VB.NET System.NullReferenceException
289
What is a NullReferenceException, and how do I fix it?
6882
try catch exception always returns null
124080
How does the assignment of the null literal to a System.Nullable type get handled by .Net (C#)?
64332
avoiding null reference exceptions
65383
Is it Possible to Return a Reference to a Variable in C#?
54143
Why is the default value of the string type null instead of an empty string?
7935
CS0120: An object reference is required for the nonstatic field, method, or property 'foo'
156078
handling dbnull data in vb.net
109544
Memory leak in VB
94938
.NET : How do you get the Type of a null object?
128903
ExecuteScalar throws NullReferenceException
73430
C# .Equals(), .ReferenceEquals() and == operator
156400
NullReferenceException when using NUnit
96453
Caught Throwable or Exception is null
37988
System.NullPointerException: Attempt to de-reference a null object:
91943
What is the use of "ref" for reference-type variables in C#?
92187
Unable to cast object of type 'System.DBNull' to type 'System.String`