C#datagridview根据条件触发编辑与不可编辑

Question

如图所示，C#datagridview，第二列选择了ARRAY则后面4列必须填入内容，不许为空。

如果选择了不是ARRAY，则后面的4列灰显，不可以编辑。

应该用到datagridview哪个事件？？

Answer 1

添加CellEndEdit事件，用下面的代码就行

        private delegate void setState();
        private void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)
        {
            DataGridViewCell cur = dataGridView1.CurrentCell;
            bool setFucos = false;
            if (e.ColumnIndex == 1)
            {
                bool readOnly = cur.Value.ToString() != "ARRAY";
                for (int i = 2; i < 6; i++)
                {
                    dataGridView1.CurrentRow.Cells[i].ReadOnly = readOnly;
                    dataGridView1.CurrentRow.Cells[i].Style.BackColor = readOnly ? Color.Gray : Color.White;
                    if (!readOnly)
                    { //设置下一个单元格获取焦点
                        setFucos = true;
                        cur = dataGridView1.CurrentRow.Cells[2];
                    }
                }
            }
            if (e.ColumnIndex > 1 && e.ColumnIndex < 6)
            {

                if (cur.Value == null || cur.Value.ToString() == "")
                {
                    MessageBox.Show("不能为空！");
                    setFucos = true;
                }
            }
            if (setFucos)
            {//重置焦点
                System.Timers.Timer t = new System.Timers.Timer(100);
                t.Elapsed += (tsender, te) =>
                {
                    t.Dispose();
                    this.Invoke(new setState(() =>
                    {

                        dataGridView1.CurrentCell = dataGridView1.CurrentRow.Cells[2];
                        dataGridView1.BeginEdit(true);
                    }));
                };
                t.Enabled = true;
            }
        }