It is possible print the diagram?

I tried use SaveToPng but i get the follwing error:


There is not enough free space to perform the operation.


What is?

Stoyo wrote on Nov 16^th, 2009 at 11:22am:


Hi Stoyan,
That was exactly my approach to enable user to save the png file with the browser. Nevertheless I am getting: "WriteableBitmap has protected content. Pixel access is not allowed." even if I want to write to a MemoryStream and then send it using HTTP Request.

Here is the code that gives error:
byte[] buffer = new byte[2000000];
MemoryStream stream = new MemoryStream(buffer, true);
diagram.SaveToPng(stream);

First of all... thanks for quick response. It gave me a new energy to work;) Here is what I've found out.

Unfortunately The solution works when we have a standalone SL application. It do not work when it is embedded into a webapplication. It is related to cross-domain references (and the WriteableBitmap do not take fully trusted assemblies into consideration). I can use the Bitmap just for display (e.g. in SL Popup). The SaveToPng method also gives the same error.

The printing feature would be good enough, but unfortunately it stops with "Printing page 2 of 12 ..." message in the diagram box.

Any other ideas?

I have the SL app and a web service ins separate projects (one solution). The main aspx page hosts the application like:

<object data="data:application/x-silverlight-2," type="application/x-silverlight-2" width="100%" height="100%">
  <param name="source" value="ClientBin/TheWallSL.xap"/>
  <param name="onError" value="onSilverlightError" />
  <param name="background" value="white" />
  <param name="minRuntimeVersion" value="3.0.40624.0" />
  <param name="autoUpgrade" value="true" />
  <a href="http://go.microsoft.com/fwlink/?LinkID=149156&v=3.0.40624.0" style="text-decoration:none">
   <img src="http://go.microsoft.com/fwlink/?LinkId=108181" alt="Get Microsoft Silverlight" style="border-style:none"/>
  </a>
    </object> 

So it shares the domain. I tried with the absolute url... still the same error. I will try to embed your demo into mine... I hope it is only a matter of configuration.