Reason for value cannot be null in c#

Question

I'm running application successfully some time before unfortunately I'm getting error in my program.cs shows value cannot null

Answer 1

Because, well, the value cannot be null.

Can't tell much without your code. Post it, maybe?

Answer 2

most variable types cannot by default hold a null value. if you need them to, you can add a question mark at the end of the type definition like so:

int? a = null;

Answer 3

Vijaya Priya Viji yes

Answer 4

shall I share my code here

Answer 5

have you seen this