too. Projects is managed with joomshopping extension. EDIT: the redirect also happens when rewrite is deactivated in admin panel. ## # @package Joomla # @copyright Copyright (C) 2005 - 2012 Open Source Matters. All rights reserved. # @license GNU General Public License version 2 or later; see LICENSE.txt ## ## # READ THIS COMPLETELY IF YOU CHOOSE TO USE THIS FILE! # # The line just below this section: 'Options +FollowSymLinks' may cause problems # with some server configurations. It is required for use of mod_rewrite, but may already # be set by your server administrator in a way that dissallows changing it in # your .htaccess file. If using it causes your server to error out, comment it out (add # to # beginning of line), reload your site in your browser and test your sef url's. If they work, # it has been set by your server administrator and you do not need it set here. ## ## Can be commented out if causes errors, see notes above. Options +FollowSymLinks ## Mod_rewrite in use. RewriteEngine On ## Begin - Rewrite rules to block out some common exploits. # If you experience problems on your site block out the operations listed below # This attempts to block the most common type of exploit `attempts` to Joomla! # # Block out any script trying to base64_encode data within the URL. RewriteCond %{QUERY_STRING} base64_encode[^(]*\([^)]*\) [OR] # Block out any script that includes a <script> tag in URL. RewriteCond %{QUERY_STRING} (<|%3C)([^s]*s)+cript.*(>|%3E) [NC,OR] # Block out any script trying to set a PHP GLOBALS variable via URL. RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR] # Block out any script trying to modify a _REQUEST variable via URL. RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2}) # Return 403 Forbidden header and show the content of the root homepage RewriteRule .* index.php [F] # ## End - Rewrite rules to block out some common exploits. ## Begin - Custom redirects # # If you need to redirect some pages, or set a canonical non-www to # www redirect (or vice versa), place that code here. Ensure those # redirects use the correct RewriteRule syntax and the [R=301,L] flags. # ## End - Custom redirects ## # Uncomment following line if your webserver's URL # is not directly related to physical file paths. # Update Your Joomla! Directory (just / for root). ## # RewriteBase / ## Begin - Joomla! core SEF Section. # RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}] # # If the requested path and file is not /index.php and the request # has not already been internally rewritten to the index.php script RewriteCond %{REQUEST_URI} !^/index\.php # and the request is for something within the component folder, # or for the site root, or for an extensionless URL, or the # requested URL ends with one of the listed extensions RewriteCond %{REQUEST_URI} /component/|(/[^.]*|\.(php|html?|feed|pdf|vcf|raw))$ [NC] # and the requested path and file doesn't directly match a physical file RewriteCond %{REQUEST_FILENAME} !-f # and the requested path and file doesn't directly match a physical folder RewriteCond %{REQUEST_FILENAME} !-d # internally rewrite the request to the index.php script RewriteRule .* index.php [L] # ## End - Joomla! core SEF Section. Redirect 301 /index.html /index.php Redirect 301 /services /project Redirect 301 /projects/projects.html /project Redirect 301 /projects/project1.html /project Redirect 301 /projects/project2.html /project Redirect 301 /projects /project Redirect 301 /keypersonnel.html /about-agrin/keystaff Redirect 301 /cooperation.htm /about-agrin/intcoop Redirect 301 /member.html /about-agrin/memberships Redirect 301 /contact.html /contacts Redirect 301 /hr.htm /jobs Redirect 301 /index.php/404 /index.php

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• Setting up your project

  - by ssoolsma

  Before any coding we first make sure that the project is setup correctly. (Please note, that this blog is all about how I do it, and incase i forget, i can return here and read how i used to do it. Maybe you come up with some idea’s for yourself too.) In these series we will create a minigolf scoring cart. Please note that we eventually create a fully functional application which you cannot use unless you pay me alot of money! (And i mean alot!)   1. Download and install the appropriate tools. Download the following: - TestDriven.Net (free version on the bottom of the download page) - nUnit TestDriven is a visual studio plugin for many unittest frameworks, which allows you to run  / test code very easily with a right click –> run test. nUnit is the test framework of choice, it works seamless with TestDriven.   2. Create your project Fire up visual studio and create your DataAccess project:  MidgetWidget.DataAccess is it’s name. (I choose MidgetWidget as name for the solution). Also, make sure that the MidgetWidget.DataAccess project is a c# ClassLibary Hit OK to create the solution. (in the above example the checkbox Create directory for solution is checked, because i’m pointing the location to the root of c:\development where i want MidgetWidget to be created.   3. Setup the database. You should have thought about a database when you reach this point. Let’s assume that you’ve created a database as followed: Table name: LoginKey Fields: Id (PK), KeyName (uniqueidentifier), StartDate (datetime), EndDate (datetime) Table name:  Party Fields: Id (PK), Key (uniqueidentifier, Created (datetime) Table name:  Person Fields: Id(PK),  PartyId (int), Name (varchar) Tablename: Score Fields: Id (PK), Trackid (int), PersonId (int), Strokes (int) Tablename: Track Fields: Id (PK), Name (varchar) A few things to take note about the database setup. I’ve singularized all tablenames (not “Persons“ but “Person”. This is because in a few minutes, when this is in our code, we refer to the database objects as single rows. We retrieve a single Person not a single “Persons” from the database.   4. Create the entity framework In your solution tree create a new folder and call it “DataModel”. Inside this folder: Add new item –> and choose ADO.NET Entity Data Model. Name it “Entities.edmx” and hit  “Add”. Once the edmx is added, open it (double click) and right click the white area and choose “Update model from database…". Now, point it to your database (i include sensitive data in the connectionstring) and select all the tables. After that hit “Finish” and let the entity framework do it’s code generation. Et Voila, after a few seconds you have set up your entity model. Next post we will start building the data-access! I’m off to the beach.

