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  • Silverlight Binding: User controls inside datagrid.

    - by Eric
    I have a DataGrid in my silverlight app that has a few columns. A couple basic columns bound with no issues. One column has a UserControl in it and the XAML is as follows: <data:DataGridTemplateColumn Header="" CanUserSort="True" Width="107"> <data:DataGridTemplateColumn.CellTemplate> <DataTemplate> <local:StaticPageEnlistment EnlistmentName="{Binding SiteName}" Width="400" Height="150"/> </DataTemplate> </data:DataGridTemplateColumn.CellTemplate> </data:DataGridTemplateColumn> So I have a public property that's a string called EnlistmentName that I have bound to the SiteName value. I use this same "{Binding SiteName}" in all my other colums with no issues, why can't the user control accept the same binding string?

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  • Benefits of arrays

    - by Vitalii Fedorenko
    As I see it, the advantages of List over array are pretty obvious: Generics provide more precise typing: List<Integer>, List<? extends Number>, List<? super Integer>. List interface has a bunch useful methods: addAll, remove etc. While for arrays all standard operations except get/set must be performed in a procedure manner by passing it to a static method. Collections offer different implementations like ArrayList, LinkedList, unmodifieable and synchronized lists, which can be hidden under common List interface. OOB length control. As disadvantages I can only mention absence of syntactic sugar and runtime type check. At the same time supporting of both structures requires frequent using of asList and toArray methods, which makes code less readable. So I am curious if there are any important benefits of using arrays that I miss.

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  • Why is glpk-java.jar not the same across all platforms?

    - by pruefsumme
    I'm using glpk-java in one of my projects. It provides a JNI to GLPK, a free LP/MIP solver. To use it under different platforms, you need different shared libraries (libglpk.so under Linux, libglpk.dylib under Mac OS X, glpk.dll under Windows) which is fully understandable. In addition, a java library is needed: glpk-java.jar. It's created as part of the build process. I was wondering why this JAR file (which only contains .class files) is different under different platforms? I.e., I cannot use the same glpk-java.jar under Linux and Mac OS X which means that I cannot put this file under revision control.

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  • Different ways to specify libraries to gcc/g++

    - by abigagli
    I'd be curious to understand if there's any substantial difference in specifying libraries (both shared and static) to gcc/g++ in the two following ways (CC can be g++ or gcc) CC -o output_executable /path/to/my/libstatic.a /path/to/my/libshared.so source1.cpp source2.cpp ... sourceN.cpp vs CC -o output_executable -L/path/to/my/libs -lstatic -lshared source1.cpp source2.cpp ... sourceN.cpp I can only see a major difference being that passing directly the fully-specified library name would make for a greater control in choosing static or dynamic versions, but I suspect there's something else going on that can have side effects on how the executable is built or will behave at runtime, am I right? Andrea.

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  • How can I get Text property to initialize to the objects name at design time?

    - by cyclotis04
    When you add a label to the form from the toolbox, its text defaults to the item's name (label1, label2, etc). How can I make this happen with a custom control? So far, I have the following, which allows me to change the text through the property window: private string _text; [BrowsableAttribute(true)] public override string Text { get { return _text; } set { _text = value; lblID.Text = _text; } } Apparently the above code works as is, but I'm not sure why. Does Text default to the object's name automatically? The question still stands for other properties which don't override Text.

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  • TCP 3 way handshake

    - by Tom
    Hi, i'm just observing what NMAP is doing for the 3 ports it reports are open. I understand what a half-scan attack is, but what's happening doesnt make sense. NMAP is reporting ports 139 are 445 are open..... all fine. But when i look at the control bits, NMAP never sends RST once it has found out the port is open, It does this for port 135- but not 139 and 445. This is what happens: (I HAVE OMITTED THE victim's replies) Sends a 2 (SYN) Sends a 16 (ACK) Sends a 24 (ACK + PST) Sends a 16 (ACK) Sends a 17 (ACK + FIN) I dont get why NMAP doesnt 'RST' ports 139 and 445??

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  • Mercurial: Share a repo without putting it on a server?

    - by Rosarch
    I am working in a student group with several other people. We would like to use Mercurial as our version control system, but some of our files can't be put online in a public hosting service like Google Projects or Codeplex. Is there some way that we can host a repo on our own machines, passing the files/changesets between each other as necessary, without creating a horribly conflicted mess? I know that Mercurial has a bundle command that can be used to package a repo. If I do that, and send the bundle someone else, and they want to get the changes back to me, what's the best way to do that? Send me a bundle back? I have a shared hosting account on a server. Is there any chance I could run Mercurial off that box? How would I find this out?

