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• CLR debugger and 'var'

  - by Ken

  I'm using the CLR debugger (version 8, from "Visual Studio 2005") to debug some C# code. I can step through my code, but for many variables, the debugger won't show me its value. That is, if I type it in the "Immediate" frame or add it to the "Watch" frame, it says "Unable to evaluate the expression.". It seems to do this a lot for var variables, but I'm also seeing it for parameters and properties, too. I have not been able to figure out what the pattern is. Is there a rule for when it can display the value of a variable? Is there something I need to do to my code, or in my build script, to make the debugger able to view variables? Or is there a hidden debugger setting?

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• What Source Control?

  - by Hein du Plessis

  I desperately need source control to manage projects between more than one developer. A long time ago I used Visual Source Safe and it worked quite well. Can anybody recommend a free substitute? I have the following basic requirements: I need to host the repository on my own server. I do not want extra clutter within my source files, like CVS does. I need proper check in / check out, so that nobody can change a module until I've checked it back in. I don't want / need source code merging / branching. We use Delphi for web development, so many html files, images, sql files, etc. Any recommendations?

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• Is there a way to put relationships/contraints into CSS?

  - by hekevintran

  In every design tool or art principle I've heard of, relationships are a central theme. By relationships I mean the thing you can do in Adobe Illustrator to specify that the height of one shape is equal to half the height of another. You cannot express this information in CSS. CSS hard-codes all values. Using a language like LESS that allows variables and arithmetic you can get closer to relationships but it's still a CSS variant. This inability in my mind is the biggest problem with CSS. CSS is supposed to be a language that describes the visual component of a Web page but it ignores relationships and contraints, ideas that are at the core of art. How possible is it to imagine a new Web design language that can express relationships and contraints that can be implemented in JavaScript using the current CSS properties?

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• How to convert from K&R C to ANSI C?

  - by Vadakkumpadath

  I am trying to execute following code which is the 1988 entry of Obfuscated C Code Contest. #define _ -F<00||--F-OO--; int F=00,OO=00;main(){F_OO();printf("%1.3f\n",4.*-F/OO/OO);}F_OO() { _-_-_-_ _-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_ _-_-_-_ } From entry description, this code is calculating pi by looking at its own area. I successfully compiled it without changing the code. But when I executed, it is giving me a value 0.25, what I am expecting is 3.14. Code description says it is in K&R C and it doesn't work correctly in ANSI C without some change. I think I have to do those modification to execute it properly. I don't have any previous experience with K&R C. So can someone help me to change above code to ANSI C or point to the problems if any. I am using Microsoft Visual Studio 2008 to execute this.

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• Object Reference Error filling a datarow

  - by JPJedi

  This is the code: Dim dr() As DataRow = DataSet.Tables("TableName").Select("EVENTNAME = '" & name & "'") I get an "Object reference not set to an instance of an object." Error when this line is executed. It is looping through a list of selected items in a listbox. I think it has to do with how I have the datarow declared because I can look at the name and I see it ok and I also do a null check on the name before I use it. Visual Studio 2008, VB.NET. Any ideas? Yep it was a wrong table name. I guess after looking at the code for 8 hours that minor detail I just wasn't thinking to check. Thanks!

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• How can you determine when the user scrolls to the bottom of a DataGridView?

  - by Craig

  I am writing a C# Windows Forms Application in Visual Studio 2008. I have a DataGridView with a lot of data in it. I would like to initially only populate 10,000 rows and add more only when the user scrolls to the bottom. I am handling the DataGridView's Scroll event, but it never seems to raise with the ScrollEventArgs.Type property set to Last, which is the condition I think I need to catch to add more rows. I have read about people having bad experiences with the DataGridView.Scroll event (e.g. http://stackoverflow.com/questions/785200/datagridview-scroll-event-and-scrolleventtype-endscroll), but the solution provided (http://stackoverflow.com/questions/472389/how-can-i-receive-the-scroll-box-type-scroll-events-from-a-datagridview/767603#767603) only adds the ScrollEventArgs.Type property to come back as EndScroll, not Last like I need. Does anybody know how to get the event to raise properly, or another way to accomplish this task?

