[RESOLVED] Using Dispose and/or null on objects

[Cavar]

This is a general .NET question, but I provided C# code.

If I have an object that implements IDisposable and I call the .Dispose method, should I also set the object to null? I know about the benefits the "using" keyword, so no need to explain it.

Ex:

Should I do this...

SqlCommand cmd = new SqlCommand();

...do stuff with command here....

cmd.Dispose();

cmd = null;

...or...

SqlCommand cmd = new SqlCommand();

...do stuff with command here....

cmd.Dispose();

...or...

SqlCommand cmd = new SqlCommand();

...do stuff with command here....

cmd = null;

Thanks in advance.
CT