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  • Programmatically controlling a Dojo Accordion

    - by prule
    I have a dijit.layout.AccordionContainer on my page which is defined in the html and created when dojo parses the page on load. Then, as the user interacts with the page I use Ajax to retrieve data and programmatically populate the container (removing existing items first). To illustrate my issue simply, here is some code that doesn't work: function doit() { var accordion = dijit.byId("accordionShell"); accordion.getChildren().each(function(item) { accordion.removeChild(item); }); for (i = 1; i < 5; i++) { var d = new dijit.layout.AccordionPane({title:'hello', content:'world'}); accordion.addChild(d); } } This fails, because only the first item in the accordian is visible. I think the others actually exist, but they are not visible so you can't do anything. I've managed to get around it by: Always ensuring there is 1 item in the accordian (so I never remove the first child) Call accordian.layout() after changing the contents So, this code "works" as long as you always want to see the first item, and don't actually expand any but the first one: function doit() { var accordion = dijit.byId("accordionShell"); var i = 0; accordion.getChildren().each(function(item) { if (i > 0) accordion.removeChild(item); i++; }); for (i = 1; i < 5; i++) { var d = new dijit.layout.AccordionPane({title:'hello', content:'world'}); accordion.addChild(d); } accordion.layout(); } I am using Dojo 1.2.0 - Anyone know what I am doing wrong?

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  • Calling a Stored Procedure using C# with XML Datatype

    - by Lakeshore
    I am simply trying to call a store procedure (SQL Server 2008) using C# and passing XMLDocument to a store procedure parameter that takes a SqlDbType.Xml data type. I am getting error: Failed to convert parameter value from a XmlDocument to a String. Below is code sample. How do you pass an XML Document to a store procedure that is expecting an XML datatype? Thanks. XmlDocument doc = new XmlDocument(); //Load the the document with the last book node. XmlTextReader reader = new XmlTextReader(@"C:\temp\" + uploadFileName); reader.Read(); // load reader doc.Load(reader); connection.Open(); SqlCommand cmd = new SqlCommand("UploadXMLDoc", connection); cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.Add("@Year", SqlDbType.Int); cmd.Parameters["@Year"].Value = iYear; cmd.Parameters.Add("@Quarter", SqlDbType.Int); cmd.Parameters["@Quarter"].Value = iQuarter; cmd.Parameters.Add("@CompanyID", SqlDbType.Int); cmd.Parameters["@CompanyID"].Value = iOrganizationID; cmd.Parameters.Add("@FileType", SqlDbType.VarChar); cmd.Parameters["@FileType"].Value = "Replace"; cmd.Parameters.Add("@FileContent", SqlDbType.Xml); cmd.Parameters["@FileContent"].Value = doc; cmd.Parameters.Add("@FileName", SqlDbType.VarChar); cmd.Parameters["@FileName"].Value = uploadFileName; cmd.Parameters.Add("@Description", SqlDbType.VarChar); cmd.Parameters["@Description"].Value = lblDocDesc.Text; cmd.Parameters.Add("@Success", SqlDbType.Bit); cmd.Parameters["@Success"].Value = false; cmd.Parameters.Add("@AddBy", SqlDbType.VarChar); cmd.Parameters["@AddBy"].Value = Page.User.Identity.Name; cmd.ExecuteNonQuery(); connection.Close();

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  • Class Decorators, Inheritence, super(), and maximum recursion

    - by jamstooks
    I'm trying to figure out how to use decorators on subclasses that use super(). Since my class decorator creates another subclass a decorated class seems to prevent the use of super() when it changes the className passed to super(className, self). Below is an example: def class_decorator(cls): class _DecoratedClass(cls): def __init__(self): return super(_DecoratedClass, self).__init__() return _DecoratedClass class BaseClass(object): def __init__(self): print "class: %s" % self.__class__.__name__ def print_class(self): print "class: %s" % self.__class__.__name__ bc = BaseClass().print_class() class SubClass(BaseClass): def print_class(self): super(SubClass, self).print_class() sc = SubClass().print_class() @class_decorator class SubClassAgain(BaseClass): def print_class(self): super(SubClassAgain, self).print_class() sca = SubClassAgain() # sca.print_class() # Uncomment for maximum recursion The output should be: class: BaseClass class: BaseClass class: SubClass class: SubClass class: _DecoratedClass Traceback (most recent call last): File "class_decorator_super.py", line 34, in <module> sca.print_class() File "class_decorator_super.py", line 31, in print_class super(SubClassAgain, self).print_class() ... ... RuntimeError: maximum recursion depth exceeded while calling a Python object Does anyone know of a way to not break a subclass that uses super() when using a decorator? Ideally I'd like to reuse a class from time to time and simply decorate it w/out breaking it.

