Solution of Error "PageRequestManagerTimeoutException" using DNN Framework

Introduction

Recently, I encountered a weird problem. A method invoked a stored procedure that expends more than 90 seconds, and the button which invokes that method is inside an updatepanel. The error message is "SysWebForms.PageRequestManagerTimeoutException: The server request timed out."

Background

After doing a search on the internet, I found it is caused by the property AsyncPostBackTimeout of ScriptManager. It has an integer value that represents the time-out in seconds. The default value of the AsyncPostBackTimeOut property is 90 seconds. But my procedure will last for 200 seconds.

Solution One

Most articles suggested adding the property-value likes "AsyncPostBackTimeout=360000" in the ASPX control.

Example:

<asp:ScriptManager ID= "ScriptManager1 " 
	AsyncPostBackTimeOut= "360000 " runat= "server " />

Solution Two

But recently I am using the DNN framework. If using "AJAX.RegisterScriptManager()", there shouldn't be any ScriptManager control that exists in the DNN module file. But we can get the current registered ScriptManager object and set the AsyncPostBackTimeout property, or use the SetScriptManagerProperty() method through the following steps.

Example:

if (AJAX.IsInstalled())
{
    AJAX.RegisterScriptManager();
    ScriptManager scriptManager = ScriptManager.GetCurrent(this.Page);
    scriptManager.AsyncPostBackTimeout = 360000;
}

OR: use the SetScriptManagerProperty method in DotNetNuke.Framework.AJAX class.

Example:

if (AJAX.IsInstalled())
{
    AJAX.RegisterScriptManager();
    AJAX.SetScriptManagerProperty(this.Page, "AsyncPostBackTimeout", 
	new Object[] { 360000 });
}

Solution Three

Actually, we can hide this problem of "PageRequestManagerTimeoutException" by adding the below JavaScript. But it is not recommended.

Example:

Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
function EndRequestHandler(sender, args)
{
  if (args.get_error() != undefined)
   {
       else if(args.get_error().name === 
		'Sys.WebForms.PageRequestManagerTimeoutException')
       {
            args.set_errorHandled(true);
       }
       else
       {
           // not this kind of error so let the default behavior happen.
       }
   }
}

History

• 13^th January, 2010: Initial post

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