一、DataGridView绑定数据库之后直接对其进行操作：

1.在按钮添加更新操作代码（只需一行）：

            this.tbTableAdapter.Update(this.abcDataSet2.tb);

其中abc为数据库名，tb为表名

2.在按钮添加删除操作代码：

            DialogResult dlResult = MessageBox.Show(this, "要删除这些记录吗？", "请确认",

                MessageBoxButtons.YesNo,
                MessageBoxIcon.Question,
                MessageBoxDefaultButton.Button1,
                MessageBoxOptions.RightAlign);
            if (dlResult == DialogResult.Yes)
            {
                int j = dataGridView1.SelectedRows.Count;
                int[] l = new int[j];

                int i;

                for (i = 0; i < j; i++)
                {
                    l[i] = dataGridView1.SelectedRows[i].Index;
                }

                int k = 0;

                while (k < j)
                {
                    this.abcDataSet2.tb.Rows[l[k]].Delete();
                    k++;
                }

二、DataGridView绑定数据库，把查询结果进行更新、删除操作后保存到数据库：

1.在按钮添加更新操作代码：

            if (MessageBox.Show("确实要修改数据库吗？", "决策提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)

            {

                DataTable dt = dataGridView1.DataSource as DataTable;

                if (dt != null)
                {
                    try
                    {
                        using (SqlConnection con = new SqlConnection("data source=ksig;initial catalog=AMDMS;user id=sa;pwd=123;"))
                        {
                            SqlDataAdapter da = new SqlDataAdapter("select * from account", con);
                            SqlCommandBuilder scb = new SqlCommandBuilder(da);
                            DataSet ds = new DataSet();
                            da.Fill(ds, "account");
                            da.Update(dt);
                        }
                    }
                    catch (DataException de)
                    {
                        //
                    }
                }
                MessageBox.Show("成功修改数据库！", "恭喜");
            }
            else
            {
                MessageBox.Show("放弃修改数据库！", "系统提示");
            }

2.在按钮添加删除操作代码：

            //在DataGridView1界面上进行可视化删除

            dataGridView1.Rows.Remove(dataGridView1.Rows[dataGridView1.CurrentCell.RowIndex]);
            //把删除后的DataGridView1的结果更新到数据库中
            DataTable dt = dataGridView1.DataSource as DataTable;
            if (dt != null)
            {
                try
                {
                    using (SqlConnection con = new SqlConnection("data source=ksig;initial catalog=AMDMS;user id=sa;pwd=123;"))
                    {
                        SqlDataAdapter da = new SqlDataAdapter("select * from account", con);
                        SqlCommandBuilder scb = new SqlCommandBuilder(da);
                        DataSet ds = new DataSet();
                        da.Fill(ds, "account");
                        da.Update(dt);
                    }
                }
                catch (DataException de)
                {
                    //
                }
            }