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• Multithreading WPF application, communication with service

  - by Cicik

  Hello, I have WPF application which communicates with WCF service(service is Publisher and WPF application is Subscriber). I need multiple subscriptions to service from one application with callbacks to run in multiple threads. In each thread, application will subscribe to service and on callback(in same thread) save values to DB. Please can you give me some idea how to solve this? Thanks

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• DataForm Control like in SL3 for WPF

  - by TS

  Hi Im looking for a control like the DataForm which is new in Silverlight 3 for handling the whole binding and validation logic (declarativly with property attributes etc) for WPF. I always thout of SL as a subset of WPF but there seems to bee no DataForm control, at least not in the System.Windows.Controls namespace like in SL (I know SL uses another CLR) Have i overlooked something? Thanks for help! ts

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• Wpf: Performance Issue

  - by viky

  I am working on a wpf application. In which I am working with a TreeView, each node represents different datatypes, these datatypes are having properties defined and using data template to show their properties. My application reads from xml and create tree accordingly. My problem is that when I load it, it is too slow, I want to know about the tricks that will help me to improve performance of my(any) wpf application.

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• Wpf: Image Control does not support .TGA files

  - by viky

  In my application I am using Images, these images can be .tga(Targa Graphic) file as well, when I am creating instance of BitmapImage using .tga file, it throws exception saying "No imaging component suitable to complete this operation was found.". Is there any other way to work with .tga file in wpf? How can I use these(.tga) files just like any other .jpg(Image file) in wpf?

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• how to load wpf usercontrol in MVVM pattern

  - by Anish

  Hi, I'm creating a wpf user control which is in mvvm pattern. So we have : view(with no code in codebehind file), viewmodel,model,dataaccess files. I have MainWindow.xaml as a view file, which I need to bind with MainWindowModel.cs. Usually, in a a wpf application we can do this with onStartUp event in App.xaml file. But in user control, as we do not have App.xaml...How do I achieve it ? Please help :(...Thanks in Advance !!!

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• How to print long bill in WPF

  - by RAJ K

  I have a WPF application for product purchase billing. My client wants that app should be able to bill and print upto 1-99 products at once. they use bill printer (mini size printer) for billing. How I can achieve this in WPF C#. Any code or link would be helpful. Thank you...

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• display Icon in wpf Image

  - by irco

  I have a wpf application that needs to extract the icon off of an executable I found here that i can do this Icon ico = Icon.ExtractAssociatedIcon(theProcess.MainModule.FileName); but when I try to set the source of a wpf Image I get "Cannot implicitly convert type 'System.Drawing.Icon' to 'System.Windows.Media.ImageSource' Any suggestions ?

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• Wpf- Is there a worth while way to add richtextbox capabilities (Bold, Italics, Underline, Strike-Th

  - by highone

  I am writing a text editor and had planned on using the richtextbox control however, the richtextbox's performance is abysmal. On even small documents the wpf richtextbox lags if you hold a key down. I do not need all of the features of the wpf richtextbox, but I do need rtf support. How can I implement this?

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• Why change from WPF to Silverlight 4?

  - by stiank81

  I'm working on an application we made WPF instead of Silverlight as we wanted a full blown desktop application with the whole unique feeling and advantages that gives. However, with the announcement of Silverlight 4 I hear there is a buzz about Silverlight mostly being the preferred choice also for desktop applications. So; why should I consider moving my WPF application to Silverlight 4 - given that I still want a desktop application?

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• Good NumericUpDown equivalent in WPF?

  - by chaiguy1337

  I'm looking for a simple NumericUpDown (a.k.a. number spinner) control in WPF. This seems to be another lacking control in WPF. There must be some existing ones out there and I don't like to re-invent the wheel.

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• VisualStateManager for WPF and Silverlight

  - by Allen Ho

  When you do code like VisualStates.GoToState(this, useTransitions, VisualStates.StateNormal); I believe this code will only work for Silverlight apps. will this affect the way a WPF app works... Trying to incorportae controls that can be shared between both silverlight and WPF apps and was just wondering what were the main pitfalls were...

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• One-Click Application Moving from WinForms to WPF

  - by Tyler

  I have a WinForms app that I recently re-wrote in WPF and I need to release to my end users. I'd like to be able to have the users go to the ClickOnce install point for the WPF application and have their WinForm application removed so they don't have both on their machine What's the best way (read: easiest for users) of accomplishing this? I have thought about creating an prereq command line app to detect the old version and uninstall, but would like to avoid having to write an something like that where it only get's run once.

