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WP7 Sample–Create a JPG screenshot of Bing maps control

WP7 Sample–Create a JPG screenshot of Bing maps control

image
Today I saw a colleague ask an interesting question, how do you create a screenshot of a map that can be used in a list as a thumbnail? so I did some digging and came up with this sample that can be downloaded from the link below.
In summary for those who don’t want to download the sample app, most of the work is done inside of the “Take picture” button, here is the source:
// Store the size of the map control
int Width = (int)mapTest.RenderSize.Width;
int Height = (int)mapTest.RenderSize.Height;
// Write the map control to a WriteableBitmap
WriteableBitmap screenshot = new WriteableBitmap(mapTest, new TranslateTransform());
using (MemoryStream ms = new MemoryStream())
{
// Save it to a memory stream
screenshot.SaveJpeg(ms, Width, Height, 0, 100);
// Take saved memory stream and put it back into an BitmapImage
BitmapImage img = new BitmapImage();
img.SetSource(ms);
// Assign to our image control
ImageFromMap.Width = img.PixelWidth;
ImageFromMap.Height = img.PixelHeight;
ImageFromMap.Source = img;
// Cleanup
ms.Close();
}

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