// 这是一个 查询 MYSQL 数据库的 的一个函数  参数 SqlText 是 查询 MYSQL 命令

public DataTable Query(string SqlText)
            {

                conn.Open();//打开数据库连接

                //防止乱码
             

                MySQLCommand comText = new MySQLCommand(SqlText, conn);
               comText. ExecuteNonQuery();

                    MySQLDataAdapter ada = new MySQLDataAdapter(comText);
                DataTable ds = new DataTable();
                            
               

                   try
                {
                    conn.Open();
                  
                    MySQLCommand commn = new MySQLCommand("set names gb2312", conn);
                   
                    commn.ExecuteNonQuery();
                                   
                    ada.Fill(ds);    // 程序执行到这 就结束了！ 求原因！
                      conn.Close();
                                                    

                 }
                catch (Exception ex)
                {
                   // Response.Write(ex.Message.ToString());
                    MessageBox.Show("错误"," ");
                }  
               //关闭数据库
                conn.Close();

                return ds;

               
            }