asp.net - datatype image in $.ajax -

in page cap.aspx

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   string code = getrandomtext();      bitmap bitmap = new bitmap(160,50,system.drawing.imaging.pixelformat.format32bppargb);       graphics g = graphics.fromimage(bitmap);      pen pen = new pen(color.lavenderblush);      rectangle rect = new rectangle(0,0,160,50);      solidbrush b = new solidbrush(color.lightpink);     solidbrush blue = new solidbrush(color.white);      int counter = 0;       g.drawrectangle(pen, rect);     g.fillrectangle(b, rect);      (int = 0; < code.length; i++)     {         g.drawstring(code[i].tostring(), new font("tahoma", 10 + rand.next(14, 18)), blue, new pointf(10 + counter, 10));         counter += 20;     }      drawrandomlines(g);       bitmap.save(response.outputstream,imageformat.gif);      g.dispose();     b.dispose();     blue.dispose();     bitmap.dispose(); 

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<div id="divdialog" style="display:none">     <img src="cap.aspx"/> </div> 

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$("#divdialog").dialog(); 

================================================================================== show dialog not show image? address cap.aspx correct!

how cap.aspx $.ajax , datatype:image?

i think key here add contenttype , bufferoutput

context.response.contenttype = "image/gif";      context.response.bufferoutput = false;   

eg:

public void renderit(httpcontext context)  {     context.response.contenttype = "image/gif";          context.response.bufferoutput = false;       string code = getrandomtext();      using(bitmap bitmap = new bitmap(160,50,system.drawing.imaging.pixelformat.format32bppargb))     {         using(graphics g = graphics.fromimage(bitmap))         {             using(pen pen = new pen(color.lavenderblush)             {                    using(solidbrush b = new solidbrush(color.lightpink))                 {                     using(solidbrush blue = new solidbrush(color.white))                     {                      rectangle rect = new rectangle(0,0,160,50);                      int counter = 0;                       g.drawrectangle(pen, rect);                     g.fillrectangle(b, rect);                      (int = 0; < code.length; i++)                     {                         g.drawstring(code[i].tostring(), new font("tahoma", 10 + rand.next(14, 18)), blue, new pointf(10 + counter, 10));                         counter += 20;                     }                      drawrandomlines(g);                       g.dispose();                     b.dispose();                     blue.dispose();                      // return                     bitmap.save(context.response.outputstream, imageformat.gif);                      // dispose                     bitmap.dispose();                     }                 }             }         }     }      context.response.end(); }