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• Problem with sprite direction and rotation

  - by user2236165

  I have a sprite called Tool that moves with a speed represented as a float and in a direction represented as a Vector2. When I click the mouse on the screen the sprite change its direction and starts to move towards the mouseclick. In addition to that I rotate the sprite so that it is facing in the direction it is heading. However, when I add a camera that is suppose to follow the sprite so that the sprite is always centered on the screen, the sprite won't move in the given direction and the rotation isn't accurate anymore. This only happens when I add the Camera.View in the spriteBatch.Begin(). I was hoping anyone could maybe shed a light on what I am missing in my code, that would be highly appreciated. Here is the camera class i use: public class Camera { private const float zoomUpperLimit = 1.5f; private const float zoomLowerLimit = 0.1f; private float _zoom; private Vector2 _pos; private int ViewportWidth, ViewportHeight; #region Properties public float Zoom { get { return _zoom; } set { _zoom = value; if (_zoom < zoomLowerLimit) _zoom = zoomLowerLimit; if (_zoom > zoomUpperLimit) _zoom = zoomUpperLimit; } } public Rectangle Viewport { get { int width = (int)((ViewportWidth / _zoom)); int height = (int)((ViewportHeight / _zoom)); return new Rectangle((int)(_pos.X - width / 2), (int)(_pos.Y - height / 2), width, height); } } public void Move(Vector2 amount) { _pos += amount; } public Vector2 Position { get { return _pos; } set { _pos = value; } } public Matrix View { get { return Matrix.CreateTranslation(new Vector3(-_pos.X, -_pos.Y, 0)) * Matrix.CreateScale(new Vector3(Zoom, Zoom, 1)) * Matrix.CreateTranslation(new Vector3(ViewportWidth * 0.5f, ViewportHeight * 0.5f, 0)); } } #endregion public Camera(Viewport viewport, float initialZoom) { _zoom = initialZoom; _pos = Vector2.Zero; ViewportWidth = viewport.Width; ViewportHeight = viewport.Height; } } And here is my Update and Draw-method: protected override void Update (GameTime gameTime) { float elapsed = (float)gameTime.ElapsedGameTime.TotalSeconds; TouchCollection touchCollection = TouchPanel.GetState (); foreach (TouchLocation tl in touchCollection) { if (tl.State == TouchLocationState.Pressed || tl.State == TouchLocationState.Moved) { //direction the tool shall move towards direction = touchCollection [0].Position - toolPos; if (direction != Vector2.Zero) { direction.Normalize (); } //change the direction the tool is moving and find the rotationangle the texture must rotate to point in given direction toolPos += (direction * speed * elapsed); RotationAngle = (float)Math.Atan2 (direction.Y, direction.X); } } if (direction != Vector2.Zero) { direction.Normalize (); } //move tool in given direction toolPos += (direction * speed * elapsed); //change cameracentre to the tools position Camera.Position = toolPos; base.Update (gameTime); } protected override void Draw (GameTime gameTime) { graphics.GraphicsDevice.Clear (Color.Blue); spriteBatch.Begin (SpriteSortMode.BackToFront, BlendState.AlphaBlend, null, null, null, null, Camera.View); spriteBatch.Draw (tool, new Vector2 (toolPos.X, toolPos.Y), null, Color.White, RotationAngle, originOfToolTexture, 1, SpriteEffects.None, 1); spriteBatch.End (); base.Draw (gameTime); }

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• XNA WP7 Texture memory and ContentManager

  - by jlongstreet

  I'm trying to get my WP7 XNA game's memory under control and under the 90MB limit for submission. One target I identified was UI textures, especially fullscreen ones, that would never get unloaded. So I moved UI texture loads to their own ContentManager so I can unload them. However, this doesn't seem to affect the value of Microsoft.Phone.Info.DeviceExtendedProperties.GetValue("ApplicationCurrentMemoryUsage"), so it doesn't look like the memory is actually being released. Example: splash screens. In Game.LoadContent(): Application.Instance.SetContentManager("UI"); // set the current content manager for (int i = 0; i < mSplashTextures.Length; ++i) { // load the splash textures mSplashTextures[i] = Application.Instance.Content.Load<Texture2D>(msSplashTextureNames[i]); } // set the content manager back to the global one Application.Instance.SetContentManager("Global"); When the initial load is done and the title screen starts, I do: Application.Instance.GetContentManager("UI").Unload(); The three textures take about 6.5 MB of memory. Before unloading the UI ContentManager, I see that ApplicationCurrentMemoryUsage is at 34.29 MB. After unloading the ContentManager (and doing a full GC.Collect()), it's still at 34.29 MB. But after that, I load another fullscreen texture (for the title screen background) and memory usage still doesn't change. Could it be keeping the memory for these textures allocated and reusing it? edit: very simple test: protected override void LoadContent() { // Create a new SpriteBatch, which can be used to draw textures. spriteBatch = new SpriteBatch(GraphicsDevice); PrintMemUsage("Before texture load: "); // TODO: use this.Content to load your game content here red = this.Content.Load<Texture2D>("Untitled"); PrintMemUsage("After texture load: "); } private void PrintMemUsage(string tag) { Debug.WriteLine(tag + Microsoft.Phone.Info.DeviceExtendedProperties.GetValue("ApplicationCurrentMemoryUsage")); } protected override void Update(GameTime gameTime) { // Allows the game to exit if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed) this.Exit(); // TODO: Add your update logic here if (count++ == 100) { GC.Collect(); GC.WaitForPendingFinalizers(); PrintMemUsage("Before CM unload: "); this.Content.Dispose(); GC.Collect(); GC.WaitForPendingFinalizers(); PrintMemUsage("After CM unload: "); red = null; spriteBatch.Dispose(); GC.Collect(); GC.WaitForPendingFinalizers(); PrintMemUsage("After SpriteBatch Dispose(): "); } base.Update(gameTime); } protected override void Draw(GameTime gameTime) { GraphicsDevice.Clear(Color.CornflowerBlue); // TODO: Add your drawing code here if (red != null) { spriteBatch.Begin(); spriteBatch.Draw(red, new Vector2(0,0), Color.White); spriteBatch.End(); } base.Draw(gameTime); } This prints something like (it changes every time): Before texture load: 7532544 After texture load: 10727424 Before CM unload: 9875456 After CM unload: 9953280 After SpriteBatch Dispose(): 9953280

