更新 DataGridView 中修改过的Cell值到数据库中

//此为MYSQL数据库样例，MSSQL数据库只需修改数据库链接关键字等即可！DataSet ds = new DataSet();MySqlDataAdapter da;private void Form1_Load(object sender, EventArgs e){            MySqlConnection cn = new MySqlConnection();cn.ConnectionString = @"Data Source=.;Initial Catalog=Sample;Integrated Security=True"; da = newMySqlDataAdapter("SELECT 报表名称,报表金额 FROM 财务信息表", cn);da.Fill (ds,"Table"); dataGridView1.DataSource = ds.Tables["Table"]; }//更新数据的按钮 private void button1_Click(object sender, EventArgs e) {    try { MySqlCommandBuilder com = new MySqlCommandBuilder(da); da.Update(ds.Tables["Table"]); MessageBox.Show("数据更新成功!");     }     catch (Exception ex)     { MessageBox.Show("数据更新失败!");     } }