Heres the steps i do it in
create an aspx page that calls your image draw routing in its page load
event
write a function that draws your image onto a bitmap
use bitmap.save to output your image to a stream. Use
Response.OutputStream as this stream.
for example
private void Page_Load(object sender, System.EventArgs e)
{
//initialise etc first
Renderer.RenderToStream(Response.OutputStream);
}
in my renderer class
Public void RenderToStream(Stream target)
{
//---
//do all your drawing
//---
//then to send back a jpg
EncoderParameters encoderParams = new EncoderParameters();
long[] quality = new long[1];
quality[0] = 99;
EncoderParameter encoderParam = new EncoderParameter(Encoder.Quality,
quality);
encoderParams.Param[0] = encoderParam;
ImageCodecInfo[] arrayICI = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo jpegICI = null;
for (int x = 0; x < arrayICI.Length; x++)
{
if (arrayICI[x].FormatDescription.Equals("JPEG"))
{
jpegICI = arrayICI[x];
break;
}
}
if (jpegICI != null)
{
bm.Save(target, jpegICI, encoderParams);
}
//clean up everything here
}
call this from another page (programatically) like
picDial.ImageUrl=@"dial.aspx?ID=1&VALUE="+sValue+" &TYPE="+sType+"&TITLE="+sTitle;
http://darkhold.aspxconnection.com/Default.aspx
for the end result of what ive done.
hth
Scott
Popoxinhxan wrote:
HI guy
I am working on the web application that required to display
the chart image on the page. The process is clicking the button
and browser will popup another windows that displayed the
image. The problem is the image is not a file but a array of
bytes so that i couldn't using it's image url to display in
different browser. Is there any way to create an image on the
fly i.e. get the array of bytes and display it on the browser
Assume i have an Generate.aspx that contain the button and its
input to generate the image ie.image width, image height, an Display.aspx to
show the image
and the following method
//Returns array of bytes
private byte[] GetBinaryImage(int width,int height)
{
//Get data from database
}
This is urgent someone help me to do so please.
Thank you
Popoxinhxan