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• Understanding the Value of SOA

  - by Mala Narasimharajan

  Written By: Debra Lilley, ACE Director, Fusion Applications Again I want to talk from my area of expertise of Fusion Applications and talk about their design fundamentals. If you look at the table below and start at the bottom Oracle have defined all of the business objects e.g. accounts, people, customers, invoices etc. used by Fusion Applications; each of these objects contain all of the information required and can be expanded if necessary.  That Oracle have created for each of these business objects every action that is needed for the applications e.g. all the actions to create a new customer, checking to see if it exists, credit checking with D&B (Dun & Bradstreet < http://www.dnb.co.uk/> ) , creating the record, notifying those required etc. Each of these actions is a stand-alone web service. Again you can create a new actions or subscribe to an external provided web service e.g. the D&B check. The diagram also shows that all of development of Fusion Applications is from their Fusion Middleware offerings. Then the Intelligent Business Process is the order in which you run these actions, this is Service Orientated Architecture, SOA. Not only is SOA used to orchestrate actions within Fusion Applications it is also used in the integration of Fusion Applications with the rest of the Oracle stable of applications such as EBS, PeopleSoft, JDE and Siebel. The other applications are written with propriety development tools so how do they work with SOA? It’s a very simple answer, with the introduction of the Oracle SOA platform each process within these applications was made available to be called as a web service. I won’t go into technically how that is done but what’s known as a wrapper to allow each of them to act in this way was added. Finally at the top of the diagram are the questions that each Fusion Application process must answer, and this is the ‘special’ sauce that makes them so good, the User Experience, but that is a topic for another day, or you can read about it in my blog http://debrasoracle.blogspot.co.uk/2014/04/going-on-record-about-fusion-apps-cloud.html or Oracle’s own UX blog https://blogs.oracle.com/usableapps/ The concept behind AppAdvantage is not new the idea that Oracle technology can add value to your Oracle applications investments is pretty fundamental. Nishit Rao who is in AppAdvantage team provided myself and other ACE Directors with demo kits so that we could demonstrate SOA running with the applications. The example I learnt to build was that of the EBS inventory open interface. The simple concept is that request records can be added to a table and an import run that creates these as transactions in inventory. What’s SOA allows you to do is to add to the table from any source and then run this process automatically whereas traditionally you had to run the process at regular intervals because you didn’t know if the table was empty or not. This may just sound like a different way of doing the same thing but if the process is critical for your business then the interval was very small and the process run potentially many times unnecessarily. Using SOA it only happened when necessary without any delay. So in my post today I’ve talked about how SOA is used with Fusion Applications and in the linking with more traditional applications but that is only the tip of the iceberg of potential, your applications are just part of your IT systems and SOA can orchestrate your data across all of them; the beauty of open standards.  Debra Lilley, Fusion Champion, UKOUG Board Member, Fusion User Experience Advocate and ACE Director.  Lilley has 18 years experience with Oracle Applications, with E Business Suite since 9.4.1, moving to Business Intelligence Team Lead and Oracle Alliance Director. She has spoken at over 100 conferences worldwide and posts at debrasoraclethoughts

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• Javascript Inheritance Part 2

  - by PhubarBaz

  A while back I wrote about Javascript inheritance, trying to figure out the best and easiest way to do it (http://geekswithblogs.net/PhubarBaz/archive/2010/07/08/javascript-inheritance.aspx). That was 2 years ago and I've learned a lot since then. But only recently have I decided to just leave classical inheritance behind and embrace prototypal inheritance. For most of us, we were trained in classical inheritance, using class hierarchies in a typed language. Unfortunately Javascript doesn't follow that model. It is both classless and typeless, which is hard to fathom for someone who's been using classes the last 20 years. For the last two or three years since I've got into Javascript I've been trying to find the best way to force it into the class model without much success. It's clunky and verbose and hard to understand. I think my biggest problem was that it felt so wrong to add or change object members at run time. Every time I did it I felt like I needed a shower. That's the 20 years of classical inheritance in me. Finally I decided to embrace change and do something different. I decided to use the factory pattern to build objects instead of trying to use inheritance. Javascript was made for the factory pattern because of the way you can construct objects at runtime. In the factory pattern you have a factory function that you call and tell it to give you a certain type of object back. The factory function takes care of constructing the object to your specification. Here's an example. Say we want to have some shape objects and they have common attributes like id and area that we want to depend on in other parts of your application. So first thing to do is create a factory object and give it a factory method to create an abstract shape object. The factory method builds the object then returns it. var shapeFactory = { getShape: function(id){ var shape = { id: id, area: function() { throw "Not implemented"; } }; return shape; }}; Now we can add another factory method to get a rectangle. It calls the getShape() method first and then adds an implementation to it. getRectangle: function(id, width, height){ var rect = this.getShape(id); rect.width = width; rect.height = height; rect.area = function() { return this.width * this.height; }; return rect;} That's pretty simple right? No worrying about hooking up prototypes and calling base constructors or any of that crap I used to do. Now let's create a factory method to get a cuboid (rectangular cube). The cuboid object will extend the rectangle object. To get the area we will call into the base object's area method and then multiply that by the depth. getCuboid: function(id, width, height, depth){ var cuboid = this.getRectangle(id, width, height); cuboid.depth = depth; var baseArea = cuboid.area; cuboid.area = function() { var a = baseArea.call(this); return a * this.depth; } return cuboid;} See how we called the area method in the base object? First we save it off in a variable then we implement our own area method and use call() to call the base function. For me this is a lot cleaner and easier than trying to emulate class hierarchies in Javascript.

