Image control does not refresh

[Sunit Joshi]

Hello All

I have an image control in main.aspx in a method

BuildImage()
{
//...code..
imgDisks.ImageU rl = "barChart.aspx" ;

}

This is called whenever the user Clicks on Submit button:

In barChart.aspx I do:
private void Page_Load(objec t sender, System.EventArg s e)
{
Chart chart = getChart();
Bitmap bitmap = new Bitmap(chart.Wi dth, chart.Height,
PixelFormat.For mat32bppArgb);
Graphics g = Graphics.FromIm age(bitmap);
chart.draw(g);

MemoryStream stream = new MemoryStream();
bitmap.Save(str eam, ImageFormat.Png );

Response.Clear( );
Response.Conten tType = "image/png";
Response.Binary Write(stream.To Array());
g.Dispose();
}

However I still have to sometimes click on submit twice to get the new
image. Any pointers on what might be happening are greatly
appreciated.

thanks
Sunit
sj****@ingr.com

[Suresh]

It's possible that your page is being loaded from the
cache on the browser.
Try adding junk(random) to the URL and see if that helps.
(i.e. mypage.asps?jun k=1340891234809 )

HTH,
Suresh.

-----Original Message-----
Hello All

I have an image control in main.aspx in a method

BuildImage()
{
//...code..
imgDisks.Image Url = "barChart.aspx" ;

}

This is called whenever the user Clicks on Submit button:

In barChart.aspx I do:
private void Page_Load(objec t sender, System.EventArg s e)
{
Chart chart = getChart();
Bitmap bitmap = new Bitmap(chart.Wi dth, chart.Height, PixelFormat.For mat32bppArgb); Graphics g = Graphics.FromIm age(bitmap);
chart.draw(g);

MemoryStream stream = new MemoryStream();
bitmap.Save(str eam, ImageFormat.Png );

Response.Clear( );
Response.Conten tType = "image/png";
Response.Binary Write(stream.To Array());
g.Dispose();
}

However I still have to sometimes click on submit twice to get the newimage. Any pointers on what might be happening are greatly
appreciated.

thanks
Sunit
sj****@ingr.co m
.