how to solve NullReferenceException exception in Log.Error

Question

My C# code is like this

protected void Application_Error(object sender, EventArgs e)
{
var ex = Server.GetLastError();
Log.Error(ex);
var httpStatusCode = (ex is HttpException) ? (ex as HttpException).GetHttpCode() : 500;
var httpContext = ((MvcApplication)sender).Context;
httpContext.ClearError();
httpContext.Response.Clear();
httpContext.Response.StatusCode = httpStatusCode;
var shouldHandleException = true;
Exception exceptionToReplace;
}

And Log.Error(ex); throws this

 

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

error cause var ex = Server.GetLastError(); is null .

 

My question is how to solve this error?Any info will be helpful regarding this

Answer 1

hi sagar thanks for reply :) . i put breakpoint into var ex = Server.GetLastError(); and got ex value is null then continue and found this error in log.error(ex) . I will look into posted link. any other way to solve it . I didn't build any error.aspx page into my application.

Answer 2

Hi,

Firstly start debugging to find where it showing that error.

if not solved visit below link :-

 

https://www.codeproject.com/Questions/145096/how-do-i-solve-the-System-NullReferenceException-e

 

Hope it helps....