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• How to be Agile when new work keeps affecting completed work?

  - by jdln

  The project I'm working on is to re-skin an existing website. The functionally will stay the same, its just the styles that are changing. The HTML is not changing, I'm only modifying the CSS files. The site is pretty complex. There are dozens of pages. Users can be logged in and have a number of different roles. Depending on their role the content of the page and what pages they are allowed to see varys. We're using GIT and Github. I'm trying to write CSS that works as components. So when the same form elements, headings, etc appear on multiple pages they are already styled and are consistent. Most of time this is working well. Sadly the format and class names in the HTML are at times messy and unpredictable. When I fix something on one page it can break another. The job is also harder as no one knows exactly all the variations that are possible due to the user roles. As such I'm continuously finding new variations as I go along. I'm making headway by putting a lot of comments in my CSS. If I need to remove a CSS rule Ill comment it out so I can still see it with the chrome dev tools, and ill put a comment in the CSS saying why I removed it and for what page this was done. This means that if on another page I'm about to add add the rule to fix a different problem, there is more of a chance I will see how this would break the first page. This allows me to either find a different solution that will work for both pages, or I can make the override page specific. This has been working quite well for me. If I had complete free reign and the only deadline was to finish the project by the end then this method would be fine. However my manager is trying to mitigate risk by breaking the work into areas to be completed per sprint. This is counter to how I have been approaching things as something like my typography styles will affect all other pages on the site. The other issue is that the different stakeholders want to sign off each section as I go along. However once I've finished a section it may change if I change CSS that affects it and also affects a new section I'm working on. I've asked that the stakeholders have a quick unofficial sign off in stages (eg per sprint), and have the final official sign off at the end of the project, but this is being met with resistance. I do understand why it would be higher risk to do this, but the only way to guarantee that a signed off section will not change is to make ALL future changes page specific. In addition to this I'm being told that all work that I push to the Git repo should be ready to go live, and as such should not contain any code comments. This is risky for me as I wont know until I've finished the site if I will ever benefit from these comments or not. Has anyone else been in a similar situation and managed to find a compromise that worked for my development approach and also the desires of management and stakeholders to have a more Agile approach? A more Agile workflow works great when you can break the work into components and know that once something is done it wont be affected by future work. However the nature of this project makes this hard to achieve.

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• A programmer who doesn't get to program - where to turn? [closed]

  - by Just an Anon

  I'm in my mid 20's, and have been working as a full time programmer / developer for the last ~6 years, with several years of part-time freelancing before this, and three straight years of freelancing in the middle of this short career. I work mostly with PHP and the Drupal framework. By and large, I focus on programming custom pieces of functionality; these, of course, vary greatly from project to project. I've got years of solid experience with OOP (have done some Java & C# years ago, too) including intensive experience with front-end development, and even some design work. I've lead small teams (2-4 people) of developers. And of course, given the large amount of freelancing, I've got decent project- & client-management skills. My problem is staying motivated at any place of employment. In the time mentioned I've worked (full-time) at six local companies. The longest I've stayed at any company was just over a year. I find that I'll get hired and be very excited and motivated for the first few months, but the work quickly gets "stale." By that I mean that the interesting components (ie. the programming) get done, and the rest of the work turns into boring cleanup (move a button, add text, change colours, add a field). I don't get challenged, and I don't feel like I'm learning anything new. This happens repeatedly time and time again, and I always end up leaving for either a new opportunity, or to freelance. I'm wondering if perhaps I've painted myself into a corner with the rather niche work market (although with very high demand and good compensation) and need to explore other career choices. Another possibility is that I may be choosing the wrong places of employment, mostly small agencies, and need to look into working for a larger, more established firm. I find programming, writing code, and architecting solutions very rewarding. When I'm working on an interesting problem I lose all sense of time and 14-16 hours can fly by like minutes. I get the same exciting feeling when I'm doing high-level planning of a complex system, breaking up the work and figuring out how everything will tie-in together. I absolutely hate doing small, "stupid" changes that pose no challenge, yet seem to make up more and more of my work. I want to find a workplace where I will get to work on such tasks, be challenged, and improve in all areas of product development. This maybe a programming job, management, architecture of desktop apps, or may be managing a taco stand on a beach in Mexico - I don't know, and I need some advice and real-world feedback. What are some job areas worth exploring? The requirements are fairly simple: working with computers interacting with others challenging decent pay (I'm making just short of 90k / year with a month of vacation & some benefits, and would like to stay in this range, but am willing to take a temporary cut in pay for a more interesting position) Any advice would be much appreciated!