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• Using stored procedure in crystal report 8.5?

  - by odiseh

  I have made a new report using Crystal Reports 8.5 (report1) which uses a stored procedure as its data source. The stored procedure has 2 input parameters (@p1 and @p2) and when I enter some test data for @p1 and @p2 within crystal report IDE , every thing is all right. Then, I added the report1 in visual basic 6.0 IDE and added a new form (form1) and a crystal report viewer control on form1. Now please help me: I wanna to show the report1. What codes exactly should I write to show it?How send data user has entered to the stored procedure parameters via application? I also get this error messsage: the server has not been opened yet" What's wrong?

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• WPF: "Items collection must be empty before using ItemsSource."

  - by Zack Peterson

  I'm trying to get images to display in a WPF ListView styled like a WrapPanel as described in this old ATC Avalon Team article: How to Create a Custom View. When I try to populate the ListView with a LINQ-to-Entities queried collection of ADO.NET Entity Framework objects I get the following exception: Exception Items collection must be empty before using ItemsSource. My code… Visual Basic Private Sub Window1_Loaded(...) Handles MyBase.Loaded ListViewImages.ItemsSource = From g In db.Graphic _ Order By g.DateAdded Ascending _ Select g End Sub XAML <ListView Name="ListViewImages" SelectionMode="Single" ItemsSource="{Binding}"> <local:ImageView /> </ListView> I put a breakpoint on that line. ListViewImages.ItemsSource is Nothing just before the LINQ assignment.

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• Sharepoint Foundation 2010 development single machine installation problems

  - by Robert Koritnik

  I'm having problems installing development machine for Sharepoint (Foundation) 2010. This is what I did so far on the same machine: Installed a clean Windows 7 x64 with 4GB of RAM without being part of any domain. Just a simple standalone machine. Enabled IIS related features as described here except IIS6 related ones (two of them) Installed SQL Server 2008 R2 Development Edition (DB Engine and Writer being enabled but not SQL Agent) Installed Visual Studio 2010 Premium Started installing Sharepoint Foundation 2010 with first extracting files, changing config to enable Windows 7 installation and then installed it as Server Farm (then Complete) to avoid installing SQL Express. Created a separate SPF_CONFIG local user with Logon on as a service right. Opened SPF Management Shell and run New-SPConfigurationDatabase so I am able to use a non-domain username (SPF_CONFIG that I created in the previous step) But all I get is this: The outcome after this error is: Database Sharepoint2010Config is created User SPF_CONFIG is added to SQL Server and attached to this newly created database as dbowner and checking SQL server security logins this user has following rights: dbcreator securityadmin public

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• How to setup a DotNetNuke Development Environment with Source Control?

  - by Joosh21

  My team is developing a new DotNetNuke web application and would like to know what is recommended to setup a development environment with source control and automated builds? We would like to keep the DNN source code separate from our custom modules and extensions source code. The DotNetNuke Compiled Module template for Visual Studio wants us to store the source code in the DesktopModules directory of the DNN source code and output to the DNN source code bin directory. Is this the recommended structure? I would rather keep the files in different locations, but then it becomes more difficult to run and debug locally as it would require an install of the module for each change. Also, how should an automated build deploy any changes? How have others set this up? Is there a recommended best practice?

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• Using WebParts results in blank page

