How to make gif image invisible ??

Posted on 2008-10-05
Last Modified: 2008-10-24

     i have a grid which contains link for showing report in form of pdf.

     This we are doing through Sql server 2005 reporting services.

     Now when the link is clicked, a gif image is displayed showing the progress.

    The report is shown on a new page.

    What i want is when the new page is displayed the gif image should get hidden.

    I want when the report is finished loading then image should get inivisible.

Now how can i access gif from parent page from child page ???

On page load of child page i tried injecting javascript alert();

But the page is appearing in pdf format since i am using Sql server 2005 reporting services and

directly injecting data by saying Response.BinaryWrite();

So how can i fire javascript in such page ??????
Question by:Paramhans
  • 3
  • 3
LVL 22

Assisted Solution

by:Ivo Stoykov
Ivo Stoykov earned 250 total points
ID: 22647320
Hi Paramhans
you need a simple JavaScript attached to the onload event of the element showing report.
Because you didn't attache any source I've made a simple HTML sample snippet hoping you've catch the idea.



   function hideGif()


     document.getElementById("test").style.display = "none";




<!-- your gif imege -->

<IMG SRC="1.jpg" WIDTH="320" HEIGHT="450" BORDER="0" ALT="" id="test">

<!-- your gif imege -->

<div id="report">report is loading in this div</div>

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Author Comment

ID: 22656697
Hi Thanx 4 the reply.
I tried injecting javascript at runtime but it did not work.

Also i would like to explain the problem once again.

I have a link on Page1 on the click of which the Gif is displayed on same page and a new page called as Page2 which is responsible for showing report is displayed.

When page2 is completely loaded i want to hide Gif image on Page1 ?????
Since Page2 shows report using Sql server 2005 reporting services.

Injecting javascript is not working on Page2.


Author Comment

ID: 22656741

I have code in ItemCommand of Grid linkbutton on page1 as following:



On Page2 (PDFReport.aspx) page_load event i have code to generate pdf report using reporting services as following:


				Response.Buffer= true;

				string fileName= System.Configuration.ConfigurationSettings.AppSettings["ReportName"];

				Response.ContentType = "application/pdf";

				Response.AddHeader("Content-Disposition", "attachment; filename=" + fileName + "");


				SurveyReport1.ReportingService objRService =  new SurveyReport1.ReportingService();

				objRService.Url = System.Configuration.ConfigurationSettings.AppSettings["ReportingServiceURL"];

				objRService.PreAuthenticate = false;

				objRService.Credentials = System.Net.CredentialCache.DefaultCredentials;

				objRService.Timeout = 1000 * Convert.ToInt32(ConfigurationSettings.AppSettings["WebServiceTimeout"]); 

				string PDFData = objRService.GeneratePdfReport(Convert.ToString(Request.QueryString["SurveyID"]));


				byte [] bytData = Convert.FromBase64String(PDFData);


This is the code for GeneratePdfReport() written in a class file:

		public string GeneratePdfReport(string surveyId)




				SQLReportingService.ReportingService rs = new SQLReportingService.ReportingService();

				rs.Url = ConfigurationSettings.AppSettings["ReportingServiceURL"];


				rs.Credentials = CredentialCache.DefaultCredentials;

				byte[] result = null;

				string reportPath = ConfigurationSettings.AppSettings["ReportPath"];

				string format = "PDF";

				string historyID = null;

				string devInfo = @"<DeviceInfo><Toolbar>False</Toolbar></DeviceInfo>";

				// Prepare report parameter.

				ParameterValue[] parameters = new ParameterValue[1];

				parameters[0] = new ParameterValue();

				parameters[0].Name = "surveyId";

				parameters[0].Value = surveyId;



				string showHideToggle = null;

				string encoding;

				string mimeType;

				Warning[] warnings = null;

				ParameterValue[] reportHistoryParameters = null;

				string[] streamIDs = null;

				SessionHeader sh = new SessionHeader();

				rs.SessionHeaderValue = sh;



					result = rs.Render(reportPath, format, historyID, devInfo, parameters, null,

						showHideToggle, out encoding, out mimeType, out reportHistoryParameters, out warnings,

						out streamIDs);

					sh.SessionId = rs.SessionHeaderValue.SessionId;

					return Convert.ToBase64String(result);


				catch (Exception)


					return null;



			catch (Exception)


				return null;



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LVL 22

Assisted Solution

by:Ivo Stoykov
Ivo Stoykov earned 250 total points
ID: 22657589
Hi Paramhans
How correspond Page1 & Page 2? You must have onClick event in Page1, right?

Author Comment

ID: 22666230
On page 1 we have a link
When i click on that link lnkShow_click gets fired.
LVL 22

Accepted Solution

Ivo Stoykov earned 250 total points
ID: 22667028
Well here is a possible solution

// default page (1 - report is called from)


    <form id="form1" runat="server">


      <img id="myGif" src="#" /> <!-- your gif - must have an ID which is used in page2 -->




// page2 - report

    protected void Page_Load( object sender, EventArgs e )


      String scriptString = "<script language=\"JavaScript\">\n";

      scriptString += "test();\n";

      scriptString += "function test() {  window.opener.document.getElementById('myGif').style.display='none';  } \n";

      scriptString += "<";

      scriptString += "/";

      scriptString += "script>";

      ClientScript.RegisterStartupScript(this.GetType(), "test", scriptString);


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