Object reference not set to an instance of an object.

[SuperJediMedia]

How to fix this with an Object reference not set to an instance of an object. error?

 

public static string UserName

{

 

get

{

String username= HttpContext.Current.Session["UserName"].ToString();

return username==null ? String.Empty : username as String;

}

 

 

set

 

{

HttpContext.Current.Session["UserName"] = value;

}

 

}

 

[+virtorio MVC]

At a guess, either the session object isn't ready at the point you're trying to use it, or there is no variable "UserName" in Session and as such you're calling .ToString() on a null object.

 

You could try:

get
{
  object username= HttpContext.Current.Session["UserName"];
  return username==null ? String.Empty : username.ToString();
}

 

Step thought your code and see where the error is happening, then you'll know the reason it's happening.

[SuperJediMedia]

Any suggestions on how to fix this? Sorry, I am newbie :(

 

Can I put an if statement in this property or it's not necessary?

[+virtorio MVC]

  On 14/11/2014 at 04:27, SuperJediMedia said:

Any suggestions on how to fix this? Sorry, I am newbie :(

 

Can I put an if statement in this property or it's not necessary?

Did you try the change I suggested above?

[notchinese]

Are any of these objects null: HttpContext.Current.Session ???

 

The 2nd line of the getter is fine, you can safely cast null to any object, it won't complain. That said, you don't need to cast it to a string, its already a string.