Esquema do procedimento armazenado

public static DataTable SchemaReader(string tableName) 
{      
  string sql = "MySP";//replace this with your store procedure name      
  conn.Open();      
  SqlCommand cmd = new SqlCommand(sql, conn);
  cmd.CommandType = CommandType.StoredProcedure;      
  SqlDataReader reader = cmd.ExecuteReader();       
  DataTable schema = reader.GetSchemaTable();       
  reader.Close();      
  conn.Close();      
  return schema; 
}