Insert Null value to the Integer Column

Question

Through the front end I want to insert NULL value to the Column whose DataType is Int.

I used like this:

POP.JobOrderID = Convert.ToInt32(DBNull.Value);

But I cannot Insert Null value, it throws error such as "Object cannot be cast from DBNull to other types":

How to insert NULL values?

Answer 1

if you wish to do it POP.JobOrderID should be type int? (nullable int) not int