Object reference not set to an instance of Object

Jaydip Trivedi

Hey, there I want to ask people can any one of you guide me on below mentioned questions.

What happens internally when .net framework returns an error or exception like "Object reference not set to an instance of Object."?

This exception occurs any time when you trying to code something that differs from your guide.

Specifically, I'm asking this because of knowledge purpose only.

5 Replies

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Bhushan Gawale10y ago
Accepted answer
It is basically a System.NullReferenceException,typically happens when you try to access properties or methods of a null object.
You should be able to get details about it here
http://stackoverflow.com/questions/4660142/what-is-a-nullreferenceexception-and-how-do-i-fix-it
http://codebetter.com/raymondlewallen/2005/06/23/system-nullreferenceexception-object-reference-not-set-to-an-instance-of-an-object-3-common-causes-in-vb-net/
Munesh Sharma10y ago
see your object where this exception is cming, its come when your object is null and you dont initilize it
Thiruppathi R10y ago
This is common error.which is come by object has pass empty or null
Nemi Chand10y ago
this is a common error in .net framework. error is saying that you are trying to access null object property.
here is some guideline to resolve this.
capture the whole exception including message, stack trace and inner exception. best way to capture.
try
{
//code here
}
catch(Exception ex)
{
//this is capture the whole exception
Console.WriteLine(ex.ToString());
}
include the pdb files to get more information about the error. e.g line, detail error.
put some informational log
Hope it will help to get closer
Pradeep Sahoo10y ago
This is a very common error .when you are doing an operation on an object and if the object is null at the the object reference not set to an instance comes.