wpf

WPF ComboBox "option group (optGroup)" type behaviour

I want to have a wpf combobox that displays the dropdown list box with the options grouped under a heading like the <optgroup> behaviour in html. Has anyone seem something like this done before? ...

Any good tutorials for building composite patterns?

Hi I'm making a game of soccer in WPF with C#. A composite pattern sounds like a good idea to control multiple players properties, and such. This is nothing to do with event handlers. So if there are any good tutorials that anyone knows of - thanks. ...

Why the content of the pure IEnumerable is invisible for WPF DataGrid?

Let's say I have a datagrid with itemsource binded to property Collection, which is for example IEnumerable. Of course I wrote appropriate getter and setter for it. Now, when I assign to this property (Collection) just IEnumerable (as the result of some method), like: Collection = FooMethod(); // FooMethod returns IEnumerable<MyClass> ...

How to make a WPF window as a child to C# Winfoms MDI

Hi, Is it possible to make a WPF window as a child to C# MDI winform. If yes please give me the code. If no please give me the alternate solution. Thank you, Shashi ...

Sending arguments to an app-instance that resides in another process

I have a single-instance app (c#, WPF, .net3.51). The check if the app is already instantiated is done via a Mutex. If the app is already running, I open a new window from within the already opened app-instance. This works fine so far. However due to an app extension, I now must send the e.Args (or at least the first string of it) to t...

How to add Window border to WPF usercontrol?

Hi, I have custom usercontrol WPF, that I need to display it as WPF Window (with title bar and all other window features) ...

[Solved]WPF C# Expand actual TreeNode invalid cast

Hi, i have a TreeView which is binded trough a HierarchicalDataTemplate. Im listing there a List which contains a list of a directories and files. private void getDirectoryList() { using (FileOperations fileOP = new FileOperations()) { this.DokumentBrowser.ItemsSource = fileOP.list_directory(rpath); //Li...

Routed Events in WPF - using an Action delegate

Hi, I'm developing a user control, and wish to use a routed event. I notice that there are two delegates provided - RoutedEventHandler, and RoutedPropertyChangedEventHandler. The first that doesn't pass along any information, and the second that takes the old and new values of a property change. However, I need to pass just a single p...

Reading Assembly version information of WPF application

Hi, I am reading version information of my wpf application, but I am not getting the correct version as I have write in AssemblyInfo.cs file. In my file there is [assembly: AssemblyVersion("0.1.001")] [assembly: AssemblyFileVersion("0.0.001")] I am reading version information using this code System.Reflection.Assembly.GetExecutingAs...

WPF - Detect when UserControl is not visible anymore and prompt user

So, I have a class, which goes as follows: public class EditorUserControl : UserControl { public EditorUserControl() : base() { this.IsVisibleChanged += new DependencyPropertyChangedEventHandler( EditorUserControl_IsVisibleChanged); } void EditorUserControl_IsVisibleChanged( object s...

WPF TabControl Memory issues

If I have the follow TabControl and everything works properly and when I switch to the second tabitem it just shows without no issues. <TabControl> <TabItem> //datagrid </TabItem> <TabItem> //datagrid2 </TabItem> <TabControl> But if i have this xaml, when i click the second tabitem the memory goes out of control <TabControl> ...

WebBrowser update problem

Hi, I am using the WPF WebBrowser control for displaying data in google maps. What I am trying to achieve is to listen to mousemove events on an other wpf control an pass this data to the webbrowser control via InvokeScript. in this javascript method i set the innerHTML of an label to the passed value. but the value gets only updated fo...

Using CrystalReport and WPF, C#

Hi, Thanks for read my Question.. I have a Report on Crystal Report, and I am using CrystalReport for VS2010, VS2010, SQl Server 2008 and WPF targeting .Net Framework 4.0. The question is.. I am allready made a Report and I have and App on WPF in which I need to call, embed or whatever it is take to show the report. How could I ? Th...

C#: How can i modify selected text/wrap content etc?

what i want to acheive is similar to the editor in stackoverflow. where if i press bold, it will wrap my selected text with some text (in this case **) ...

WPF: Can i use the system's default save/new/etc file icons? & How

what i refer to by "system's default icons" are the icons i see in say apps like office. the open/new/save icons. i wonder if i can somehow reference these? because they seem like a standard icon. or do i have to find those icons from the net and put them into my apps? ...

Where can i find the default WPF Control templates?

As per this MSDN link, There is no way to replace only part of the visual tree of a control; to change the visual tree of a control you must set the Template property of the control to its new and complete ControlTemplate . I am trying to disable the click behaviour of GridViewColumnHeader ( I need to remove some trigge...

C#: Adding text to where cursor is

i want to handle the tab keypress in such a way that if there is no selected text, add 4 spaces at cursor position. if there is selected text, i want to add 4 spaces at the start of each selected lines. something like what ide's like visual studio does. how do i do this? i am using WPF/C# ...

WPF DataGrid Control Template

I am trying to customize the WPF 4.0 DataGrid and need a listing of its control template (also the control template for the nested DataGridColumnHeadersPresenter - PART_ColumnHeadersPresenter). I found this link with provides many control templates, but DataGrid is missing from the list! Is there any place where the control template for ...

Can I get the Type() of a bound object in C#/WPF (even if the bound value is null)?

I have a binding to an unknown source. All I have is the binding. I have no other way of looking at the bound object. I need to figure out the Type for the bound object, even if the value is null (this is where my problem is). I was evaluating the binding by binding to an object and then using the object as a way to get the Type, but I ...

WPF/Silverlight Tree - How do I make all nodes from a tree to be aligned?

Hi guys, What do I have to do with a Tree in WPF/Silverlight, to have all nodes aligned ar the same level? I mean I need the root and all childs to be align at the same distance from the left side of the screen. Is that possible? Actually I am using a Telerik Silverlight RadTreeView. Any help is welcomed, Thanks ...