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  • Style all anchors except those that contain images, without adding class or id to the image tag?

    - by Deca
    With the example below, I need to add padding and background-color properties to the text anchor. I then need to exclude padding and background-color from anchors that contain images. <p> <a href="#">this is a text link that needs to be styled</a> <a href="#"><img src="image/name.jpg" alt="this needs to be excluded from styling" /></a> </p> If I have a red background and padding on my text links, I do not want that same red background and padding to appear on my linked images. The images will always be in their own anchors, not mixed with text within the same anchor. The rub is that I can not add classes or IDs to the img tags - I do not have edit control of that data. So how can I add CSS attributes to all anchors, while excluding anchors that contain images?

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  • Which Visual Studio 2010 edition for sole developer

    - by bufferz
    I am the sole .net developer for a small company. My projects span many .net technologies including WinForms, WPF, SQL, XNA, Linq, WCF, WTF?, and others. I struggle staying on top of all these projects so I'm looking to make my life easier with the release of VS2010. Without a mentor I rely heavily on StackOverflow and whatever else Google comes up with. Should I convince my company to get an edition with an MSDN subscription? Is it one of those things where once you have it, you can't imagine life without it? What about the source control that comes with VS2010, do you all find it better than an SVN server? We're looking to hire another programmer this year, would I be best off getting a Team edition of VS2010 to be best prepared for that hire? Thanks!

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  • How to use JQuery to remove dynamic content?

    - by ed.talmadge
    I have an html page that is generated by a CMS. I cannot modify the page, but can add JavaScript. Each time the page loads, a JavaScript function (that I cannot modify) dynamically inserts a paragraph onto the page. How can I use JQuery to .remove() that paragraph whenever it is loaded? For example, when the page first loads, it look like this (blank): <div></div> Then, a few seconds later, a JavaScript function (that I have no control over) adds a paragraph to the page. The page then looks like this: <div><p id="foo">bar</p></div> How can I use JQuery to remove the paragraph with id=foo each time it is dynamically loaded onto the page?

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  • Object-oriented Programming - need your help

    - by wanderameise
    hey folks, I try to realize a little game project to dive deeper into OO programming (winforms c++/cli). I already started coding but now I´d like to make a re-design. For the beginning the game should consist of four parts like game-engine, user interface, highscore and playground. Heres a little (non-UML-conform) class diagramm to visualize my purposes http://i.imgur.com/lmpwj.png Would this be the right way? In my eyes the game engine is responsible to control the game sequences (state machine?) and exchanges information betweens all other classes. I appreciate any help!

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  • Universal syntax file format?

    - by Isaiah
    Hey as a project to improve my programing skills I've begun programing a nice code editor in python to teach myself project management, version control, and gui programming. I was wanting to utilize syntax files made for other programs so I could have a large collection already. I was wondering if there was any kind of universal syntax file format much in the same sense as .odt files. I heard of one once in a forum, it had a website, but I can't remember it now. If not I may just try to use gedit syntax files or geany. thanks

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  • BlackBerry. How to define direction of Scroll or Focus change?

    - by Lyubomyr Dutko
    Hi, does BlackBerry has any possibility to track focus or scroll change direction? I will describe a case. On UI we have a list and some horizontal tab bar (tab bar at top and below the list actually). If User is somewhere in the middle of a list and decides to click another tab, it appears a little difficult to put focus on the Tab control, so User scrolls to the first list item and after changes focus to tab (as a result very long operation). The point here How to catch event of horizontal scroll to change currently focused tab? And after if you scroll (by trackball) vertically you go back to list. Possibly you can advice with the right approach how to resolve such issues? Thanks Lyubomyr

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  • Nonstatic conversion functions; Casting different types, e.g. DirectX vector to OpenGL vector

    - by Markus
    I am currently working on a game "engine" that needs to move values between a 3D engine, a physics engine and a scripting language. Since I need to apply vectors from the physics engine to 3D objects very often and want to be able to control both the 3D, as well as the physics objects through the scripting system, I need a mechanism to convert a vector of one type (e.g. vector3d<float>) to a vector of the other type (e.g. btVector3). Unfortunately I can make no assumptions on how the classes/structs are laid out, so a simple reinterpret_cast probably won't do. So the question is: Is there some sort of 'static'/non-member casting method to achieve basically this: vector3d<float> operator vector3d<float>(btVector3 vector) { // convert and return } btVector3 operator btVector3(vector3d<float> vector) { // convert and return } Right now this won't compile since casting operators need to be member methods. (error C2801: 'operator foo' must be a non-static member)

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  • How to host your own http-like server using ServiceHost?

