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• 'System.OutOfMemoryException' was thrown

  - by Asim Sajjad

  While Compiling the WPF Application for many times in a day it give following error 'Exception of type 'System.OutOfMemoryException' was thrown.' Can anyone know why this error occured and how to remove that error. But if visual studion is restarted then there is no such problem. thanks in advance

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• DataStateBehavior for Enum instead of bool? String?

  - by firoso

  Is there an easy way in WPF to bind VisualStates to enum values? Kinda like DataStateBehavior, but for an Enum?

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• can ServiceLocator.Current.GetInstance return null?

  - by mauricio076

  I have this piece of code (or similar) in many of our views: private IEventAggregator eventAggregator; Constructor() { eventAggregator = ServiceLocator.Current.GetInstance<IEventAggregator>(); ... } I read from this post that ServiceLocator.Current can throw NullReferenceException (bad thing on a constructor) but I was wondering if the GetInstance<() method can return null (or some other inconsistent object) making eventAggregator dangerous to use later in other methods. NOTE: I'm quite new to MVVM and WPF

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• Progress bar in data grid view

  - by Pat

  Is there a way to have a progress bar in a cell in a DataGridView? At design time, you can add a TextBox, Button, Image, Link, ComboBox, or CheckBox, but not a ProgessBar. Is there a better control in WPF that will allow this?

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• What framework for MVVM should I use?

  - by Rangel

  I am developing an application with the MVVM model, but I have reached a point where I need to choose which framework to use. Among the possible options are: MVVM Toolkit MVVM Foundation WPF Application Framework (WAF) Light MVVM Caliburn Cinch Prism In your experience, which is better?

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• Differences between App.Config and Web.Config?

  - by Jack McG

  when building a desktop app in wpf can you read documentation of problems and safely subsititute 'app.config' when people's answer's refer to 'web.config'? if so are there any glaring GOTCHAS you have to look out for? tnx

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• FlowDocument Repeating table header

  - by Aldo

  Hi How can I know if am at the end of a page and insert a break? I'm trying to print a wpf document with repeated header. Regards

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• advantages of WPFbrowser application over asp.net and viceversa for web development

  - by Meli

  I'm not familiar with WPF but I've seen things I like about it for web development. I wonder which advantages has developing a WPFbrowser application over asp.net (webforms/MVC) and viceversa. are there things you can do or use in asp.net you can't do in a WPFbroser application?

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• Access GridViewColumnHeader object from GridViewColumn

  - by Marco

  Hi, is it possible in wpf to access the header of a gridviewcolumn as gridviewcolumnheader? I have an object: GridViewColumn column; But the "Header" property just returns a string (header text) not the "real" header object. Can anyone help my?

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• Weird behaviour in Drag drop

  - by Prasanth

  Im using drag drop to treeView items in a tree in a WPF application. There is some unexpected behaviour when I drag a node from the bottom edge and drag it to some other node. The node that I drag is not getting moved, but the node immediately below it is. Please let me know if you have any thoughts on this or experienced this before. Thanks in advance

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• Is there a performance disadvantage for WPF''s Control properties?

  - by Joan Venge

  I am learning WPF and it seems like some properties like Content are of type Object. When you have a very complex UI with 1000s of controls, would this be a problem with boxing, etc? I see that this provides a lot of power (having Content to take anything), but just thought I should ask people's opinions about this.

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• Change color of CheckboxColumn if checked

  - by user896692

  Searched a lot about this problem but never found a answer, that solved it. I´ve got the following CheckboxColumn in a WPF datagrid: <DataGridCheckBoxColumn Header="Erledigt" Binding="{Binding Path=erledigt}" /> The variable erledigt contains 0 or 1. Now I want, that if the Checkbox is checked, the cellbackground is green. Hopelessly searched for a checked property. How can I manage this?

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• getting user input via console in c#

  - by every_answer_gets_a_point

  i have this code in a button in a wpf in c#: private void button1_Click(object sender, RoutedEventArgs e) { Console.Write("What is your name?: "); Console.Write("Hello, {0}! ", Console.ReadLine()); Console.WriteLine("Welcome to the C# Station Tutorial!"); } when i click the button, nothing happens. why doesn't the console appear?

