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Questions tagged [rendertargetbitmap]

The RenderTargetBitmap class, part of the .NET Framework (from version 3.0), converts a System.Windows.Media.Visual object into a bitmap.

The RenderTargetBitmap class (System.Windows.Media.Imaging.RenderTargetBitmap) converts a Visual (System.Windows.Media.Visual) object into a bitmap.

It can be used for example to render text as an image.

Support of RenderTargetBitmap was added to version 3.0 of the .NET Framework.

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Add optional hardware acceleration to RenderTargetBitmap

Is there an alternative to RenderTargetBitmap that can produce an image to be used with Image.Source & is hardware accelerated in .NET 3.5 sp1? Answers for .NET 4.0 are fine but I may not be able to use them. People should vote for this if they find…
zezba9000
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Can't render pixel shader to RenderTargetBitmap! Please help!

I wrote a very simple WPF application to test the ability to render a control that has an associated pixel shader to a RenderTargetBitmap. I then write the bitmap to file (jpeg). The control is rendered onto the bitmap, however the pixel shader…
BigPrimate
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WPF Ensure RenderTargetBitmap has updated Binding values from background thread changes

I'm having a problem with RenderTargetBitmap, in that I can't get it consistently grab an updated render after I change bound properties on a background thread. Here is what I have: // Update a property on an INotifyPropertyChanged view…
Mike Marynowski
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Asynchronously render a WPF visual to a bitmap

I saw that the WinRT RenderTargetBitmap is able to render a Visual asynchronously via the "RenderAsync(visual);" method. Unfortunately the .net RendertargetBitmap does not have a RenderAsync method. Is there any workaround or entension for the…
Andreas
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RenderTargetBitmap messes up the WebView scaling

I have a very simple repro case of RenderTargetBitmap.RenderAsync overload messing up the WebView scaling. All I have on the MainPage is a WebView and a button:
Igor Ralic
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Html Render to Image (C#/Net) WITHOUT using WebBrowser

I have html string/document (if you view source any web page in the IE browser, the resulting html code) stored in the database and I need to convert this html to an image using C#/.Net wcf service. The current code is using WebBrowser and it works…
SJamal
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Generating Bitmap of WPF UIElement in ASP.NET

I'm trying to generate a bitmap off a WPF border. The whole thing sits in a asp.net app (server side of course) running .net 4.0. The problem is, that the generated image is, well, empty. Does anyone have an idea why? Here's the code. public static…
Dänu
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Viewport3D not updating visuals after performing RenderTargetBitmap

Rendering a Viewport3D with a RenderTargetBitmap.Render call seems to cause the Viewport3D to no longer update its visual content. The interactive actions still work though, such a hover-over and clicking. I've created an example in which I have a…
spyro
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Any way to save an UIElement created programmatically in an image file?

I'm trying to save an UIElement created programmatically in a JPG/PNG/BMP image in a Windows Phone 8.1 (C#) application. I'm using the class RenderTargetBitmap using the method RenderAsync() but it only works with UI elements created in the XAML…
DarioDP
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Image control uses high memory than canvas. Why?

I used a canvas to render some long contents( for example texts, images, shapes, etc., of few pages) in WPF. When I scale it using Scale transform, it scales and the memory usage was under control. Now, I have an idea of using few image control in…
Uthistran Selvaraj.
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TallComponents PDF Rasterizer.NET convertToWPF memory error

I am trying to rasterize pdf's using TallComponents PDF Rasterizer It works fine going to tiff.. Although I wanted to ConvertToWpf.. I asked this question to them directly although no response.. so, I followed their example code.. …
Chris Fazzio
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wpf RenderTargetBitmap of Viewport3D on a web server (off-screen)

I'm creating a Viewport3D (CurViewport3D) off-screen and fill it with only one plane (for testing purpose). Via RenderTargetBitmap and BitmapEncoder a MemoryStream of the content of this viewport (as jpg) is created. The whole functionality is put…
manton
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UWP - Use RenderTargetBitmap and only capture the visual area

I want to use RenderTargetBitmap to just capture the visual area in UWP app. But the result is to capture the full element image in canvas that include offscreen's part. This is my application Image. This my…
Zack
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An exception when creating CompatibleRenderTarget from DcRenderTarget

I’m using the .Net Direct2D API in “Windows API Code Pack for .NET” to improve the drawing performance, it always throws the “Exception from HRESULT: 0x88982F80” when creating the CompatibleRenderTarget from DcRenderTarget, I don’t know why, it has…
Howard
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UWP RenderTargetBitmap.RenderAsync Hangs

I wrote a function to rasterize stroke data from an InkCanvas, but for some reason renderBMP.RenderAsync(...) hangs indefinitely. Any advice? RenderTargetBitmap rasterizePage(int pageNumber) { if (readStrokes(pageNumber) == null) return…
Michael Sohnen
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