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How to create an image of a WPF UserControl at runtime

I've created a WPF application which has a Canvas on which I place UserControls which are moveable and resizeable by the user (just like a Windows-Window). Now I have detected that this can be very slow on older PC's which is a problem.

As a solution I thought about generating a graphic showing the UserControl and show this while resizing/dragging the Control, to prevent WPF from recalculating all Elements permanently. The only problem is that I have no idea how to generate this image.

Is there perhaps something like a function which does this in .Net? Or how could I do this on my own?

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Tokk Avatar asked Mar 23 '11 10:03

Tokk


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1 Answers

You can render a WPF control to a bitmap using RenderTargetBitmap, then this image can be copied to the clipboard, saved to a file, or used as part of your GUI

Check out Get a bitmap image from a Control view

Beware with this that you can hit problems when parts of the control you are trying to render are not visible (within a scroll viewer perhaps)

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Scott Avatar answered Sep 21 '22 09:09

Scott