I have a System.Drawing.Image
in my program. The file is not on the file system it is being held in memory. I need to create a stream from it. How would I go about doing this?
Try the following:
public static Stream ToStream(this Image image, ImageFormat format) {
var stream = new System.IO.MemoryStream();
image.Save(stream, format);
stream.Position = 0;
return stream;
}
Then you can use the following:
var stream = myImage.ToStream(ImageFormat.Gif);
Replace GIF with whatever format is appropriate for your scenario.
Use a memory stream
using(MemoryStream ms = new MemoryStream())
{
image.Save(ms, ...);
return ms.ToArray();
}
public static Stream ToStream(this Image image)
{
var stream = new MemoryStream();
image.Save(stream, image.RawFormat);
stream.Position = 0;
return stream;
}
Using File Stream
public Stream ToStream(string imagePath)
{
Stream stream=new FileStream(imagePath,FileMode.Open);
return stream;
}
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