Create Stream from a Base64 String

Create Stream from a Base64 String

Make sure your image data does not contain some header information at the beginning:

imageCode = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAMgAAABkC...

This will cause an error. Just remove everything in front of and including the first comma, and you good to go.

imageCode = "iVBORw0KGgoAAAANSUhEUgAAAMgAAABkC...

Covert base64 image to a stream

Stream memStream = new MemoryStream(Convert.FromBase64String(base64StringData));