Server Error in '/' Application.

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:


Line 14:         url=Request["url"].ToString();
Line 15:          url = url.Replace("view","preview");
Line 16: 		 issuedate=Request["issuedate"].ToString();
Line 17: 		 title=  Request["title"].ToString() + ",إصدارات يومية ,إسبوعية تصدر عن مؤسسة أخبار اليوم ";
Line 18:     }  

Source File: d:\akhbarelyom.com\wwwroot\Landing\pdf.aspx.cs    Line: 16

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   quetion.Page_Load(Object sender, EventArgs e) in d:\akhbarelyom.com\wwwroot\Landing\pdf.aspx.cs:16
   System.Web.UI.Control.OnLoad(EventArgs e) +102
   System.Web.UI.Control.LoadRecursive() +67
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1384


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.2623.0