c# - Does WriteableBitmap has new features in Silverlight 4? -


And if someone can give me an example to use it with a stream? (Not sure how that works) I know how to make BitmapImage from URI , now let me write this image to the writeable bitmap < / Code>, but I get a blank exception error with something like this:

bitmap image image = new bitmap image (new url ("http: // Www.example.com/example.png ")); Writeable bitmap newImage = new writable bitmap (image);

In short: No, there are no new features in Silverlight 4. Compensate missing functionality.

Regarding your real problem: You should add a handler to the event to see if an error occurs while downloading the image. And you should create a writeable bitmap in the event handler. 

  var image = new bitmapImage (new URI ("http://www.example.com/example.png")); Writeable bitmap newImage = faucet; Image.ImageOpened + = (s, e) = & gt; NewImage = new writable bitmap (image);

Please also keep in mind that cross-domain contexts are allowed. See for details, you should place the image in the ClientBin folder of the web project and instead use a relative path.

Alternatively, you can compile the image as a resource in the assembly and load it if you are there. There is an extension method to make this task a bit easier. But keep in mind that the size of the assembly raises and the time for the initial XAP load will increase. 

  // Write the address of the calling assembly by writing a relative path. Writeable bitmap (0, 0) .FromResource ("example.png");

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