API Cliboard : Can a WritableBitmap to clipboad ?

Question

Hi,

 

With the Clipboard API, can i copy a WritableBitmap or something like that to my clipboard ?

 It's very usefull with charts.

 

Regards,

rg701653

Answer 1

It is only possible to use (unicode) text with the current implementation of the Clipboard API.

Answer 2

 Ok thanks for your reply.

 

I will search if it exists a workaround.

Answer 3

You could convert the WriteableBitmap data to a byte[] array, encode it as Base64 and copy it to the Clipboard as text. See my blog post if you wan to know how to convert the WriteableBitmap's data: Convert, Encode And Decode Silverlight WriteableBitmap Data.

If you have the byte array, convert it to base64:

byte[] data = bitmap.ToByteArray();
string dataB64 = Convert.ToBase64String(data);

 

Answer 4

 Ok.

I thank use the same solution, but i have one question :

Javascript-side : i have the WritableBitmap encoded, how to create a picture with un byte array ?

Answer 5

Instead of converting the WriteableBitmap to a byte array you should encode it as a JPEG or an other image format and send that as base64 string. Then on the JScript side you need to decode the base64 string and you have a JPEG file format.

using(MemoryStrem memStream = new MemoryStream())
{
   EncodeJpeg(bitmap, memStream);
   byte[] data = memStream.ToArray();
   string dataB64 = Convert.ToBase64String(data);
}

Again, see my Convert, Encode And Decode Silverlight WriteableBitmap Data blog post for the EncodeJpeg() method.

Answer 6

Great !

I will test it !

 

Thank you.

rg701653