Stored procedure or function expects parameter which was not supplied

Question

I am trying to insert data into a SQL Server database by calling a stored procedure, but I am getting the error

*Procedure or function \'Insertion\'

Answer 1

"There's only one Add method that's obsoleted, the method that accepts a string for the parameter name and an object for the value. As you noted, you should call AddWithValue instead for this scenario."

http://social.msdn.microsoft.com/Forums/en-US/15bb16a4-0cf1-4289-b677-3b9d98f09298/parametersaddwithvalue-output-parameter-in-adonet-2?forum=adodotnetdataproviders

Not all Parameter.Add methods are depreciated. How are you suppose to make an OUTPUT parameter? You have to use Parameter.Add for this.