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• What is the best way to detect if my page needs saving - ussing WPF MVVM

  - by Eli Perpinyal

  I have an application where you can open many different items (like in excel you can open many different tabs) If an item or "tab" is modified I want to detect the changes and allow the use to save or prompt if the user closes without saving. Maybe enable/disabling save button when a save is available/not available. I am using c# WPF with MVVM pattern.

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• WPF - play default windows sound when TextBox cannot recieve any more input

  - by devdigital

  Hi, I'd like the default windows system sound to play when a user attempts to enter text into a WPF TextBox which has already reached it's MaxLength value. How is this possible?

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• C# WPF MAF Add-In interaction between themselves

  - by Ronny

  Hi, I would like create a very simple Paint application using MAF on WPF. The Add Ins I would like to create are: Main Image Processor - Shown the current paint Tool Box - The user can select some types of drawings tools Layers - The user can select the layers to display, delete layers and select on which layer to work on the question is: How I can interact between the different Add-Ins without using the host? Thanks, Ronny

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• Is there a MergedGradientBrush in wpf?

  - by AKRamkumar

  Suppose I had two brushes. One that was a linear gradient brush that was from Dark to light One was a radial brush that went from Dark to light. How could I merge the brushes so that when I apply them, I can apply both at once. EG Check this: 1) http://www.codeproject.com/KB/vista/WindowsVistaRenderer/VistaRenderer4.gif 2) http://www.codeproject.com/KB/vista/WindowsVistaRenderer/VistaRenderer5.gif How could I (In WPF/XAML) merge both into one gradient and then refer to that? (This is Mr. Menendez's Images from Codeproject)

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• What makes WPF application startup slow?

  - by Andy

  I noticed that WPF application startup is sometimes pretty slow. Does anybody know if the the cause is the elements initialization or DLLs loading or something else?

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• Disable Windows 7 touch animation in WPF

  - by Ian Oakes

  In Windows 7 when you touch the screen there is a short animation that occurs at the touch point. In my WPF app I want to display my own touch points, without showing the one supplied by Windows. Any ideas on how to disable them in an app?

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• Loading page in WPF

  - by Shift

  Guys, I have a basic WPF application. Contains App.xaml as always and a Mainwindows.xaml. I've created also some pages like page1/2/3. I want to load for example page1.xaml in mainwindows.xaml. Is this possible? And also want to close it so the content of mainwindow.xaml will stay in there. I dont want this to be a navigation application with the left/right arrpws at the top.

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• Publishing a WPF application in VS 2008 triggers "the server unexpectedly closed the connection"

  - by Meli

  I'm using Windows Server, IIS 6.0 and VS 2008 Professional. When I click "Publish WPF application" I get "the server unexpectedly closed the connection". Any ideas?

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• How to apply style in WPF Controls ?

  - by Amit

  Hello All, I am beginner on WPF and need your help. Problem: I have 4 buttons on the form and need to apply 2 different style on pair of 2 buttons. Is there any way we can achive this ? please provide me sample if possible... Thanks in advance...

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• WPF Textbox Preview events related

  - by Nitin Chaudhari

  I have a WPF textbox, and perform the following actions Enter text as "12345" Move cursor between 3 and 4 (using arrow or mouseclick) Enter 0 (so Text is now "123045") Which event/eventargs can tell me that 0 was typed at location 4. I need to know this at Preview level so that I can reject the character 0 based on the prefixed and suffixed digits.

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• WPF Window : sizechanged event fires twice

  - by user279244

  I have a WPF Window loaded. But on event of sizeChanged, it fires twice. May I know why? Also, I have tried adding 'e.handled = true'

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• Choosing between WPF and Silverlight

  - by user43498

  Hi, We have an existing web application developed using ASP.NET/Ajax We are planning to move it to either WPF or Silverlight. Can someone please compare these 2 technologies with respect to productivity,performance, maintainability,trade-offs, their pros and cons etc ? Thanks for reading.

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• WPF MediaElement video playback tearing

  - by GeekyMonkey

  I'm trying to use the MediaElement control in WPF to play back video. It works great in Vista, but when I run it on an XP machine I get tearing in the display. It looks as if it's not using the vertical synch, and just updating the screen mid-draw. Anyone know how to fix this problem?

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• WPF application

  - by Senthilkumar

  Hi I am new to WPF.. Can any one tell what is the difference between standalone applications and XAML browser applications (XBAPs) and how it differs in handling navigation and other stuff..

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• WPF ResourceDictionaries

  - by William

  I have a wpf tab control which is highly customized through styles. I have referenced those styles in a resourcedictionary "TabControlResources". How do I reference "TabControlResources" in another resourcedictionary?. I have a resourcedictionary called "MainViewResources" and I would like to reference the tab style from my "TabControlResources" in that resourcedictionary. Thanks in advance.

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• WPF: Microsoft_Windows_Themes not found

  - by Martin

  I am getting this error in my WPF app: The type 'Microsoft_Windows_Themes:ScrollChrome' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built. Any idea?

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• WPF/Winform Time Range Selector

  - by wonea

  Hello, I'm looking for a decent WPF or Winform time range selector, much like a home central heating system, where a time range is selectable. http://lhill.com.au/l%20hill%20web%20page%20pictures/time%20clock%202.jpg Is there any GUI libraries or examples available to fulfill this need?

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• WPF label counterpart for HTML "for" attribute

  - by alex2k8

  Is there some attribute in WPF that I can add to element, so when I click it the target control get focus? The closest thing I have found is 'Target', but it works only with access keys and clicking it has no effect.

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• Color of OverFlowButton in WPF toolbar

  - by antongladchenko

  There was a problem. When I change the background color of WPF toolbar Overflow Button in the right corner does not change color. How to fix it? Example:

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• Custom button template in wpf

  - by Archana R

  Hello, I want to create a simple button template with an image and text inside it. But i want to keep the System button's look and feel. Can anyone tell me step by step how to create it? P.S. : I have already tried it with CustomControl in wpf and BasedOn property.

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• WPF ToolBar: how to customize appearance (remove dots on the left)

  - by Nike

  I use ToolBar for my WPF application. As I understand, there is no easy way to make it floating. I just want to remove element which I don't want to be displayed: several dots in the left side of ToolBar. Is there any Properties to customize view of ToolBar? Or, maybe, it's possible to redefine a ToolBar Template?

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• wpf mvvm client server application

  - by jim

  First of all i must say i am new to wpf and mvvm. I want to develop a client-server application(clients send info to the server and the serer notifies one or more of them..consider something like yahoo messenger(some user changes his status..sends info to the server and the sever notifies his friends and changes to their UI are made) My question is: does mvvm suits well with this kind of application?

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• MouseEvent on a Rowdefiniftion within a WPF Grid

  - by Organ Grinding Monkey

  Hi I am trying to determine which row (RowDefinition) my mouse is over within a WPF grid. I have tried adding the MouseEnter event to the RowDefinition but the event doesn't fire, the Event does fire on the Grid itself but that doesn't help as I need the name of the row the mouse is currently over. Thanks in advance.

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• WPF Application Deployment Problem

  - by deep

  i created a WPF application and i added a setup solution and i did everything to deploy the project and i got my setup.msi i installed it in my system, The problem is my application is running in task manager, but i cant see my application any where in desktop or start menu,but tast manager process show that my application is running. whats the problem??

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• Insert text into WPF textbox at caret position

  - by Roice

  How can I insert text into a WPF textbox at caret position? What am I missing? In Win32 you could use CEdit::ReplaceSel(). It should work as if the Paste() command was invoked. But I want to avoid using the clipboard.

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