    - by Ole Jak
    I use ServiceHost for hosting WCF cervices. I want to host near to my WCF services my own tcp programm (like WCF service but with out WCF) for direct sockets operations (like lien to some sort of broadcasting TCP stream) I want to use ServiceHost for somehow simplyfiing proces of creating my TCP sender\listener, to somehow control namespaces (so I would be able to let my clients to send TCP streams directly into my service using some nice URLs like www.example.com:34123/myserver/stream?id=1 or www.example.com:34123/myserver/stream?id=222 and so that I will not be bothered with Idea of 1 client for 1 socket at one time moment, BTW I realy want to keep my WCF services on the same port as my own server or what it is...) Can any body please hrlp me with this?

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  • How call soap service using jQuery

    - by Alen D
    I have a problem with calling soap service from php page. I was implemented two page,first page was created in php, and second page was created in asp.net. In asp.net application I have SOAP service, which methods should be called from php. Method on my SOAP service, look like this: [WebMethod] [ScriptMethod(ResponseFormat = ResponseFormat.Json)] public bool UpdateVotes(string vote) { //Code } On PHP application I call UpdateVotes method on the next way: $.ajax({ type: "POST", url: "http://localhost:5690/VoteServices.asmx/UpdateVotes", data: "{'vote': '" + vote + "'}", contentType: "application/json; charset=utf-8", dataType: "json", success: function (msg) { }, error: function (xhr, status, error) { } }); First I run asp.net application with SOAP service, and than I start php aplication. When i click on button for calling web method on service i browser console i got this error: Failed to load resource: the server responded with a status of 500 (Internal Server Error) http://localhost:5690/VoteServices.asmx/UpdateVotes XMLHttpRequest cannot load http://localhost:5690/VoteServices.asmx/UpdateVotes. Origin http://localhost:8080 is not allowed by Access-Control-Allow-Origin.

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  • Can you modify SQL DB schema in a transaction to know if all changes were applied?

    - by Chris F
    As part of my (new) database version control methodology, I'm writing a "change script" and want the change script to insert a new row into the SchemaChangeLog table if the script is executed successfully, or to reverse changes if any single change in the script fails. Is it possible to do schema changes in a transaction and only if it gets committed to then do the INSERT? For example (psuedo-code, I'm not too good with SQL): SET XACT_ABORT ON BEGIN TRANSACTION PRINT 'Add Col2 to Table1' IF NOT EXIST (SELECT * FROM sys.columns WHERE NAME='Col2' AND object_id=OBJECT_ID('Table1')) BEGIN ALTER TABLE [dbo].[Table1] ADD Col2 int NULL END -- maybe COMMIT here? INSERT INTO SchemaChangeLog VALUES(...) COMMIT TRANSACTION

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  • crossdomain cookie using iframe, how?

    - by vsync
    I searched a lot on this topic, but didn't really found a solid answer to this. I need to set a cookie from any domain (out of my control), lets say "Domain B" to my main domain, lets say "Domain A", and be able to read the cookie also, without exiting Domain B. kinda like Facebook connect for websites, or Snap.com, and others of the sort. how it that done? If I look at lets say http://ajaxian.com/ I see Firecookie shows cookies from many domains being used on that website, and I really wanna know how it's achieved.

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  • wrong font in a RichTextBox importing from .rtf

    - by giacomellow
    Hi all, I'm developing a microsoft surface application using expression blend+vs 2008. I have a RichTextBox that loads formatted text from an .rtf file. The text is formatted with uppecases, color, and specific font (helvetica-neue). When i load the text, it is displayed in the control with matching format (color and uppecase) but NOT matching font. it seems to use the standard Blend font (Thaoma). the text is loaded with this function: public static RichTextBox SetRTFText(string text, RichTextBox richTextBox) { MemoryStream stream = new MemoryStream(ASCIIEncoding.Default.GetBytes(text)); TextRange documentTextRange = new TextRange(richTextBox.Document.ContentStart, richTextBox.Document.ContentEnd); documentTextRange.Load(stream, DataFormats.Rtf ); return richTextBox; } thank you all!

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  • How do I add a new ItemTemplate to a Guidance Automation Toolkit vs2010 .vsix package?

