Question

I am using VSTS 2008 + C# + .Net 3.5 + ADO.Net. Here is my code and related error message. The error message says, @Param1 is not supplied, but actually it is supplied in my code. Any ideas what is wrong?

System.Data.SqlClient.SqlException:
Procedure or function ‘Pr_Foo’ expects
parameter ‘@Param1’, which was not
supplied.

class Program
{
        private static SqlCommand _command;
        private static SqlConnection connection;

        private static readonly string _storedProcedureName = "Pr_Foo";
        private static readonly string connectionString = "server=.;integrated Security=sspi;initial catalog=FooDB";

        public static void Prepare()
        {
            connection = new SqlConnection(connectionString);
            connection.Open();
            _command = connection.CreateCommand();
            _command.CommandText = _storedProcedureName;
            _command.CommandType = CommandType.StoredProcedure;
        }

        public static void Dispose()
        {
            connection.Close();
        }

        public static void Run()
        {
            try
            {
                SqlParameter Param1 = _command.Parameters.Add("@Param1", SqlDbType.Int, 300101);
                Param1.Direction = ParameterDirection.Input;
                SqlParameter Param2 = _command.Parameters.Add("@Param2", SqlDbType.Int, 100);
                portal_SiteInfoID.Direction = ParameterDirection.Input;
                SqlParameter Param3 = _command.Parameters.Add("@Param3", SqlDbType.Int, 200);
                portal_RoleInfoID.Direction = ParameterDirection.Input;

                _command.ExecuteScalar();
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
            }
        }

        static void Main(string[] args)
        {
            try
            {
                Prepare();

                Thread t1 = new Thread(Program.Run);
                t1.Start();
                t1.Join();

                Dispose();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message + "\t" + ex.StackTrace);
            }
        }
    }

Thanks in advance,

George

Answer 1

Try to replace your function by below code and check :

public static void Run()
        {
            try
            {
                _command.Parameters.AddWithValue("@Param1", 300101);
                _command.Parameters.AddWithValue("@Param2", 100);
                _command.Parameters.AddWithValue("@Param3", 200);

                _command.ExecuteScalar();
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
            }
        }