C# ASP.Net Parameters.AddWithValue rejecting null value for parameter

Question

I am populating tables using a stored procedure. The table allows a \'null\' for the middle initial of the name, but I\'m getting the following error message:

Answer 1

There are two options here:

Modify you stored procedure and make @MiddleInitial param optional (which is currently not optional that's why error is thrown)

@MiddleInitial nvarchar(10) = NULL

Or add following line to your code:

cmd.Parameters.AddWithValue("@MiddleInitial", null);