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• Efficient pixel shader sum of all pixels

  - by luvieere

  How can I efficiently calculate the sum of all pixels in an image, by using a HSLS pixel shader? I'm interested in Pixel Shader 2.0, that I could invoke as a WPF shader effect.

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• "are you missing a using directive or an assembly reference?" but the namespace and reference are correct

  - by Filip

  Hi, I've got the following error when builing my project. The type or namespace name 'OvuMenu' could not be found (are you missing a using directive or an assembly reference?) But I have put a using in my code and a reference to the dll. It is a WPF application that exists of 3 projects. I checked the references, even intellisense works when I put the using directive in the page. thanks, Filip

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• What should be owner type of a routed command?

  - by viky

  I am using wpf Custom Commands. While writing a custom Command, you need to define the owner type. Description says that it is the type that is registering the command. I was seeing some sample and there the Owner type was UIElement and in some others it was the class name itself. Whats the difference? What should be the owner type?

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• Binding DynamicObject to a DataGrid with automatic column generation?

  - by SeveQ

  I'm still experimenting with DynamicObjects. Now I need some information: I'm trying to bind an object inheriting from DynamicObject to a WPF DataGrid (not Silverlight). How do I get the DataGrid to automatically create its columns from the available public properties of the object that are typically generated at runtime? Is that possible actually?

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• What is the difference between Visual Studio and Expression Studio?

  - by xarzu

  I have visual Studio 2008. I have noticed that I cam make WPF applications with Visual Studio. Does this mean that it can do the work that Expression Studio does? I am going to install Visual Studio 2010. Does this do away with the necessity of Expression Studio?

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• Change resource file on the file

  - by Imran

  I woulld like to localize my WPF application with resource files. It good technics. But I have requirement to give ability to end user to change some localization information (for example some word traslation). It means change information in the resourse files on the fly (in run time). Is it possible ?

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• How to Implement Automatic paging in RichTextBox

  - by Aamir Khurshid

  i want such a RichTextBox that have paging instead of Scrollbar,if Document text cannot fit into the RichTextbox it will move to the next page instead of adding scroll ,How can i implement this functionality in WPF RichtextBox ,i have buttons Prev ,bext to move forward and back, Regards, Aamir

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• How do I use the OpenFileDialog class such that it opens on the Network area as default?

  - by xarzu

  How do I use the OpenFileDialog class (in C#, WPF etc.) such that it opens on the Network area as default? This does not work: OpenFileDialog openFileDialog1 = new OpenFileDialog(); openFileDialog1.InitialDirectory = "Network"; I also tried having "\" as an InitialDirectory and that did not work. I also tried having "\\" as an InitialDirectory and that did not work either.

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• Adding a custom installer window .msi .net wut

  - by Barack Obama

  I don't know jack shit about the .msi thing with .NET but can I add a custom window to the process that saves the results of the WPF window or winform to the install folder as a .xml file etc.?

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• Change resource file on the fly

  - by Imran

  I woulld like to localize my WPF application with resource files. It good technics. But I have requirement to give ability to end user to change some localization information (for example some word traslation). It means change information in the resourse files on the fly (in run time). Is it possible ?

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• Sort algorithm with fewest number of operations

  - by luvieere

  What is the sort algorithm with fewest number of operations? I need to implement it in HLSL as part of a pixel shader effect v2.0 for WPF, so it needs to have a really small number of operations, considering Pixel Shader's limitations. I need to sort 9 values, specifically the current pixel and its neighbors.

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• Getting started with Prism (Ent Lib v5) and building an app framework

  - by Jason

  Can anyone point me to any useful examples of an application framework being built using the newly released Enterprise Library 5? I have previously used v4.1 and after downloading the source for v5 and building - I'm not understanding how to integrate it with a WPF app - i.e. there doesn't appear to be any UnityBootstrapper class. Thanks, Jason

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