show loading image using c# code behind

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Hi all,

I am working on a web application where I want to show a loading image (busy indicator) when my code create a xml file and download it I want to show the image in a div. I should use c# code only not update panel nor the jquery ajax technique. My code looks like:

protected void lb_DownloadXML_Click(object sender, EventArgs e)
{
this.imgLoading.Visible = true;
//all my code
this.imgLoading.Visible = false;
}

my image is

<img src="Images/loading_big.gif" width="50" height="40" runat="server" id="imgLoading"
visible="false" />

but its not working. Can anybody explain me how can I achieve this task.

thanks in advance.

Posted 16-Jan-12 18:22pm

tanweer

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Comments

pankajupadhyay29 17-Jan-12 3:15am

try to show that image on ClientClick of lb_DownloadXML using javascript.

demouser743 17-Jan-12 3:50am

what you mean by this code

this.imgLoading.Visible = true;
this.imgLoading.Visible = false;

showing the image and again setting it to false this will not work in any case.. Try by removing this this.imgLoading.Visible = false;

1 solution

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

demouser743 · Answer 1 · 2012-01-16T21:53:00

Solution 1

Try by removing the following in your code

C#

protected void lb_DownloadXML_Click(object sender, EventArgs e)
      {
            this.imgLoading.Visible = true;
            //this.imgLoading.Visible = false; (Comment or delete this statement)
      }

Posted 16-Jan-12 21:53pm

demouser743

Comments

tanweer 17-Jan-12 4:22am

actually I want to hide the image after downloading the file successfully.

demouser743 17-Jan-12 4:28am

Then add a bit of javascript adding some time to it

show loading image using c# code behind

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show loading image using c# code behind

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