Convert Base64 string to BitmapImage C# Windows Phone

Question

I receive a image/jpeg;base64 string from server. How can I convert this string to BitmapImage and set like Image.Source ?

string imgStr = "data:image/jpeg;base64,/9j/4AAQSkZJRgABAQEAAQABAAD .... ";
BitmapImage bmp = Base64StringToBitmap(imgStr);
myImage.Source = bmp;

Thanks in advance!

You can get the bytes with `byte[] byteBuffer = Convert.FromBase64String(base64String);` but do not know how to set in your image control. — Vitor Canova, May 13 '14 at 09:12
Vitor Canova, thanks! I can usebyteBuffer with memoryStream and set it like Source for BitmapImage! — el-niko, May 13 '14 at 10:01

score 6 · Accepted Answer · edited Feb 12 '15 at 13:06

6

I find solution for my issue:

public static BitmapImage Base64StringToBitmap(string  base64String)
{
    byte[] byteBuffer = Convert.FromBase64String(base64String);
    MemoryStream memoryStream = new MemoryStream(byteBuffer);
    memoryStream.Position = 0;

    BitmapImage bitmapImage = new BitmapImage();
    bitmapImage.SetSource(memoryStream);

    memoryStream.Close();
    memoryStream = null;
    byteBuffer = null;

    return bitmapImage;
}

edited Feb 12 '15 at 13:06

Cute Bear

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answered May 14 '14 at 07:33

el-niko

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I don't know if things changed in .Net 6 or what but for me this solution did not work. After various tests I was able to get it working by: 1. not closing the memoryStream, so removed the line `memoryStream.Close();`, and 2. calling the `BitmapImage.BeginInit()` before the line `bitmapImage.SetSource(memoryStream);`, similarly 3. calling the `BitmapImage.EndInit()` after the line `bitmapImage.SetSource(memoryStream);`. I've confirmed all three are required to work in my case. – notarobot Mar 18 '23 at 20:31

Convert Base64 string to BitmapImage C# Windows Phone

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