Some times we need to make some data type to null. Likein some cases like stored procedure in database.We can do it in C# very easily. by just putting ?sign in’
the definition like below:
int? a;
that’s it! you have created a value data type with null
database. If you don’t supply a value to the int a thenit will remain null.
You can use this for any value data type like short,single,
double,long,decimal etc.
Happy Programming…