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• a friendly elaboratation on how iceweasel misses as recent request was discovered in post tut

  - by v3x3n

  I would like to specify what you asked about in how iceweasel misses on in hopes that you are interested in considering the answer to be valid considering the package should run efficient to a novice user especially when getting a first impression on a new software, browser, or package they are given by default. First let me say that I am very grateful for all debian has and continues to do for its user base and I am not complaining, only hoping that in mentioning such it will eventually aid in improving the disappointing experience iceweasel gave me in multiple ways right from the start of using it. I am sure tremendous amounts of hard work went into making it work as well as it does, and tremendous effort continues to go into IW like the rest of the package and distros such as this... Having said that, I do aim to keep my examples simple as possible but also explained in enough detail as to not leave out important info to get a full idea of my issue... (Thanks for understanding if I sound novice to debian, I am but continue to learn and advance by trial and error each day, and of course the wonderful help from all the great minds available here and there)... Well, my bone to pick (unfortunately as I disdain being a complainer when so much has been done for us, the end user) with IW is mainly 3 immediately noticed problems in offering me a smooth test drive (completely normal browsing conduct of your average user, I should indicate) as soon as I started out a task using IW (heading directly to google images and searched for a few web sized images, then saved a few (no more than 800 to 900 in dimensions, typically a normal procedure I would imagine) I experienced a horrendous reoccurring freeze and lag time that almost left me to kill the process more than once on each attempt and continued to compound so that by a few attempts later, even 1 single image save locked up the entire browser, ultimately giving up on my procedure in its simplicity with a bit of aggravation, if there was something I had done wrong on my end pre-attempt or during installation. Secondly, visiting video player sites in this case youtube will not allow for any video feed to play whatsoever and again, experienced a slight freezing that eventually dissipated as long as I didn't attempt to press play or reload another video trial... Very annoying and possibly related to my first issue (which could rely on my own lack of knowledge in setup config, but that troubles me if so).... Lastly as another user has stated already, in which brought you to ask them what exactly seemed to be the problem in the first place is also my final straw that broke the weasel's back, leading me here to find a solution to a updated version of firefox... being that iceweasel (an apparent build of firefox 17.x.x) leaving the user to find themselves out of luck when installing their favorite or much useful add-ons or plugins that aid their task or normal usage online.... As the other user clearly stated... there is almost zero options and barely any luck to find compatible plugins with such an outdated version still being used... I can only imagine if as a novoice or standard user to linux... and beginner to debian (which I am all for btw!) if I am discovering major conductivity issues which hinder normal user conduct right off the bat... that there is probably a bundle or more of security vulnerabilities that would unravel to me if I continued to give mr Hommey's package any further attention, or interest in continuing to use... This is a deal breaker on any account, unless all 3 of these issues stated are due to a very n00berish setting or lack thereof (which if that is the case, such was not properly stated for beginner in any place available by following installation tutorials such as LVM installers, which I felt lacked a clear understanding to someone who is trying to learn why and how, rather than, a fix to a potentially broken out of box installation... I really think that is irrelevant in any case however, as there is much step by step support regarding that kind of thing, just saying... its very challenging, along side a job to keep deadlines on, and the need to learn a better and more costomizible system, that was not as popularized when I became a dev via windows (OK OK I know thats a huge mistake and now I am way off original topic but anyway) Thanks very much for taking the time to read over this, and I hope it honestly gives you a few good and valid reasons for users wanting and seeking a way to get around iceweasel altogether... Finally, if I am missing something vital that renders all I've stated invalid or useless, please feel free to shove that elephant in the room my direction! Thanks for all you do, as I am sure it is very useful and dedicated, being you are a debian maintainer, and super user! Much love for intelligence, freedom and sharing the secrets of the web! May it remain unregulated and a good place to grow and learn for generations to come! Stay true! Take care now! -v3x (v3x @ gmx .com)

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• Serializing object with no namespaces using DataContractSerializer

  - by Yurik

  How do I remove XML namespaces from an object's XML representation serialized using DataContractSerializer? That object needs to be serialized to a very simple output XML. Latest & greatest - using .Net 4 beta 2 The object will never need to be deserialized. XML should not have any xmlns:... namespace refs Any subtypes of Exception and ISubObject need to be supported. It will be very difficult to change the original object. Object: [Serializable] class MyObj { string str; Exception ex; ISubObject subobj; } Need to serialize into: <xml> <str>...</str> <ex i:nil="true" /> <subobj i:type="Abc"> <AbcProp1>...</AbcProp1> <AbcProp2>...</AbcProp2> </subobj> </xml> I used this code: private static string ObjectToXmlString(object obj) { if (obj == null) throw new ArgumentNullException("obj"); var serializer = new DataContractSerializer( obj.GetType(), null, Int32.MaxValue, false, false, null, new AllowAllContractResolver()); var sb = new StringBuilder(); using (var xw = XmlWriter.Create(sb, new XmlWriterSettings { OmitXmlDeclaration = true, NamespaceHandling = NamespaceHandling.OmitDuplicates, Indent = true })) { serializer.WriteObject(xw, obj); xw.Flush(); return sb.ToString(); } } From this article I adopted a DataContractResolver so that no subtypes have to be declared: public class AllowAllContractResolver : DataContractResolver { public override bool TryResolveType(Type dataContractType, Type declaredType, DataContractResolver knownTypeResolver, out XmlDictionaryString typeName, out XmlDictionaryString typeNamespace) { if (!knownTypeResolver.TryResolveType(dataContractType, declaredType, null, out typeName, out typeNamespace)) { var dictionary = new XmlDictionary(); typeName = dictionary.Add(dataContractType.FullName); typeNamespace = dictionary.Add(dataContractType.Assembly.FullName); } return true; } public override Type ResolveName(string typeName, string typeNamespace, Type declaredType, DataContractResolver knownTypeResolver) { return knownTypeResolver.ResolveName(typeName, typeNamespace, declaredType, null) ?? Type.GetType(typeName + ", " + typeNamespace); } }

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• The data reader returned by the store data provider does not have enough columns

