setting a value of server side variable in javascript and wants to use that server side variable on page load

Hi,

I am trying to set the value of a server side variable in javascript and wants to use that variable on page load.

Here is my sample code.

--------------------------

private string testVal = null;

 

private void registerScript(){
if (!this.Page.ClientScript.IsClientScriptBlockRegistered("RequestHeaderValidation"))

{
StringBuilder sb = new StringBuilder("" + Environment.NewLine);

sb.Append(" var version = '2.0'; " + Environment.NewLine);
sb.Append(" var isInstalled = Silverlight.isInstalled(version);" + Environment.NewLine);

sb.Append(" if (isInstalled)" + Environment.NewLine);
sb.Append(" {" + Environment.NewLine);

sb.Append(" '" + testVal + "' = 'Y'; " + Environment.NewLine); sb.Append(" }" + Environment.NewLine);
//sb.Append(" " + this.ClientScript.GetPostBackEventReference(this, string.Empty) + Environment.NewLine);

this.Page.ClientScript.RegisterStartupScript(this.GetType(), "RequestHeaderValidation", sb.ToString(), true);
}

 

}

protected override void OnInit(EventArgs e)
{

registerScript();

 base.OnInit(e);
}

 

protected override void OnLoad(EventArgs e)
{

// Want to use the value of the variable (testval) here

Response.write(testval);

// It should return me 'Y'

 base.OnLoad(e);
}

testVal is a page level variable. Setting the value of the testval in register script and wants to use that value in pageload.

I am getting null value. How can I get the value of that variable that is being set on registerscript method.

Please help.

Thanks!!

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private string testVal = null;
 
 
 
private void registerScript(){ 
if (!this.Page.ClientScript.IsClientScriptBlockRegistered("RequestHeaderValidation"))
 
{ 
StringBuilder sb = new StringBuilder("" + Environment.NewLine);
 
sb.Append(" var version = '2.0'; " + Environment.NewLine); 
sb.Append(" var isInstalled = Silverlight.isInstalled(version);" + Environment.NewLine);
 
sb.Append(" if (isInstalled)" + Environment.NewLine); 
sb.Append(" {" + Environment.NewLine); 
 
sb.Append(" '" + testVal + "' = 'Y'; " + Environment.NewLine); sb.Append(" }" + Environment.NewLine); 
//sb.Append(" " + this.ClientScript.GetPostBackEventReference(this, string.Empty) + Environment.NewLine); 
 
this.Page.ClientScript.RegisterStartupScript(this.GetType(), "RequestHeaderValidation", sb.ToString(), true); 
}
 
 
 
}
 
protected override void OnInit(EventArgs e) 
{
 
registerScript();
 
 base.OnInit(e); 
}
 
 
 
protected override void OnLoad(EventArgs e) 
{
 
// Want to use the value of the variable (testval) here
 
Response.write(testval);
 
// It should return me 'Y'
 
 base.OnLoad(e); 
}