I have an asp.net website and am exporting an image from the Report Viewer.  I have created my byte array to get the data from the report viewer and now I need to save an image with transparency to the client machine using the response headers.  I was able to do this by saving the array to the server as a bmp and then adding transparency and saving to the client as a GIF; however, the requirement has changed and now I need to do this without saving the file to the server and even though I have found several solutions using unsafe code these will not work for us because we are not allowed to use unsafe code in our environment. 

So in short I need a way to go from an array of bytes to a transparent gif and save to the client machine without using unsafe code and without saving a file to the server.