  - by dale

  Hi, I'm developing an ASP.NET (C#) application using EPiServer CMS 5. On the startpage we have four WebPart-zones and everything works great running it through Visual Studio. When publishing it to the production-server the startpage shows as a blank page, no error what so ever... When we remove these lines of code it works, so it has something to do with the WebParts. <WebParts:ExtendedWebPartManager ID="WebPartsManager" runat="server"></WebParts:ExtendedWebPartManager> <WebParts:ExtendedWebPartZone WebPartProperty="WebPartZone1" runat="server" ID="WebPartZone1" PartChromeType="None" AllowLayoutChange="false" Padding="0" PartChromePadding="0" Width="100%"></WebParts:ExtendedWebPartZone> <WebParts:ExtendedWebPartZone WebPartProperty="WebPartZone2" runat="server" ID="WebPartZone2" PartChromeType="None" AllowLayoutChange="false" Padding="0" PartChromePadding="0" Width="100%"></WebParts:ExtendedWebPartZone> <WebParts:ExtendedWebPartZone WebPartProperty="WebPartZone3" runat="server" ID="WebPartZone3" PartChromeType="None" AllowLayoutChange="false" Padding="0" PartChromePadding="0" Width="100%"></WebParts:ExtendedWebPartZone> <WebParts:ExtendedWebPartZone WebPartProperty="WebPartZone4" runat="server" ID="WebPartZone4" PartChromeType="None" AllowLayoutChange="false" Padding="0" PartChromePadding="0" Width="100%"></WebParts:ExtendedWebPartZone>

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• Git on windows :|

  - by Sonic Soul

  i've been experimenting with git as my personal code rep.. and it has been a bit of a disaster with windows. i've used Subversion, CVS, and Perforce in the past.. none were as annoying to use as git. i've figured out the PGP part (for github), although my workstation no longer lets me check in, and after searching around it turns out that git bash is using putty which is not that reliable and should be configured with something else.. i was not able to configure it with windows shell extension for a nice visual of what is part of the repository, what is modified, and easy check ins, and easy pushes.. has anyone successfully configured some kind of windows shell client and can efficiently and quickly synchronize various machines? It just seems to be more pain to use than it is worth..

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• NDbUnit MySQL Assembly Version Conflict

  - by LnDCobra

  I am trying to use NHiberanate with NDbUnit but I cannot as NDbUnit tried to load MySql.Data version 1.0.10.1 and NHibernate tries to load version 6.2.2.0 and I can only reference one of them. Here is the error I get when i try to run NDbUnit Set Up System.IO.FileLoadException: Could not load file or assembly 'MySql.Data, Version=1.0.10.1, Culture=neutral, PublicKeyToken=c5687fc88969c44d' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) at NDbUnit.Core.MySqlClient.MySqlDbCommandBuilder.GetConnection(String connectionString) at NDbUnit.Core.DbCommandBuilder..ctor(String connectionString) at NDbUnit.Core.MySqlClient.MySqlDbCommandBuilder..ctor(String connectionString) at NDbUnit.Core.MySqlClient.MySqlDbUnitTest.CreateDbCommandBuilder(String connectionString) at NDbUnit.Core.NDbUnitTest.GetDbCommandBuilder() at NDbUnit.Core.NDbUnitTest.ReadXmlSchema(Stream xmlSchema) at NDbUnit.Core.NDbUnitTest.ReadXmlSchema(String xmlSchemaFile) at Proteus.Utility.UnitTest.DatabaseUnitTestBase.SaveDatabase(String connectionString, String schemaFilePathName, String datasetFilePathName, DatabaseClientType clientType) at TGS.UserAccountControlTest.UserAccountManagerTest._TestFixtureSetup() in C:\Documents and Settings\Michal\My Documents\Visual Studio 2008\Projects\TGS\TGS.UserAccountControlTest\UserAccountManagerTest.cs:line 69 Does anyone know how to resolve this?

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• Where are config files for class libraries physically located?

  - by BadNinja

  My guess is that this question will fall under the category of "duh", but, nevertheless, I'm confused. When using config files in, for example, a Windows Forms Application, the config file can be found in C:\Program files\CompanyName\ProductName\Application.exe.config. However, with the class library I'm developing I do not see a "ClassLibrary.dll.config" file in the install folder after installing it (in tandem with another project) from Visual Studio. Even though I do not see the file anywhere, retrieving data from it works correctly. Plus, running the following code from a method within the class library returns the path you would expect: C:\Program files\CompanyName\ProductName\ClassLibrary.dll.config. If someone could shed some light on what I'm missing here, that would be really awesome. public static string MyMethod() { Assembly assem = Assembly.GetExecutingAssembly(); Configuration config = ConfigurationManager.OpenExeConfiguration(assem.Location); return "The assembly location was: " + assem.Location + Environment.NewLine + "The config file path was: " + config.FilePath; // Gives me "C:\Program files\CompanyName\ProductName\ClassLibrary.dll.config" }

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• Is there any HTML wysiwyg editor?

