Execute Parameterized SQL StoredProcedure via ODBC

Question

From within a C# WinForms app I must execute a parameterized Stored Procedure on a MS SQL Express Server. The Database Connection works, the Procedure works either, but I ge

Answer 1

 private void button1_Click(object sender, EventArgs e)
 {
    OdbcCommand cmd = new OdbcCommand(" call prc_st(?)",con);
    cmd.Parameters.Add(new OdbcParameter("@id", "1"));
    cmd.CommandType = CommandType.StoredProcedure;
    OdbcDataAdapter adp = new OdbcDataAdapter(cmd);
    DataSet ds = new DataSet();
    adp.Fill(ds);

 }