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  • Average of two strings in alphabetical/lexicographical order

    - by Bemmu
    Suppose you take the strings 'a' and 'z' and list all the strings that come between them in alphabetical order: ['a','b','c' ... 'x','y','z']. Take the midpoint of this list and you find 'm'. So this is kind of like taking an average of those two strings. You could extend it to strings with more than one character, for example the midpoint between 'aa' and 'zz' would be found in the middle of the list ['aa', 'ab', 'ac' ... 'zx', 'zy', 'zz']. Might there be a Python method somewhere that does this? If not, even knowing the name of the algorithm would help. I began making my own routine that simply goes through both strings and finds midpoint of the first differing letter, which seemed to work great in that 'aa' and 'az' midpoint was 'am', but then it fails on 'cat', 'doggie' midpoint which it thinks is 'c'. I tried Googling for "binary search string midpoint" etc. but without knowing the name of what I am trying to do here I had little luck.

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  • Using Mapping Models to migrate between Core Data Object Models

    - by westsider
    I have a fairly simply scheme. Essentially, Run <-- Data (where a Run holds a data, e.g., Temperature, sampled from some sort of sensor). Now, it seems that sensors can have more than one measurement (e.g., Temperature and Humidity). So, a single Run could have multiple data samples. Hence, Run <-- Sample and Sample <-- Data. (And for simplicity I am leaving Run <-- Data in place, for now.) If I create a new mapping model, then things generally work - except that no new Samples are created, no relationships are established between Runs and Samples nor between Samples and Datas. I am trying to get mapping model to migrate my model but even the slightest change to the generated mapping model results in Cocoa error 134110. For example, if I take the "Sample" mapping (which has no Source) and set its Source to 'Run' (so that I can set Sample's inverse relationship 'run' appropriately) then the mapping changes its name to "RunToSample". There are two relationships handled in this mapping: data and run. The data property gets set automatically to FUNCTION($manager, "destinationInstancesForEntityMappingNamed:sourceInstances:" , "DataToData", $source.dataSet) Following this example, I set the run property to FUNCTION($manager, "destinationInstancesForEntityMappingNamed:sourceInstances:" , "RunToRun", $source) Similarly, I set the 'sample' property mapping in RunToRun to FUNCTION($manager, "destinationInstancesForEntityMappingNamed:sourceInstances:" , "RunToSample", $source) and the 'sample' property in DataToData to FUNCTION($manager, "destinationInstancesForEntityMappingNamed:sourceInstances:" , "RunToSample", $source.run) So, what, I wonder, is going wrong? I have tried various permutations, such as leaving the 'inverse' relationships unspecified. But I continue to get the same error (134110) regardless. I imagine that this is a lot easier than it seems and that I am missing some fundamental but minor piece. I have also tried subclassing NSEntityMigrationPolicy and overriding -createDestinationInstancesForSourceInstance: but these efforts have met with much the same results. Thanks in advance for any pointers or (relevant :-) advice.

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  • RESTful WCF Data Service Authentication

    - by Adrian Grigore
    Hi, I'd like to implement a REST api to an existing ASP.NET MVC website. I've managed to set up WCF Data services so that I can browse my data, but now the question is how to handle authentication. Right now the data service is secured via the site's built in forms authentication, and that's ok when accessing the service from AJAX forms. However, It's not ideal for a RESTful api. What I would like as an alternative to forms authentication is for the users to simply embed the user name and password into the url to the web service or as request parameters. For example, if my web service is usually accessible as http://localhost:1234/api.svc I'd like to be able to access it using the url http://localhost:1234/api.svc/{login}/{password} So, my questions are as follows: Is this a sane approach? If yes, how can I implement this? It seems trivial redirecting GET requests so that the login and password are attached as GET parameters. I also know how to inspect the http context and use those parameters to filter the results. But I am not sure if / how the same approach could be applied to POST, PUT and DELETE requests. Thanks, Adrian