  - by martin

  I wonder whether there is any good WYSIWYG editor when it comes to editing complex HTML pages generated from ASP.NET, PHP, GWT or anything else. I've tried a lot of WYSIWYG tools, but after a certain point I always end up with manually editing the HTML source code or CSS to fix different issues. The editors I've tried are never compatible with the ASP.NET/PHP/etc code I'm writing. Edit: I have used Visual Studio for a few years to do ASP.NET development. After a while, it always comes to the point where I can't even open the pages and user controls because they rely on so many things which aren't available in debug time.

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• Python proxy an application

  - by sharvey

  Does anyone know of a library that enables you to run an application inside some kind of sandbox, with virtual mouse and keyboard support. The use case would be to create some kind of visual test runner, that would replay all actions taken during recording and play them back. So far I found autopy, but the fact that it controls the real mouse position is problematic, because it prevents user interaction with other tools (debugger or anything) while running. Cross platform would be nice, but either windows or os x is fine. Python would be ideal but anything that you could create python bindings for would be ok too.

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• asp.net web deployment

  - by CliffC

  i have successful created asp.net web deployment project under visual studio 2008 and everything works fine. However there is a new requirement from my user where they want to browse the location to install the web application instead of using the default install location. Is there anyway to achieve this ? or do i need to use some third party deployment tools? i have tried the sample transformation file on http://www.codeproject.com/KB/install/ChangeVDirWebSetupProject.aspx?fid=295594&fr=1&df=90&mpp=25&noise=3&sort=Position&view=Quick#xx0xx but it only seems to work under vs2005 thanks

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• error about django to connecct newes mssql2008

  - by qq263020776

  I am using django-mssql and SQL Server 2008, but I found that it always errors when I do some commands,for example: python manage.py syncdb the error is below: raise OperationalError(e, "Error opening connection: " + connection_string) ngo.db.backends.sqlserver_ado.dbapi.OperationalError: (com_error(-2147352567, xb7\xa2\xc9\xfa\xd2\xe2\xcd\xe2\xa1\xa3', (0, u'Microsoft OLE DB Provider for L Server', u'[DBNETLIB][ConnectionOpen (Connect()).]SQL Server \u4e0d \u5b58\u 8\u6216\u62d2\u7edd\u8bbf\u95ee\u3002', None, 0, -2147467259), None), 'Error ning connection: PROVIDER=SQLOLEDB;DATA SOURCE=115.238.106.100,60433;Network rary=DBMSSOCN;Initial Catalog=rvdb_1;UID=sa;PWD=xxxx') When I use Microsoft SQL Server Management studio client, I can successfully connect the database. I got some infomation from: http://code.google.com/p/django-mssql/issues/detail?id=76 but I still tried I got wrong and I think the solution provided is wrong.

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• ASP.net getting NT user name returns administrator?

  - by JonH

  This doesnt seem to be an issue with windows XP. But I have an end user (my boss!!!) using windows 7 64 bit... In one of our apps we are grabbing the end user user name via: HttpContext.Current.User.Identity.Name.ToString.Substring (HttpContext.Current.User.Identity.Name.ToString.IndexOf("\") + 1).ToLower For me it is returning the correct user name for instance "jhermiz". When my boss tries getting into the app, it thinks he is Administrator??? Does anyone know of any alternative or why this might be happening? The reason this is an issue is because I use that user name to pull other information... This is visual studio 2003.

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• WPF Statusbar Updates - help, I seem to be going round in circles

  - by David Ward

  I seem to be going round in circles. I have a WPF application that has a main ribbon window with a status bar. When you navigate to a "view" a user control is displayed as the content of the main window. The view has a ViewModel which handles retrieving data from the database and the View's datacontext is set to the ViewModel. What I want is to have the lengthy operation (data retrieval) run on a background thread and whilst it is running the status in the main window to report appropriately. When the background task is complete, the status should revert back to "Ready" (much the same as Visual Studio). How should I wire this together so that I can have the data access code separated out in the ViewModel whilst keeping a responsive UI? I have tried using the BackgroundWorker is various places in the code and I still end up with an unresponsive UI.

