NullReference Exception in C#
289
What is a NullReferenceException, and how do I fix it?
149666
Why can't a null-reference exception name the object that has a null reference?
29684
How to check if an object is nullable?
13109
Null or default comparison of generic argument in C#
108856
Passing reference type in C#
31537
Checking for null before event dispatching... thread safe?
89755
Why is "throw null" not creating a compilation error in Java?
58054
When is it OK to catch NullPointerException?
98908
Is it good practice to set variables to null when they are no longer needed?
94938
.NET : How do you get the Type of a null object?
79477
Why is "null" present in C# and Java?
96453
Caught Throwable or Exception is null
10581
Avoiding NullPointerException in Java
119573
NullPointerException in Java with no StackTrace
45869
Why null cast a parameter?
144658
System.NullPointerException: Attempt to de-reference a null object ,sravn
107423
After ExecuteScalar: Object reference not set etc