ADO.NET - The Size property has an invalid size of 0

Question

I\'m trying to get output value from DB via ADO.NET. There\'s a client code:

    using (var connection = new SqlConnection(ConnectionString))
    {
                


        

Answer 1

Incidentally, setting the size property of an output parameter is necessary even if it isn't a string-type parameter. For example, if you are using a System.Data.SqlDbType.Int, you should set the size to be 4.