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  • Izpack: Creating custom panels

    - by bguiz
    Hi, I am trying to create a custom panel for an IzPack installer. This means that I have to extend IzPanel. However, it appears that if I do this, the extended panel needs to be in the com.izforge.izpack.panels package. Then I found this post, which stipulates that: As such, you must include installer.jar from the lib folder of IzPack in the build path of your custom panel project. Your custom panel /must/ extend com.izforge.izpack.installer.IzPanel. Furthermore, it /must/ reside in the com.izforge.izpack.panels package. On top of it all, your build jar's name /must/ be the same as the unqualified name of your custom panel class. I take issue with the 1st and 4th points. They imply that I have to create an additional JAR file for each custom IzPanel that I create. Also, I would have to modify the IzPack installation by adding these JARs to one of its subdirectories. Is this article outdated (2008) and can it be safely ignored, or is this still true? If not how can I avoid this and simply have the extended IzPanel on the classpath instead? Thank you!

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  • Wrapped WPF Control

    - by Robert
    Hi, I'm trying to create a GUI (WPF) Library where each (custom) control basically wraps an internal (third party) control. Then, I'm manually exposing each property (not all of them, but almost). In XAML the resulting control is pretty straightforward: <my:CustomButton Content="ClickMe" /> And the code behind is quite simple as well: public class CustomButton : Control { private MyThirdPartyButton _button = null; static CustomButton() { DefaultStyleKeyProperty.OverrideMetadata(typeof(CustomButton), new FrameworkPropertyMetadata(typeof(CustomButton))); } public CustomButton() { _button = new MyThirdPartyButton(); this.AddVisualChild(_button); } protected override int VisualChildrenCount { get { return _button == null ? 0 : 1; } } protected override Visual GetVisualChild(int index) { if (_button == null) { throw new ArgumentOutOfRangeException(); } return _button; } #region Property: Content public Object Content { get { return GetValue(ContentProperty); } set { SetValue(ContentProperty, value); } } public static readonly DependencyProperty ContentProperty = DependencyProperty.Register( "Content", typeof(Object), typeof(CustomButton), new FrameworkPropertyMetadata(new PropertyChangedCallback(ChangeContent)) ); private static void ChangeContent(DependencyObject source, DependencyPropertyChangedEventArgs e) { (source as CustomButton).UpdateContent(e.NewValue); } private void UpdateContent(Object sel) { _button.Content = sel; } #endregion } The problem comes after we expose MyThirdPartyButton as a property (in case we don't expose something, we would like to give the programmer the means to use it directly). By simply creating the property, like this: public MyThirdPartyButton InternalControl { get { return _button; } set { if (_button != value) { this.RemoveVisualChild(_button); _button = value; this.AddVisualChild(_button); } } } The resulting XAML would be this: <my:CustomButton> <my:CustomButton.InternalControl> <thirdparty:MyThirdPartyButton Content="ClickMe" /> </my:CustomButton.InternalControl> And what I'm looking for, is something like this: <my:CustomButton> <my:CustomButton.InternalControl Content="ClickMe" /> But (with the code I have) its impossible to add attributes to InternalControl... Any ideas/suggestions? Thanks a lot, -- Robert

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  • jQueryUI selectable: can't apply theme to selected item ("ui-selected" class)

    - by Jeremy
    I am developing an application using jQueryUI. I am also using the Themeroller. I want to have as many of my styles as possible defined using the theme, so that if I need to change some styles, I simply have to create a new custom theme (or download an existing theme). I am trying to use the "selectable" interaction in jQueryUI. It is working as it should - in Firebug I can see the "ui-selected" class being applied to the element that I select. However, there is no visual cue that the item has been selected. I looked in the theme CSS file (jquery-ui-1.8rc3.custom.css, which I downloaded from the Themeroller page), and I see no declaration for the "ui-selected" class. When I downloaded jQueryUI and the theme, I checked every option, including the one for "selectable". How can I make my theme define the "ui-selected" class? Obviously, I could just create my own style declaration, but that solution is not ideal if I ever want to change the theme. I am using jQuery 1.4.2 and jQueryUI 1.8rc3.

