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 56:         for (int i = 0; i < 3; i++)
Line 57:         {
Line 58:             if (Title.Substring(Title.Length - 1, 1).ToString() == ".")
Line 59:                 Title = Title.Substring(0, Title.Length - 1);
Line 60:         }

Source File: c:\inetpub\vhosts\kadoosedu.ir\httpdocs\App_Code\UI\Class_UI_dep1.cs    Line: 58

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   Class_UI_dep1.ConvertTitleToSeoFormat(String Title) in c:\inetpub\vhosts\kadoosedu.ir\httpdocs\App_Code\UI\Class_UI_dep1.cs:58
   ASP.fa_showcoursesdetails_aspx.__RenderContent4(HtmlTextWriter __w, Control parameterContainer) in c:\inetpub\vhosts\kadoosedu.ir\httpdocs\fa\showCoursesDetails.aspx:101
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +275
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +79
   ASP.fa_masterpage_master.__Renderform1(HtmlTextWriter __w, Control parameterContainer) in c:\inetpub\vhosts\kadoosedu.ir\httpdocs\fa\MasterPage.master:163
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +275
   System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +11662590
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +46
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +79
   System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +52
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +168
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +79
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +168
   System.Web.UI.Page.Render(HtmlTextWriter writer) +39
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +79
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4238


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0