private void button1_Click(object sender, EventArgs e)
        {
            DataTable table = new DataTable();
            table.Columns.Add("部门ID");
            table.Columns.Add("部门名称");
            table.Columns.Add("部门所属");
            table.Rows.Add(new object[] { 12,"客服部",10 });
            table.Rows.Add(new object[] { 13, "综管部", 11 });
            table.Rows.Add(new object[] { 14, "运维部", 13 });

            foreach (DataRow drow in table.Rows)
            {
                foreach (DataRow row in table.Rows)
                {
                    if (drow["部门所属"].ToString().Trim() == row["部门ID"].ToString().Trim())
                    {
                        drow["部门所属"] = row["部门名称"].ToString();
                    }
                }
            }
            dataGridView1.DataSource = table;
        }