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Questions tagged [freezable]

A WPF class which defines an object that has a modifiable state and a read-only (frozen) state. Classes that derive from Freezable provide detailed change notification, can be made immutable, and can clone themselves.

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using storyboard to raise a custom command. Error: Storyboard Not freezable

I have having issues with a storyboard that is complaining about being unfreezable. There are alot of links on google about this, however I am not sure from reading that information how I can achieve what I want. (ie pretty much just execute a…
Dessus
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WPF frozen BitmapImage not showing

I am using a viewmodel bound to an image property on the UI and the viewmodel contains an ImageSource property. I set that property using the following function private BitmapImage GetImageFromUri(Uri urisource) { if (urisource ==…
ak3nat0n
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How do I set the binding of a child proxy relative to the DataContext?

I looked at a lot of topics, but they all in one way or another are related to the definition of the DataContext of UI elements. I have a task that requires a completely different approach. And no matter how much I puzzled over the decision, I could…
EldHasp
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TaskbarItemInfo.Overlay binding to a DrawingImage instance stops image updates by code

I'm trying to use a GeometryDrawing with a dynamic content as source for TaskbarItemInfo.Overlay. The image in code below is based on a GeometryDrawing which Brush is continuously updated by code. 1/ For test purpose, a copy of the image with…
mins
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I want to make a popup which does not allows user to close browser until popup closes

I want to make popup which freezes the browser until the popup is closed. But I am stuck at a point since on closing the browser, it is asking the user to stay or leave but when a user clicks on leave it shuts down. I instead want a that when a user…
John
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Error message "Cannot animate '(0).(1)' on an immutable object instance" for Button with RelayCommand

I Use a extended button managed with two properties: IsLocked and IsRequired. IsLocked deactivates the button by using a RelayCommand : public class RelayCommand : ICommand { private Action _execute; private Func _canExecute; …
profou
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Automatic updte of ListView items

I am new to WPF Binding. Is there any way the listview automatically update when one of the item in ItemSource modifies its own dependecny property. I was trying it to do with FreezableCollection. My code is given below and the aim is to update the…
Nidhin MS
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Templated Animation : Can I reference parent properties in a Timeline?

Given the following custom animation class : (From one of the answers to this question) : public class BrushAnimation : AnimationTimeline { public Brush From { get { return this.GetValue( FromProperty ) as Brush; } set {…
Will
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Threading with ImageDrawings and freeze

I have a problem creating an Image in a background-thread. I have a main-icon (16x16 pixel) that should be merged with other icons, that can be an overlay. My code for this is this: private void GenerateConnectionIcon() { var dGr = new…
Hunv
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Dictionaries in Freezables

I want to create a Freezable that contains a Dictionary as one DependencyProperty. So I think I need a freezable Dictionary because it must not be changed when the Freezable gets frozen... or am I wrong? If so what do I really have to do?
HerpDerpington
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LinqPad WPF window InvalidOperationException on second execution

I try to open a WPF window containing my WPF user control on LinaPad. var w = new System.Windows.Window() { Content = myControl }; w.ShowDialog(); This code works only for the first time execution after opening a query tab. If I execute the code…
tk.
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Binding to FrameworkElement's properties inside an attached property

I already now how to solve my problem but I need an explanation why it works this way. I've created a test attached property which sets Text property of a TextBlock control. Because of my need of having more parameters in my attached property, I…
SOReader
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