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• PreApplicationStartMethod Attribute causes exception

  - by Joop

  Strange thing happening to me with the PreApplicationStartMethod Attribute. I did implement it in my latest project. In the AssemblyInfo.cs I have the following line: [assembly: PreApplicationStartMethod(typeof(MyAssembly.Initializer), "Initialize")] The Type and method look like this: namespace MyAssembly { public static class Initializer { public static void Initialize() { TranslationKeys.Initialize(); } } } When I rebuild my application and load it in the browser I get the following error: The method specified by the PreApplicationStartMethodAttribute on assembly 'MyWebApp, Version=0.0.1.0, Culture=neutral, PublicKeyToken=null' cannot be resolved. Type: 'MyAssembly.Initializer', MethodName: 'Initialize'. Verify that the type is public and the method is public and static (Shared in Visual Basic). I really have no idea what the problem is.

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• WPF 4.0 Font Rendering Issue

  - by Tom Allen

  I'm getting a weird rendering issue with WPF 4 applications in the way they render some of the text as it's stretching it and making it very narrow. .net 3.5: .net 4.0: At first I thought it could be a problem with the font, but I'm also seeing the same problem in the Blend 4 beta: I'm running XP SP3, Visual Studio 2010 Professional and everything's as up to date as it can be. I'm not noticing any such problems with Silverlight 4 apps I have built on the same machine... Anyone else seen this or know why it's happening?

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• Mouse interaction in ListBoxItem children (WPF)

  - by absence

  I have a ListBox with an ItemTemplate that contains a control that interacts with the mouse. This interfers with the selection functionality of the ListBox, i.e. clicking a control does not select the item. This is because ListBoxItem sets the Handled property of the mouse event to true in OnMouseLeftButtonDown. I tried the following protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e) { base.OnMouseLeftButtonDown(e); e.Handled = false; } but the ListBoxItem “takes over” the mouse and prevents the control from doing its own interaction. Then I had another idea protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e) { base.OnMouseLeftButtonDown(e); ((ListBoxItem)VisualTreeHelper.GetParent(VisualTreeHelper.GetParent(VisualTreeHelper.GetParent(this)))).IsSelected = true; } which actually works, but feels more like an ugly kludge than an elegant solution. Are there any better solutions that don't rely on the exact contents of the visual tree?

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• How do I check if a swf file loaded correctly since put_Movie always returns S_OK?

  - by Tim

  I am using the latest flash player and have a swf file served locally from my dev machine. In one container test app I am able to play the swf and make calls to it, but in my "Real" application the same code path results in com errors (basically it looks like the swf isn;' loading properly) Additionally this is made more challenging because no matter what nonsense I put in the call to put_Movie() the return is ALWAYS S_OK. This is confusing. How am I supposed to determine if the swf file loaded and is working? As a follow-on, what would cause a swf file (the same one) not to load in a different app? The code paths are the same (from what I can tell). Obviousl something is going on, but I am not sure what. So, I guess 2 questions How to know when swf file doesn't load right Why might it fail in a different container application? I am using ATL in Visual studio 2008, latest flash, MS Vista Thanks

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• Targetting DataTemplate for only on certain views

  - by huseyint

  I have a DataTemplate inside a global/shared ResourceDictionary like this which targets a DataType: <DataTemplate DataType="{x:Type foo:Bar}"> <!-- My DataTemplate visual tree goes here... --> </DataTemplate> This DataTemplate replaces my all foo:Bar types on all my Views (UserControls/Windows). What I want to do is to apply this template to only certain views, keeping the other views are not affected by this DataTemplate. I can copy this DataTemplate to Resources sections of each of these view, but I don't want to copy/paste the contents of the DataTemplate which would result in maintenance headaches.

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