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• Wpf usercontrol with parameterised constructor

  - by Miral

  Hi, We are using Microsoft Unity and we are using dependency injection and so we have parametrised constructor. So now how to call such a usercontrol in the main window. I see the below error when i added the usercontrol in xaml. "It does not define a public parameterless constructor or a type converter" I have added the usercontrol in XAML as below xmlns:usrRefundArrivalProcessor="Ttl.Refunds.Wpf.Dashboad.Application.Usercontrols;assembly=Ttl.Refunds.Wpf.Dashboad.Application"

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• WPF image zooming

  - by anwar

  WPF: What is the best way to implement Zoom In and Zoom Out option for an Image inside ScrollViewer in WPF at runtime and also other alternative methods for the same Please provide sample code and suggest links where I can find sample code and more info about various ways to Zoom the image. Regards, Anwar

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• WPF PropertyGrid - adding support for collections

  - by akjoshi

  Hi, I am working on wpf propertygrid(PG) control and I want the PG to support collection type(IList, ObservableCollection etc.) properties. I am bit confused on how to keep track of selected item(of that collection) and pass that to client. Any ideas? If the solution makes use of the Open Source WPF PropertyGrid (http://www.codeplex.com/wpg) I will implement the changes /additions back into the control.

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• Customly chromed Windows in wpf

  - by Alxandr

  I've tried creating a customly chromed window in wpf using WindowStyle None, and AllowsTransparency True, however, when I maximize the window it covers the entire screen (and goes beond it's edges, it also hides the Windows-bar at the bottom of my screen, just like a game in fullscreen). How can I make the behaviour like a normal window, but with my own customly made wpf-chrome?

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• Visual Studio 2008: Setting the vertical separation to default in wpf designer

  - by Nils

  I favour the vertical separation over the horizontal separation in VS2008 wpf designer. But after deleting the .suo (fresh checkout, new project, etc.) this setting is gone. Is there a way to tell visual studio to default to the vertical separation instead of the horizontal for wpf designer ? I can not find anything in the "options". Did I miss this setting?

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• Play RTSP/MMS/Http live video feeds in WPF

  - by James Cadd

  I'd like to pull a live video feed into WPF but the MediaElement doesn't appear to support these protocols. An example video stream is here (BP oil leak live feed): http://mfile.akamai.com/97892/live/reflector:45683.asx?bkup=45684 Are there any solutions for playing live streaming formats in WPF?

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• WPF Bind User Control Coordinates

  - by morsanu

  Another beginner WPF question from me :) Ok, so I have a User Control added to a Canvas. In another area of the application I have two TextBoxes that will get 2 values : X and Y. I need a two-way binding between the user control's top left corner coordinates and those 2 textboxes. I don't mind implementing a Converter or doing some calculations, but I need a push in the right direction from a more experienced WPF developer.

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• WPF - Sample App, Step by Step

  - by Randy Minder

  I'm new to WPF development. Is anyone aware of a site or resource that builds a somewhat simple WPF application step by step, with ample explanation and/or documentation?

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• WPF Hide on Close?

  - by Petoj

  How do i do this in wpf VB.NET Private Sub FrmSettings_FormClosing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.FormClosing e.Cancel = (e.CloseReason = Forms.CloseReason.UserClosing) Me.Hide() End Sub c# private void FrmSettings_FormClosing(object sender, System.Windows.Forms.FormClosingEventArgs e) { e.Cancel = (e.CloseReason == Forms.CloseReason.UserClosing); this.Hide(); } as wpf's Close event just gives me e.Cancel and no closereason :(

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• What did you find hardest to understand when learning WPF

  - by Ian Ringrose

  What bit of WPF did you find hardest to understand or misunderstood for longest and how did you understand it in the end (please provide links etc). (I am asking this to guide my learning of WPF)

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• Column aligment in WPF datagrid

  - by Prashant

  Hi all, I'm using WPF datagrid which is bundled in WPF toolkit... the problem is I'm not able to align some column data to center Please help me guys

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• Button in a WPF ListItem

  - by Joel Martinez

  Hi, I'm a bit new to WPF. I am working on a list UI where each item in the list will have a set of corresponding buttons to operate on that particular data item. Coming from a web background, I normally would have bound the value into a hidden element in that particular list item or something. However, I just need to find the corresponding technique in this WPF world :-)

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• WPF: Is there a built-in TreeGrid / TreeListView?

  - by John Gietzen

  I need something just like this: But, I need it in WPF. is this something that is built in, or am I going to have to build it myself? I assume it has to be somewhere in the framework, since VS2010 is build in WPF.

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