private DataSet dataset = new DataSet();
        private SqlDataAdapter dataadapter;

        private void Form2_Load(object sender, EventArgs e)
        {
            dataGridView1.RowHeadersVisible = false;
            string sql = string.Format("select id,姓名,地址,数学,语文,计算机,英文,体育 from 学生成绩表");
            string connstring = "Data Source=.;Initial Catalog=wang;Integrated Security=true";
            SqlConnection connection = new SqlConnection(connstring);
            dataadapter = new SqlDataAdapter(sql, connection);
            dataadapter.Fill(dataset);
            dataGridView1.DataSource = dataset.Tables[0];
        }
        private void toolStripButton2_Click(object sender, EventArgs e)
        {
            DialogResult result = MessageBox.Show("确定要将修改保存到数据库吗？","提示",MessageBoxButtons.OKCancel,MessageBoxIcon.Question);
            if(result==DialogResult.OK)
            {
                SqlCommandBuilder builder = new SqlCommandBuilder(dataadapter);
                dataadapter.Update(dataset);
            }
        }

我是窗体加载的时候dataGridView1显示数据集dataset，然后再在dataGridView1里面更改数据，然后在窗体上面加一个按键，在按键的click事件里面建立SQL 新建命令对数据库进行更新。请好心人帮忙查看为什么上面的代码不行？

能详细到代码不，嘿嘿

试过了，不行

e