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  • Can I use a plaintext diff algorithm for tracking XML changes?

    - by rinogo
    Hi all! Interesting question for you here. I'm working in Flex/AS3 on (for simplicity) an XML editor. I need to provide undo/redo functionality. Of course, one solution is to store the entire source text with each edit. However, to conserve memory, I'd like to store the diffs instead (these diffs will also be used to transmit updates to the server for auto-saving). My question is - can I use a plaintext diff algorithm for tracking these XML changes? My research on the internet indicates that I cannot do so. However, I'm obviously missing something. Plaintext diff provides functionality that is purportedly: diff(text, text') - diffs patch(text, diffs) - text' XML is simply text, so why can't I just use diff() and patch() to transform the text reliably? For example: Let's say that I'm a poet. When I write poetry, I use lots of funky punctuation... You know, like <, /, and . (You might see where I'm going with this...) If I'm writing my poetry in an application that uses diffs to provide undo/redo functionality, does my poetry become garbled when I undo/redo my edits? It's just text! Why does it make a difference to the algorithm? I obviously don't get something here...Thanks for explaining! :) -Rich

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  • Charset and POST request

    - by jriff
    Hi All! I have a Rails 2.3.5 application that is working fine with UTF-8 and international characters. Now I have made some integration to a payment gateway where I POST some data, wait a while and get a POST back. The problem is that when I get that post back the international characters are broken. Instead of "sørensen" I get: "sørensen". If I do an iconv -fISO-8859-1 -tUTF8 it gets correctly converted to the former (I do that from a OS X command prompt). I have examined the POST request with logger.info(request.headers.inspect) in my controller and I can see that no charset parameter is given. As far as I can see the POST from the gateway must be UTF8 since one character (ø) gets translated to two (ø). So why does Rails think that the POST is ISO-8859-1? I know that one solution is to simply convert the params-hash with Iconv in the controller but I would like to know what is happening. Thanks in advance. Regards, Jacob

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  • UIView Animation animates position but not width

    - by Aaron Vegh
    Hi there, I'm trying to transform a UISearchBar, like in Mobile Safari: touch in the search field and it grows while the location field shrinks. My current animation to alter the width and position of the search field only animates the position: just before it slides to the right place, it simply snaps out to the right width. Here's my code: [UIView beginAnimations:@"searchGrowUp" context:nil]; [UIView setAnimationCurve:UIViewAnimationCurveEaseIn]; [UIView setAnimationDuration:0.5f]; [UIView setAnimationDelegate:self]; CGFloat findFieldWidth = findField.frame.size.width; CGFloat urlFieldWidth = urlField.frame.size.width; CGRect findFieldFrame = findField.frame; CGRect urlFieldFrame = urlField.frame; findFieldFrame.origin.x = findFieldFrame.origin.x - 150.0f; findFieldFrame.size.width = findFieldWidth + 150.0f; urlFieldFrame.size.width = urlFieldWidth - 150.0f; urlField.frame = urlFieldFrame; findField.frame = findFieldFrame; [UIView commitAnimations]; I've modified this code slightly for the sake of presenting it here, but I hope this gives the gist. Any guesses as to why this is happening would be appreciated! Cheers, Aaron.

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  • Simulating Google Appengine's Task Queue with Gearman

    - by sotangochips
    One of the characteristics I love most about Google's Task Queue is its simplicity. More specifically, I love that it takes a URL and some parameters and then posts to that URL when the task queue is ready to execute the task. This structure means that the tasks are always executing the most current version of the code. Conversely, my gearman workers all run code within my django project -- so when I push a new version live, I have to kill off the old worker and run a new one so that it uses the current version of the code. My goal is to have the task queue be independent from the code base so that I can push a new live version without restarting any workers. So, I got to thinking: why not make tasks executable by url just like the google app engine task queue? The process would work like this: User request comes in and triggers a few tasks that shouldn't be blocking. Each task has a unique URL, so I enqueue a gearman task to POST to the specified URL. The gearman server finds a worker, passes the url and post data to a worker The worker simply posts to the url with the data, thus executing the task. Assume the following: Each request from a gearman worker is signed somehow so that we know it's coming from a gearman server and not a malicious request. Tasks are limited to run in less than 10 seconds (There would be no long tasks that could timeout) What are the potential pitfalls of such an approach? Here's one that worries me: The server can potentially get hammered with many requests all at once that are triggered by a previous request. So one user request might entail 10 concurrent http requests. I suppose I could have a single worker with a sleep before every request to rate-limit. Any thoughts?

