private void Form1_Load(object sender, EventArgs e)        {            DataTable table = new DataTable("Student");            DataColumn studentID = new DataColumn("studentID", typeof(string));            table.Columns.Add(studentID);            DataColumn studentName = new DataColumn("studentName", typeof(string));            table.Columns.Add(studentName);            DataColumn studentAmount = new DataColumn("studentAmount", typeof(decimal));            table.Columns.Add(studentAmount);            DataRow dr1 = table.NewRow();            dr1["studentID"] = "2010092601";            dr1["studentName"] = "张三";            dr1["studentAmount"] = new decimal(3500.00);            table.Rows.Add(dr1);            DataRow dr2 = table.NewRow();            dr2["studentID"] = "2010092602";            dr2["studentName"] = "李四";            dr2["studentAmount"] = new decimal(4000.00);            table.Rows.Add(dr2);            dataGridView1.DataSource = table;            dataGridView1.Columns[2].Width = 150;            dataGridView1.Columns[2].DefaultCellStyle.Format = "c";            dataGridView1.Columns[2].SortMode = DataGridViewColumnSortMode.NotSortable;            dataGridView1.Columns[2].DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleRight;            dataGridView1.Columns[2].HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleRight;            dataGridView1.Columns[2].HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleLeft;            dataGridView1.Columns[2].HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter;        }