    - by Maslow
    I have a vs2008 GAT package that has been updated to work on vs2010 which walks a developer through creating a custom solution complete with a Service layer project, Domain, usercontrol, and unit test project. I'd like to add a new ItemTemplate to the package to create a user control or dialog that adheres to our current practices. So far it seems I need a Recipe, but I can not find any reference for the GuidancePackage.xml file and how to properly add things to it, let alone how to add a new Item Template or guidance steps and decisions. How can I add an item template to my add-in?

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  • ReportViewer datadinding (WPF)

    - by user512150
    I have a rdlc file and I try to show it using report viewer control in WPF. My DataSource is called 'OfficeDataSet' and DataSet used in report is called 'Address'. I try to initialize report viewer (I put it in WindowsFormsHost) like this: private void PrepareReport() { reportDataSource = new ReportDataSource(); officeDataSet = new OfficeDataSet(); adapter = new AddressTableAdapter(); adapter.Fill(officeDataSet.Address); reportDataSource.Name = "OfficeDataSet_Address"; reportDataSource.Value = officeDataSet.Address; viewerInstance.LocalReport.DataSources.Add(reportDataSource); viewerInstance.LocalReport.ReportEmbeddedResource = "WpfApplication1.Reports.TestReport.rdlc"; viewerInstance.Location = new System.Drawing.Point(0, 0); viewerInstance.RefreshReport(); } but I got the message "A data source instance has not been supplied for the data source 'Address'". Anybody know what can be wrong with this code? (I'm totally new in WPF and Reporting Services).

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  • What would you like to see in a book about Rails 3?

    - by Ryan Bigg
    Hello, I'm thinking of writing a book about Rails 3 and I have a basic idea of what I want to write about, but really what I need is that little bit of polish from the community. The book is planned to cover: A little bit of Ruby Version control using Git Testing using RSpec & Cucumber Life without Rails (Rack) Developing an application in Rails (vague, I know, sorry! Work in progress) Javascript testing using Selenium Background processing Document databases (a tentative maybe, at this stage) Monitoring an application And a little more. So, I leave this question for you: What do you want to see in a book about Rails 3, which goes from "This is Rails" to "This is how Rails scales"?

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  • Controlling access to large files in Apache

    - by obeattie
    Hi there, I am looking to control access to some large files (we're talking many GB here) by the use of signed URLs. The files are currently restricted by LDAP Basic authentication (mod_auth_ldap), but I need to change this to verify the signature (passed as a query parameter in the URL). Basically, I just need to run a script to verify the signature, and allow the request to proceed as if authentication had succeeded. My initial thought to this was just to use a simple CGI script, but as the files are so large I'm concerned about performance. So, really, this question is (probably) more like "are there any performance implications of streaming large files from a CGI script via Apache?"… and if so, "is there a better way of doing this (short of writing a dedicated authentication module)?" If this makes any sense, help would be much appreciated :) P.S. I wasn't sure exactly what to search for for this (10 minutes of Googling were fruitless), so I may very well be duplicating someone else's post.

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  • How can I configure Xcode to put '{' where I want it in generated files

    - by djhworld
    I know this is a fairly contentious issue amongst programmers, but when developing I like my IDE to position the opening curly bracket underneath the method/interface/control declaration, for illustrative purposes: - This is how Xcode automatically generates skeleton methods with the { at the end: - -(void) isTrue:(BOOL)input { if(input) { return YES; } else { return NO; } } This is how I like to lay out my code (which I believe is called the Allman style): - -(void) isTrue:(BOOL)input { if(input) { return YES; } else { return NO; } } I'm just wondering if there's any configuration switch in Xcode to enable this style of development? It's really annoying when typing out if/else statements as it tends to auto-complete the else clause with the { at the end of the line which just looks silly if you like developing with them underneath. Or am I being unreasonable? Is Objective-C supposed to adhere to a standard defined by Apple?

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  • How we should load theMFMailComposeViewController in cocos2d ?

    - by srikanth rongali
    I am writing an app in using cocos2d. This method I have written for the selector goToFirstScreen: . The view is in landscape mode. I need to send an email. So, I need to launch the MFMailComposeViewController. I need it in portrait mode. But, the control is not entering in to viewDidLoad of the mailMe class. The problem is in goToScreen: method. But, I do not get where I am wrong ? -(void)goToFirstScreen:(id)sender { CCScene *Scene = [CCScene node]; CCLayer *Layer = [mailME node]; [Scene addChild:Layer]; [[CCDirector sharedDirector] setAnimationInterval:1.0/60]; [[CCDirector sharedDirector] pushScene: Scene]; } Thank you .

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