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  • Android : ugly TABS in 2.0 vs 1.5 ... why ? where are my rounded corners TABS ?

    - by Hubert
    I simply use the tabwidget : mTabHost = getTabHost(); mTabHost.addTab(mTabHost.newTabSpec("tab_1").setIndicator(getString(R.string.day0)).setContent(R.id.tab1_content)); mTabHost.addTab(mTabHost.newTabSpec("tab_2").setIndicator(getString(R.string.day1)).setContent(R.id.tab2_content)); mTabHost.addTab(mTabHost.newTabSpec("tab_3").setIndicator(getString(R.string.day2)).setContent(R.id.tab3_content)); mTabHost.addTab(mTabHost.newTabSpec("tab_4").setIndicator(getString(R.string.day3)).setContent(R.id.tab4_content)); mTabHost.addTab(mTabHost.newTabSpec("tab_5").setIndicator(getString(R.string.about)).setContent(R.id.tab5_content)); mTabHost.setCurrentTab(0); Why are my tabs so uggly in 2.0 (no more rounded corners as in 1.5/1.6) ? ugly tabs here = this was better What should I do now to show "rounded corners" TABS to Nexus One (for exemple) users ;-) ? Is it because of the following manifest lines : <uses-sdk android:minSdkVersion="3" android:targetSdkVersion="4" /> <supports-screens android:smallScreens="true" android:normalScreens="true" android:largeScreens="true" android:anyDensity="true" /> I have to keep android:anyDensity="true" otherwise I've got a problem with re-sizing of the menus described here As a separate question, my users can change the Locale within my app itself, I then "redraw" the menus using onPrepareOptionsMenu (Menu menu) to refresh the strings within the menu with the new language choosen by the user. Is there an equivalent for TABS (I have local strings within the Title of the TABS) or do I have to delete all the tabs and re-create them from scratch ? Txs in advance for your help. Hub

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  • Preg Expression to identify classes/ids in a CSS file that have no contents

    - by dclowd9901
    I'm in the process of updating some old CSS files in our systems, and we have a bunch that have lots of empty classes simply taking up space in the file. I'd love to learn how to write Regular expressions, but I just don't get them. I'm hoping the more I expose myself to them (with a little more cohesive explanation), the more I'll end up understanding them. The Problem That said, I'm looking for an expression that will identify text followed by a '{' (some have spaces in between, and some do not) and if there are no letters or numbers between that bracket and '}' (spaces don't count), it will be identified as a matching string. I suppose I can trim the whitespace out of the doc before I run a regular expression through it, but I don't want to change the basic structure of the text. I'm hoping to return it into a large <textarea>. Bonus points for explaining the characters and their meanings, and also an expression identifying lines in the copy without any text or numbers, as well. I will likely use the final expression in PHP script. tl;dr: Regular Expression to match: .a_class_or #an_id { /* if there aren't any alphanumerics in here, this should be a matching line of text */ }

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  • Using JSON with jRails

    - by Zachary
    I am currently trying to use AJAX in my application via jRails. I am trying to return a JSON object from my controller, and then parse it in my Javascript. I am using json2.js to do the parsing. Here is the code I currently have: function getSomething() { $.ajax({ type: "GET", url: "map/testjson", success: function(data) { var myData = JSON.parse(data[0]); window.alert(myData.login); } }); } and in the controller: class Map::MapController < ApplicationController def index end def testjson @message = User.find(:all) ActiveRecord::Base.include_root_in_json = false respond_to do |w| w.json { render :json => @message.to_json } end end end The window.alert simply says 'undefined' (without tics). However, if I change the javascript to window.alert(data) (the raw object returned by the controller) I get: [{"salt":"aSalt","name":"", "created_at":"2010-03-15T02:34:25Z","remember_token_expires_at": null,"crypted_password":"aPassword", "updated_at":"2010-03-15T02:34:25Z","id":1,"remember_token":null, "login":"zgwrig2","email":"[email protected]"}] This looks like an array of size 1, if I'm looking at it correctly, but I have tried just about every combination of JSON.parse on the data object that I can think of, and nothing seems to work. Any ideas on what I'm doing wrong here?

