I'm trying to use a MultiBinding as the ItemsSource for a ListBox, and I want to bind a couple of collections to the MultiBinding. The collections aren't populated until after the host control (a derivation of Page) has already been instantiated. Just after being constructed, I call a method that sets up some of the data for the Page, ...
I am working on a WPF application which has a treeview that represents an XML. I load the XML on to the XDocument, then bind the TreeView to this object. Now using the MVVM pattern, I want to provide a ViewModel on top of XDocument. What are some of the things that I should implement in the ViewModel class. I am thinking of, Routed...
My problem is: I have a Canvas which covers part of my Window. The Opacity of the canvas is set to less than 1, i.e. I can view the controls under the Canvas. What I would like to do is place a control, any control, say a Button, on the canvas and not have that Button semitransparent. Is this possible using WPF? ...
I feel like I'm missing a fairly fundamental concept to WPF when it comes to databinding, but I can't seem to find the right combination of Google keywords to locate what I'm after, so maybe the SO Community can help. :) I've got a WPF usercontrol that needs to databind to two separate objects in order to display properly. Both objects ...
What is the best way to add "copy to clipboard" functionality to a ListView control in WPF? I tried adding an ApplicationCommands.Copy to either the ListView ContextMenu or the ListViewItem ContextMenu, but the command remains disabled. Thanks, Peter Here is an xaml sample of one of my attempts... <Window.Resources> <ContextMenu...
I have a unique development situation and would like some input from others. I have a situation where I need to load loose xaml files within a rich client application. A given loose xaml file may have references to an assembly not currently loaded in memory so the referenced assembly is loaded before the loading the loose xaml. The loo...
Does anyone know how to databind the .Source property of the WebBrowser in WPF ( 3.5SP1 )? I have a listview that I want to have a small WebBrowser on the left, and content on the right, and to databind the source of each WebBrowser with the URI in each object bound to the list item. This is what I have as a proof of concept so far, but...
Earlier today I was hunting down a very weird bug... I finally traced it down to what seems to be causing the problem. The original report can be found here: original question The details have changed enough to warrant a new question. It would seem my application sometimes, NOT ALL OF THE TIME, freezes when it reaches the following LI...
I have a somewhat complex WPF application which seems to be 'hanging' or getting stuck in a Wait call when trying to use the dispatcher to invoke a call on the UI thread. The general process is: Handle the click event on a button Create a new thread (STA) which: creates a new instance of the presenter and UI, then calls the method Dis...
How can I restrict the list of drive letters displayed by the WPF SaveFileDialog? ...
I'm having real difficulties with XAML files in Silverlight since they get very big very fast when using Blend. It just becomes a wall of text after only a handful of controls are added and animated. I'm hoping a better vesion of Blend will come out soon, so that our designers will never even have to see XAML. For now, though, that is n...
I'm looking for an example of how to load an image from file and print it on a page using WPF. I'm having a hard time finding good information about WPF printing. ...
I'm using System.Windows.SplashScreen to add a splash screen to my WinForms app (it has a lot of WPF controls, but the 'main window' is still a System.Windows.Forms.Form object). When the splash screen closes the whole app goes as well. Can I stop it taking the whole app with it? ...
Just wondering what people think is the best practice when implementing an IValueConverter which does not have a meaningfull ConvertBack implementation (or one that is only to be used as OneWay)? Should it throw (and in that case what exception), return null or return some default value. Thoughts? ...
Hi, I have a style defined in App.xaml file "tabControlStyle". How can I assign this style to my dynamically created TabItem control. TabItem item = new TabItem(); item.Header = String.Format("Item {0}", i); documentTab.Items.Add(item); ...
I created a grid in procedural code on my WPF page. Now I want to reference that grid. Grid grid = (Grid)This.FindName("myGridName") does not work. Ideas? ...
I have a Grid in WPF. The Grid has a transparent background (necessary) and each of the cells potentially has a different colored solid background, or maybe no background. When I put arbitrary content in these cells, when two adjacent cells both have colored backgrounds (same or different color, it doesn't matter) there is often (and unp...
I am unsure if this is even possible, but I thought I would ask. First off, for my purposes, I require this to work in the C# portion and not the XAML part. This is what I have and it works: public partial class MyClass1 : Window { public MyClass2 MyClass2Object { get; set; } public MyClass1() { InitializeCompo...
I have this ListBox which is bound to an ObservableCollection. Each object in the list implements an interface called ISelectable public interface ISelectable : INotifyPropertyChanged { event EventHandler IsSelected; bool Selected { get; set; } string DisplayText { get; } } I want to keep track of which object is selected...
In my Silverlight app I want a multi-line text box to expand every time the user hits Enter. The difficult part is how to calculate the correct height based on the number of text lines. I have tried the following but the textbox becomes too small: box.Height = box.FontSize*lineCount + box.Padding.Top + box.Padding.Bottom + box.BorderT...