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QuestionRepost from C# forum WPF app Pin
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QuestionWPF Combo Box SelectedValue = null issue Pin
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QuestionWPF RichTextBox Document Bind using Binding property Pin
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QuestionDisplaying (Calling) 2 UserControl within a UserControl (WPF) Pin
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QuestionAsync method using RenderTargetBitmap and BitmapEncoder Pin
FlurryKnox18-Jun-14 21:40
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AnswerRe: Async method using RenderTargetBitmap and BitmapEncoder Pin
Gerry Schmitz19-Jun-14 13:39
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GeneralRe: Async method using RenderTargetBitmap and BitmapEncoder Pin
FlurryKnox20-Jun-14 6:34
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GeneralRe: Async method using RenderTargetBitmap and BitmapEncoder Pin
Gerry Schmitz20-Jun-14 10:21
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GeneralRe: Async method using RenderTargetBitmap and BitmapEncoder Pin
Pete O'Hanlon20-Jun-14 10:48
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GeneralRe: Async method using RenderTargetBitmap and BitmapEncoder Pin
Gerry Schmitz20-Jun-14 11:10
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GeneralRe: Async method using RenderTargetBitmap and BitmapEncoder Pin
Pete O'Hanlon20-Jun-14 11:16
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GeneralRe: Async method using RenderTargetBitmap and BitmapEncoder Pin
FlurryKnox21-Jun-14 19:35
FlurryKnox21-Jun-14 19:35 
Thank you for your help.

I have been researching this and developing some test code.

The thing is that what I am doing is creating a series of bitmaps based upon the state of a user control. The user control displays an image or video and draws some shapes such as lines and rectangles and ellipses. I want to capture the state of the user control several times a second using a visualbrush and use rendertargetbitmap to save to bitmap on the disk.

This is a length process. With lengthy processes, it is recommended to use a background worker. However, I need some way of sharing the visualbrush with the backgroundworker thread. When I search google, people are saying try to refactor the code to use background worker. I am not sure how to do this as I need the background worker to have access to the UI elements. I think I need to use a single-threaded apartment (STA) thread. However, background workers are not STA?

The alternative of creating a new window is possible and using the windows UI thread. However, it is not advised to do lengthy process on a UI thread. I would need to pump for windows messages (I am getting debug warning in visual studio).

So I am not sure what is the best way forward...I might be missing something obvious....

Many thanks....
GeneralRe: Async method using RenderTargetBitmap and BitmapEncoder Pin
Gerry Schmitz22-Jun-14 1:51
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QuestionStarter MVVM Framework Recommendation Pin
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GeneralRe: Starter MVVM Framework Recommendation Pin
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