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  • Best practices to develop and maintaing code for complex JQuery/JQueryUI based applications

    - by dafi
    I'm working on my first very complex JQuery based application. A single web page can contain hundreds of JQuery related code for example to JQueryUI dialogs. Now I want to organize code in separated files. For example I'm moving all initialization dialogs code $("#dialog-xxx").dialog({...}) in separated files and due to reuse I wrap them on single function call like dialogs.js function initDialog_1() { $("#dialog-1").dialog({}); } function initDialog_2() { $("#dialog-2").dialog({}); } This simplifies function code and make caller page clear $(function() { // do some init stuff initDialog_1(); initTooltip_2(); }); Is this the correct pattern? Are you using more efficient techniques? I know that splitting code in many js files introduces an ugly band-bandwidth usage so. Does exist some good practice or tool to 'join' files for production environments? I imagine some tool that does more work than simply minimize and/or compress JS code.

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  • Does replace into have a where clause?

    - by Lajos Arpad
    I'm writing an application and I'm using MySQL as DBMS, we are downloading property offers and there were some performance issues. The old architecture looked like this: A property is updated. If the number of affected rows is not 1, then the update is not considered successful, elseway the update query solves our problem. If the update was not successful, and the number of affected rows is more than 1, we have duplicates and we delete all of them. After we deleted duplicates if needed if the update was not successful, an insert happens. This architecture was working well, but there were some speed issues, because properties are deleted if they were not updated for 15 days. Theoretically the main problem is deleting properties, because some properties are alive for months and the indexes are very far from each other (we are talking about 500, 000+ properties). Our host told me to use replace into instead of deleting properties and all deprecated properties should be considered as DEAD. I've done this, but problems started to occur because of syntax error and I couldn't find anywhere an example of replace into with a where clause (I'd like to replace a DEAD property with the new property instead of deleting the old property and insert a new to assure optimization). My query looked like this: replace into table_name(column1, ..., columnn) values(value1, ..., valuen) where ID = idValue Of course, I've calculated idValue and handled everything but I had a syntax error. I would like to know if I'm wrong and there is a where clause for replace into. I've found an alternative solution, which is even better than replace into (using simply an update query) because deletes are happening behind the curtains if I use replace into, but I would like to know if I'm wrong when I say that replace into doesn't have a where clause. For more reference, see this link: http://dev.mysql.com/doc/refman/5.0/en/replace.html Thank you for your answers in advance, Lajos Árpád

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  • Question about Multicast Delegates?

    - by IbrarMumtaz
    I am going through some exam questions for the 70-536 exam and an actual question one developer posted on his blog has popped up in my exam questions. I cannot remember what his answer was .... but below is the question: You need to write a multicast delegate that accepts a DateTime argument and returns a bool value. Which code segment should you use? A: public delegate int PowerDeviceOn(bool, DateTime) B: public delegate bool PowerDeviceOn(Object, EventArgs) C: public delegate void PowerDeviceOn(DateTime) D: public delegate bool PowerDeviceOn(DateTime) The answer is A. Can someone please explain why? As I already did some research into this question a while ago and so I was sure that it was C, obviously now looking back at the question its clear that I did not read properly. As i was sure I had seen the same one before so I jumped to the most obvious one. A variation on this question: You need to write a multicast delegate that accepts a DateTime argument. Which code segment should you use? A: public delegate int PowerDeviceOn(bool, DateTime) B: public delegate bool PowerDeviceOn(Object, EventArgs) C: public delegate void PowerDeviceOn(DateTime) D: public delegate bool PowerDeviceOn(DateTime) Now this is another variation on this question, it still has the same bogus sample answers, as they still kind work in throwing the exam taker off. Notice how by simply keeping the sample answers the same and by removing a small portion of the question text, the answer is C and not A. The variation has no official answer as I just conjured it up using the exam question as a baseplate. The answer is definitely C. This time round its easy to see why C is correct but the very first question I have an inkling but as you know an inkling is not good enough in passing exams. Thanks For Reading.