  - by molgan

  Hello I get the following error when I try to execute a stored procedure: "The data reader returned by the store data provider does not have enough columns" When I in the sql-manager execute it like this: DECLARE @return_value int, @EndDate datetime EXEC @return_value = [dbo].[GetSomeDate] @SomeID = 91, @EndDate = @EndDate OUTPUT SELECT @EndDate as N'@EndDate' SELECT 'Return Value' = @return_value GO It returns the value properly.... @SomeDate = '2010-03-24 09:00' And in my app I have: if (_entities.Connection.State == System.Data.ConnectionState.Closed) _entities.Connection.Open(); using (EntityCommand c = new EntityCommand("MyAppEntities.GetSomeDate", (EntityConnection)this._entities.Connection)) { c.CommandType = System.Data.CommandType.StoredProcedure; EntityParameter paramSomeID = new EntityParameter("SomeID", System.Data.DbType.Int32); paramSomeID.Direction = System.Data.ParameterDirection.Input; paramSomeID.Value = someID; c.Parameters.Add(paramSomeID); EntityParameter paramSomeDate = new EntityParameter("SomeDate", System.Data.DbType.DateTime); SomeDate.Direction = System.Data.ParameterDirection.Output; c.Parameters.Add(paramSomeDate); int retval = c.ExecuteNonQuery(); return (DateTime?)c.Parameters["SomeDate"].Value; Why does it complain about columns? I googled on error and someone said something about removing RETURN in sp, but I dont have any RETURN there. last like is like SELECT @SomeDate = D.SomeDate FROM .... /M

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• Reporting services 2008: ReportExecution2005.asmx does not exist

  - by Shimrod

  Hi everyone, I'm trying to generate a report directly from the code (to send it by mail after). I make this in a windows service. So here is what I'm doing: Dim rview As New ReportViewer() Dim reportServerAddress As String = "http://server/Reports_client" rview.ServerReport.ReportServerUrl = New Uri(reportServerAddress) Dim paramList As New List(Of Microsoft.Reporting.WinForms.ReportParameter) paramList.Add(New Microsoft.Reporting.WinForms.ReportParameter("param1", t.Value)) paramList.Add(New Microsoft.Reporting.WinForms.ReportParameter("CurrentDate", Date.Now)) Dim reportsDirectory As String = "AppName.Reports" Dim reportPath As String = String.Format("/{0}/{1}", reportsDirectory, reportName) rview.ServerReport.ReportPath = reportPath rview.ServerReport.SetParameters(paramList) 'This is where I get the exception Dim mimeType, encoding, extension, deviceInfo As String Dim streamids As String() Dim warnings As Microsoft.Reporting.WinForms.Warning() deviceInfo = "<DeviceInfo><SimplePageHeaders>True</SimplePageHeaders></DeviceInfo>" Dim format As String = "PDF" Dim bytes As Byte() = rview.ServerReport.Render(format, deviceInfo, mimeType, encoding, extension, streamids, warnings) When debugging this code, I can see it throws a MissingEndpointException where I make the SetParameters(paramList) with this message: The attempt to connect to the report server failed. Check your connection information and that the report server is a compatible version. Looking in the server's log file, I can see this: ui!ReportManager_0-8!878!06/02/2010-11:34:36:: Unhandled exception: System.Web.HttpException: The file '/Reports_client/ReportExecution2005.asmx' does not exist. at System.Web.UI.Util.CheckVirtualFileExists(VirtualPath virtualPath) at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) at System.Web.Compilation.BuildManager.GetVPathBuildResult(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) at System.Web.Compilation.BuildManager.GetVPathBuildResult(HttpContext context, VirtualPath virtualPath) at System.Web.UI.WebServiceParser.GetCompiledType(String inputFile, HttpContext context) at System.Web.Services.Protocols.WebServiceHandlerFactory.GetHandler(HttpContext context, String verb, String url, String filePath) at System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig) at System.Web.HttpApplication.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) I didn't find any resource on the web that fits my problem. Does anyone have a clue ? I'm able to view the reports from a web application, so I'm sure the server is running. Thanks in advance.

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• GMLib Could not complete the operation due to error 80020101

  - by Pierrie

  I get this error "Could not complete the operation due to error 80020101." at random times when displaying a map with a marker on it. I use Delphi 2007 and GMLib [1.2.0 Final]. I have read up on the issue and some suggestions was that the problem is due to commenting or bad syntax in java code, and it was suggested that i take out all the commenting and check for errors in the java code. This i did, i recompiled and reinstalled GMLib after modifying the map.html file. I stripped it of all commenting and parsed it through ie for faults but found none, as expected. But the problem still occurs. Here is a sample of my code to show the map and add the marker : Var newmarker : TMarker; begin newmarker := GMMarker1.Add(); newmarker.Position.Lat := MarkersToPaint[i].Latitude; newmarker.Position.Lng := MarkersToPaint[i].Longitude; newmarker.Visible := True; newmarker.Title := MarkersToPaint[i].Title; GMMap1.RequiredProp.Center.Lat := midlat; GMMap1.RequiredProp.Center.Lng := midlong; GMMap1.RequiredProp.Zoom := 18; GMMarker1.ShowElements; GMMap1.Active := True; Any help in this matter will be greatly appreciated.

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• JQuery getJSON - ajax parseerror

