How to pass bitmap variable directly to testimage control

Forcasual Things

Hi,

Given below code shows saving bitmap variable "_current" saving in a folder "images" and then assigning it to "testimage" web control. Initially "_current" has a image. is there anyway I can pass "_current" directly to "testimage" web control? Right now I have to save image in a temporary folder and access it.

Bitmap bmap = ContrastProcessing();

_current = (Bitmap)bmap.Clone();

Random rnd = new Random();

int a = rnd.Next();

_current.Save(Server.MapPath("~/Images/" + a + ".png"));

testimage.ImageUrl = "~/Images/" + a + ".png";

4 Replies

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Suresh M11y ago
Accepted answer
you need to convert your image as base64 string and assign like below

System.IO.MemoryStream ms = new System.IO.MemoryStream();
bmap.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
byte[] byteImage = ms.ToArray();

string yourimage_base64_string=Convert.ToBase64String(byteImage ,0,byteImage .Length);
testimage.ImageUrl="data:image/png;base64,"+yourimage_base64_string;
Forcasual Things11y ago
Thanks! This worked like a charm. Have been struggling with this.
Forcasual Things11y ago
Thanks for your input.That doesn't work though. testimage is asp.net image web control ,it doesn't have source method.
Suresh M11y ago
testimage.source=(Image)_current;