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  • ASP.NET Content Web Form - content from placeholder disappears

    - by Naeem Sarfraz
    I'm attempting to set a class on the body tag in my asp.net site which uses a master page and content web forms. I simply want to be able to do this by adding a bodycssclass property (see below) to the content web form page directive. It works through the solution below but when i attempt to view Default.aspx the Content1 control loses its content. Any ideas why? Here is how I'm doing it. I have a master page with the following content: <%@ Master Language="C#" ... %> <html><head>...</head> <body id=ctlBody runat=server> <asp:ContentPlaceHolder ID="cphMain" runat="server" /> </body> </html> it's code behind looks like: public partial class Site : MasterPageBase { public override string BodyCssClass { get { return ctlBody.Attributes["class"]; } set { ctlBody.Attributes["class"] = value; } } } it inherits from: public abstract class MasterPageBase : MasterPage { public abstract string BodyCssClass { get; set; } } my default.aspx is defined as: <%@ Page Title="..." [master page definition etc..] bodycssclass="home" %> <asp:Content ID="Content1" ContentPlaceHolderID="cphMain" runat="server"> Some content </asp:Content> the code behind for this file looks like: public partial class Default : PageBase { ... } and it inherits from : public class PageBase : Page { public string BodyCssClass { get { MasterPageBase mpbCurrent = this.Master as MasterPageBase; return mpbCurrent.BodyCssClass; } set { MasterPageBase mpbCurrent = this.Master as MasterPageBase; mpbCurrent.BodyCssClass = value; } } }

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  • What is your best-practice advice on implementing SQL stored procedures (in a C# winforms applicatio

    - by JYelton
    I have read these very good questions on SO about SQL stored procedures: When should you use stored procedures? and Are Stored Procedures more efficient, in general, than inline statements on modern RDBMS’s? I am a beginner on integrating .NET/SQL though I have used basic SQL functionality for more than a decade in other environments. It's time to advance with regards to organization and deployment. I am using .NET C# 3.5, Visual Studio 2008 and SQL Server 2008; though this question can be regarded as language- and database- agnostic, meaning that it could easily apply to other environments that use stored procedures and a relational database. Given that I have an application with inline SQL queries, and I am interested in converting to stored procedures for organizational and performance purposes, what are your recommendations for doing so? Here are some additional questions in my mind related to this subject that may help shape the answers: Should I create the stored procedures in SQL using SQL Management Studio and simply re-create the database when it is installed for a client? Am I better off creating all of the stored procedures in my application, inside of a database initialization method? It seems logical to assume that creating stored procedures must follow the creation of tables in a new installation. My database initialization method creates new tables and inserts some default data. My plan is to create stored procedures following that step, but I am beginning to think there might be a better way to set up a database from scratch (such as in the installer of the program). Thoughts on this are appreciated. I have a variety of queries throughout the application. Some queries are incredibly simple (SELECT id FROM table) and others are extremely long and complex, performing several joins and accepting approximately 80 parameters. Should I replace all queries with stored procedures, or only those that might benefit from doing so? Finally, as this topic obviously requires some research and education, can you recommend an article, book, or tutorial that covers the nuances of using stored procedures instead of direct statements?

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  • QT- QImage and multi-threading problem.

    - by umanga
    Greetings all, Please refer to image at : http://i48.tinypic.com/316qb78.jpg We are developing an application to extract cell edges from MRC images from electron microscope. MRC file format stores volumetric pixel data (http://en.wikipedia.org/wiki/Voxel) and we simply use 3D char array(char***) to load and store data (gray scale values) from a MRC file. As shown in the image,there are 3 viewers to display XY,YZ and ZX planes respectively. Scrollbars on the top of the viewers use to change the image slice along an axis. Here is the steps we do when user changes the scrollbar position. 1) get the new scrollbar value.(this is the selected slice) 2) for the relavant plane (YZ,XY or ZX), generate (char* slice;) array for the selected slice by reading 3D char array (char***) 3) Create a new QImage* (Format_RGB888) and set pixel values by reading 'slice' (using img-setPixel(x,y,c);) 4) This new QImage* is painted in the paintEvent() method. We are going to execute "edge-detection" process in a seperate thread since it is an intensive process.During this process we need to draw detected curve (set of pixels) on top of above QImage*.(as a layer).This means we need to call drawPoint() methods outside the QT thread. Is it the best wayto use QImage for this case? What is the best way to execute QT drawing methods from another thread? thanks in advance,

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  • How do I securely authenticate the calling assembly of a WCF service method?

