Displaying image in ASP.NET C#

Question

I am converting Base64 code to image and I am using following way to save and display that image.

var kpin = Base64ToImage(TextBox1.Text);
kpin.Save(@"e:\myim.png");
Image1.ImageUrl = @"e:\myim.png";

and class is

public Image Base64ToImage(string base64String)
{
    byte[] imageBytes = Convert.FromBase64String(base64String);
    MemoryStream ms = new MemoryStream(imageBytes, 0,
      imageBytes.Length);
    ms.Write(imageBytes, 0, imageBytes.Length);
    Image image = Image.FromStream(ms, true);
    return image;
}

and this process working fine but I need an image not to be saved in hard disk. How to display this image directly without saving to hard disk and retrieving back.

Mustafa Shabib · Accepted Answer · 2012-01-13 16:56:12Z

1

Instead of setting the Image1.ImageURL to the path of your image, you can instead do one of several things:

Use an img tag with the Base64 data in it directly - http://www.sweeting.org/mark/blog/2005/07/12/base64-encoded-images-embedded-in-html Not all browsers support this.
Create an Action or Webform (depending on whether you're using ASP.NET MVC or not) that takes as input whatever you need to either retrieve or generate the Base64 encoded data, and then set the response headers to serve the correct content type (image/png or something) and write the image directly to the Response.OutputStream (or use ContentResult in ASP.NET MVC). Tons of examples via Stackoverflow on how to do either.

-M

answered Jan 13, 2012 at 16:56

Mustafa Shabib

74014 silver badges36 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Jon Hanna · Accepted Answer · 2012-01-13 16:57:07Z

0

Don't bother with the image object at all, and just do it direct:

public void Base64ToResponse(string base64String)
{
    Response.ContentType = "text/png"; //or whatever...
    byte[] imageBytes = Convert.FromBase64String(base64String);
    Response.OutputStream(imageBytes, 0, imageBytes.Length);
}

answered Jan 13, 2012 at 16:57

Jon Hanna

114k10 gold badges151 silver badges258 bronze badges

Collectives™ on Stack Overflow

Displaying image in ASP.NET C#

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related