  - by JW

  I've tried to parse the following json response with both the JQuery getJSON and ajax: [{"iId":"1","heading":"Management Services","body":"<h1>Program Overview</h1><h1>January 29, 2009</h1>"}] I've also tried it escaping the "/" characters like this: [{"iId":"1","heading":"Management Services","body":"<h1>Program Overview <\/h1><h1>January 29, 2009<\/h1>"}] When I use the getJSON it dose not execute the callback. So, I tried it with JQuery ajax as follows: $.ajax({ url: jURL, contentType: "application/json; charset=utf-8", dataType: "json", beforeSend: function(x) { if(x && x.overrideMimeType) { x.overrideMimeType("application/j-son;charset=UTF-8"); } }, success: function(data){ wId = data.iId; $("#txtHeading").val(data.heading); $("#txtBody").val(data.body); $("#add").slideUp("slow"); $("#edit").slideDown("slow"); },//success error: function (XMLHttpRequest, textStatus, errorThrown) { alert("XMLHttpRequest="+XMLHttpRequest.responseText+"\ntextStatus="+textStatus+"\nerrorThrown="+errorThrown); } }); The ajax hits the error ans alerts the following: XMLHttpRequest=[{"iId":"1","heading":"Management Services","body":"<h1>Program Overview </h1><h1>January 29, 2009</h1>"}] textStatus=parseerror errorThrown=undefined Then I tried a simple JQuery get call to return the JSON using the following code: $.get(jURL,function(data){ var json = eval("("+data+");"); wId = json.iId; $("#txtHeading").val(json.heading); $("#txtBody").val(json.body); $("#add").slideUp("slow"); $("#edit").slideDown("slow"); }) The .get returns the JSON, but the eval comes up with errors no matter how I've modified the JSON (content-type header, other variations of the format, etc.) What I've come up with is that there seem to be an issue returning the HTML in the JSON and getting it parsed. However, I have hope that I may have missed something that would allow me to get this data via JSON. Does anyone have any ideas?

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• using ILMerge with .NET 4 libraries

  - by Sarah Vessels

  I'm having trouble using ILMerge in my post-build after upgrading from .NET 3.5/Visual Studio 2008 to .NET 4/Visual Studio 2010. I have a Solution with several projects whose target framework is set to ".NET Framework 4". I use the following ILMerge command to merge the individual project DLLs into a single DLL: if not $(ConfigurationName) == Debug if exist "C:\Program Files (x86)\Microsoft\ILMerge\ILMerge.exe" "C:\Program Files (x86)\Microsoft\ILMerge\ILMerge.exe" /lib:"C:\Windows\Microsoft.NET\Framework64\v4.0.30319" /lib:"C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\PublicAssemblies" /keyfile:"$(SolutionDir)$(SolutionName).snk" /targetplatform:v4 /out:"$(SolutionDir)bin\development\$(SolutionName).dll" "$(SolutionDir)Connection\$(OutDir)Connection.dll" ...other project DLLs... /xmldocs If I leave off specifying the location of the .NET 4 framework directory, I get an "Unresolved assembly reference not allowed: System" error from ILMerge. If I leave off specifying the location of the MSTest directory, I get an "Unresolved assembly reference not allowed: Microsoft.VisualStudio.QualityTools.UnitTestFramework" error. The ILMerge command above works and produces a DLL. When I reference that DLL in another .NET 4 C# project, however, and try to use code within it, I get the following warning: The primary reference "MyILMergedDLL" could not be resolved because it has an indirect dependency on the .NET Framework assembly "mscorlib, Version=4.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" which has a higher version "4.0.65535.65535" than the version "4.0.0.0" in the current target framework. If I then remove the /targetplatform:v4 flag and try to use MyILMergedDLL.dll, I get the following error: The type 'System.Xml.Serialization.IXmlSerializable' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. It doesn't seem like I should have to do that. Whoever uses my MyILMergedDLL.dll API should not have to add references to whatever libraries it references. How can I get around this?

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• IE8 losing session cookies in popup windows.

  - by HackedByChinese

  We have an ASP.NET application that uses Forms Auth. When users log in, a session ID cookie and a Forms Auth ticket (stored as a cookie) are generated. These are session cookies, not permanent cookies. It is intentional and desirable that when the browser closes, the user is effectively logged out. Once a user logs in, a new window is popped up using window.open('location here');. The page that is opened is effectively the workspace the user works in throughout the rest of their session. From this page, other pop-ups are also used. Lately, we've had a number of customers (all using latest versions of IE8) complaining that the when they log in, the initial pop-up takes them back to the log in screen rather than their homepage. Alternately, users can sometimes log in, get to the homepage (which again, is in a new pop up window), and it all seems fine, until any additional pop-ups are created, where it starts redirecting them to the log in screen again. In attempting to troubleshoot the issue, I've used good old Fiddler. When the problem starts manifesting, I've noticed that the browser is not sending up the ASP.NET session ID session cookie OR the Forms Auth ticket session cookie, even though the response to the log in POST clearly pushes down those cookies. What's more strange is if I CTRL+N to open a new window from the popped-up window that is missing the session cookies, then manually type in the URL to the home page, those cookies magically appear again. However, subsequent window.open(); calls will continue to be broken, not sending the session cookies and taking the user to the log in screen. It's important to note that sometimes, for seemingly no good reason, those same users can suddenly log in and work normally for a while, then it goes back to broken. Now, I've ensured that there are no browser add-ons, plug-ins, toolbars, etc. are running. I've added our site as a trusted site and dropped the security settings to Low, I've modified the Cookie Privacy policy to "accept all" and even disabled automatic policy settings, manually forcing it to accept everything and include session cookies. Nothing appears to affect it. Also note the web application resides on a single server. There is no load balancing, web gardens, server farms, clusters, etc. The server does reside behind an ISA server, but other than that it's pretty straight forward. I've been searching around for days and haven't found anything actionable. Heck, sometimes I can't even reproduce it reliably. I have found a few references to people having this same problem, but they seem to be referencing an issue that was allegedly fixed in a beta or RC release (example: http://stackoverflow.com/questions/179260/ie8-loses-cookies-when-opening-a-new-window-after-a-redirect). These are release versions of IE, with up-to-date patches. I'm aware that I can try to set permanent cookies instead of session cookies. However, this has drastic security implications for our application. Update It seems that the problem automagically goes away when the user is added as a Local Administrator on the machine. Only time will tell if this change permanently (and positively) affects this problem. Time to bust out ProcMon and see if there is a resource access problem.