    - by Tim
    The current situation is as follows: We have an production .net 3.5 WCF service, used by several applications throughout the organization, over wsHttpBinding or netTcpBinding. User authentication is being done on the Transport level, using Windows integrated security. This service has a method Foo(string parameter), which can only be called by members of given AD groups. The string parameter is obligatory. A new client application has come into play (.net 3.5, C# console app), which eliminates the necessity of the string parameter. However, only calls from this particular application should be allowed to omit the string parameter. The identity of the caller of the client application should still be known by the server because the AD group limitation still applies (ruling out impersonation on the client side). I found a way to pass on the "evidence" of the calling (strong-named) assembly in the message headers, but this method is clearly not secure because the "evidence" can easily be spoofed. Also, CAS (code access security) seems like a possible solution, but I can't seem to figure out how to make use of CAS in this particular scenario. Does anyone have a suggestion on how to solve this issue? Edit: I found another thread on this subject; apparently the conclusion there is that it is simply impossible to implement in a secure fashion.

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  • Actionscript: NetStream stutters after buffering.

    - by meandmycode
    Using NetStream to stream content from http, I've noticed that esp with certain exported h264's, if the player encounters an empty buffer, it will stop and buffer to the requested length (as expected). However once the buffer is full, the playback doesn't resume, but instead jumps ahead, as such- instantly playing the buffered duration in a brief moment, and thusly triggering an empty buffer again.. this will then continue over and over. Presumably when the netstream pauses to buffer, the playhead position continues, and the player is attempting to snap to that position on resume- however given it could take 5 seconds to build a 2 second buffer- it ends up with a useless buffer again.. (this is an assumption) I've attempted to work around this by listening for an empty buffer netstatus event, pausing the stream, and at the same time setting up a loop to check the current buffer length vs the requested buffer length.. and resuming once the buffer length is greater than or equal to the requested buffer.. however this causes problems when there isn't enough of the video remaining.. for example, a 10 second buffer with only 5 seconds remaining, the loop just sits there waiting for a buffer length of 10 seconds when theres only 5 left... You would think that you could simply check which was smaller, the time left or the requested buffer length.. however the times flash gives are not accurate.. If you add the net streams current time index, plus the buffered time, the total is not the entire duration of the movie (when at the end).. it is close but not the same. This brings me back to the original problem, and if there is another way to fix this, clearly flash knows when the buffer is ready, so how can i get flash pause when it buffers, and resume once the buffer is ready? currently it doesn't.. it pauses and then once the buffer is full- it plays the entire buffered content in about .1 of a second. Thanks in advance, Stephen.

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  • cleaning up noise in an edge detection algoritum

    - by Faken
    I recently wrote an extremely basic edge detection algorithm that works on an array of chars. The program was meant to detect the edges of blobs of a single particular value on the array and worked by simply looking left, right, up and down on the array element and checking if one of those values is not the same as the value it was currently looking at. The goal was not to produce a mathematical line but rather a set of ordered points that represented a descritized closed loop edge. The algorithm works perfectly fine, except that my data contained a bit of noise hence would randomly produce edges where there should be no edges. This in turn wreaked havoc on some of my other programs down the line. There is two types of noise that the data contains. The first type is fairly sparse and somewhat random. The second type is a semi continuous straight line on the x=y axis. I know the source of the first type of noise, its a feature of the data and there is nothing i can do about it. As for the second type, i know it's my program's fault for causing it...though i haven't a hot clue exactly what is causing it. My question is: How should I go about removing the noise completely? I know that the correct data has points that are always beside each other and is very compact and ordered (with no gaps) and is a closed loop or multiple loops. The first type of noise is usually sparse and random, that could be easily taken care of by checking if any edges is next that noise point is also counted as an edge. If not, then the point is most defiantly noise and should be removed. However, the second type of noise, where we have a semi continuous line about x=y poses more of a problem. The line is sometimes continuous for random lengths (the longest was it went half way across my entire array unbroken). It is even possible for it to intersect the actual edge. Any ideas on how to do this?

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