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• Null Validation on EditText box in Alert Dialog - Android

  - by LordSnoutimus

  Hi, I am trying to add some text validation to an edit text field located within an alert dialog box. It prompts a user to enter in a name. I want to add some validation so that if what they have entered is blank or null, it does not do anything apart from creating a Toast saying error. So far I have: AlertDialog.Builder alert = new AlertDialog.Builder(this); alert.setTitle("Record New Track"); alert.setMessage("Please Name Your Track:"); // Set an EditText view to get user input final EditText trackName = new EditText(this); alert.setView(trackName); alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { String textString = trackName.getText().toString(); // Converts the value of getText to a string. if (textString != null && textString.trim().length() ==0) { Context context = getApplicationContext(); CharSequence error = "Please enter a track name" + textString; int duration = Toast.LENGTH_LONG; Toast toast = Toast.makeText(context, error, duration); toast.show(); } else { SQLiteDatabase db = waypoints.getWritableDatabase(); ContentValues trackvalues = new ContentValues(); trackvalues.put(TRACK_NAME, textString); trackvalues.put(TRACK_START_TIME,tracktimeidentifier ); insertid=db.insertOrThrow(TRACK_TABLE_NAME, null, trackvalues); } But this just closes the Alert Dialog and then displays the Toast. I want the Alert Dialog to still be on the screen. Thanks

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• C#, Powershell - Microsoft.Exchange.Management.PowerShell.Admin

  - by Svein Erik

  I'm having troubles using the Microsoft.Exchange.Management.PowerShell.Admin on a server. The server is not the one running Exchange 2007, it's a remote server (in the same zone). I can't figure out how to add the Snapin for Powershell - Microsoft.Exchange.Management.PowerShell.Admin. Is it possible to just get the dll file from the Exchange 2007 server, and copy it to the server where my code is running? Can someone please explain what I need to do to get my code running? The exception that i'm getting now is: "No Windows PowerShell Snap-ins are available for version 1". This is the code that generates the error: public void CreateMailBox(User user) { //Create a runspace for your cmdlets to run and include the Exchange Management SnapIn... RunspaceConfiguration runspaceConf = RunspaceConfiguration.Create(); PSSnapInException PSException = null; PSSnapInInfo info = runspaceConf.AddPSSnapIn("Microsoft.Exchange.Management.PowerShell.Admin", out PSException); Runspace runspace = RunspaceFactory.CreateRunspace(runspaceConf); runspace.Open(); Pipeline pipeline = runspace.CreatePipeline(); Command command = new Command("New-Mailbox"); command.Parameters.Add("Name", user.UserName); .... The error is coming on the line with PSSnapInfo info = runspaceConf..... I'm using .NET 3.5

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• Making TeamCity integrate the Subversion build number into the assembly version.

  - by Lasse V. Karlsen

  I want to adjust the output from my TeamCity build configuration of my class library so that the produced dll files have the following version number: 3.5.0.x, where x is the subversion revision number that TeamCity has picked up. I've found that I can use the BUILD_NUMBER environment variable to get x, but unfortunately I don't understand what else I need to do. The "tutorials" I find all say "You just add this to the script", but they don't say which script, and "this" is usually referring to the AssemblyInfo task from the MSBuild Community Extensions. Do I need to build a custom MSBuild script somehow to use this? Is the "script" the same as either the solution file or the C# project file? I don't know much about the MSBuild process at all, except that I can pass a solution file directly to MSBuild, but what I need to add to "the script" is XML, and the solution file decidedly does not look like XML. So, can anyone point me to a step-by-step guide on how to make this work? This is what I ended up with: Install the MSBuild Community Tasks Edit the .csproj file of my core class library, and change the bottom so that it reads: <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" /> <Import Project="$(MSBuildExtensionsPath)\MSBuildCommunityTasks\MSBuild.Community.Tasks.Targets" /> <Target Name="BeforeBuild"> <AssemblyInfo Condition=" '$(BUILD_NUMBER)' != '' " CodeLanguage="CS" OutputFile="$(MSBuildProjectDirectory)\..\GlobalInfo.cs" AssemblyVersion="3.5.0.0" AssemblyFileVersion="$(BUILD_NUMBER)" /> </Target> <Target Name="AfterBuild"> Change all my AssemblyInfo.cs files so that they don't specify either AssemblyVersion or AssemblyFileVersion (in retrospect, I'll look into putting AssemblyVersion back) Added a link to the now global GlobalInfo.cs that is located just outside all the project Make sure this file is built once, so that I have a default file in source control This will now update GlobalInfo.cs only if the environment variable BUILD_NUMBER is set, which it is when I build through TeamCity. I opted for keeping AssemblyVersion constant, so that references still work, and only update AssemblyFileVersion, so that I can see which build a dll is from.

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• Telerik RadGridView problem

  - by Polaris

  I am using Telerik RadGridView in my project. I want to show image in column. GridViewImageColumn col1 = new GridViewImageColumn(); col1.Width = 100; col1.DataMemberBinding = new Binding("id"); col1.Header = "PhotoByConverter"; col1.DataMemberBinding.Converter = new ThumbnailConverter(); grid.Columns.Add(col1); GridViewImageColumn col2 = new GridViewImageColumn(); col2.Width = 100; col2.DataMemberBinding = new Binding("firstName"); col2.Header = "Person name"; col2.DataMemberBinding.Converter = new ThumbnailConverter(); grid.Columns.Add(col2); Grid.ItemsSource=DataTable; First column not wokrs but second works fine. I use Converter for image shown below public class ThumbnailConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { IEnumerable<thumbNail> result = from n in thumbnails where n.personID == value.ToString() select n; if (result != null && result.First().thumbnail != null) { return result.First().thumbnail.file; } else { return null; } } public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { throw new Exception("The method or operation is not implemented."); } } I found by id thumbnail of person and set it like data for GridViewImageColumn. I checked with Debuger conveter works properly. I can't undesrtand why it doesn't work. Any ideas?

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