C#dataGridView控件问题内容条件显示

Question

如图片所示，dataGridView添加了如下的列，默认第三列开始后面的4列SHORT-NAME，CATEGORY，ARRAY-SIZE，ARRAY-SIZE-SEMANTICS的不可见，即Visible属性为false；已经设置好。

现在需求如下，当第二列的值，选中ARRAY之后，
从第三列开始后面的4列SHORT-NAME，CATEGORY，ARRAY-SIZE，ARRAY-SIZE-SEMANTICS的Visible属性变为true

Answer 1

 using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Q691015
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            dataGridView1.Columns.Add(new DataGridViewComboBoxColumn() { Name = "col1", HeaderText = "category", ValueType = typeof(string) });
            dataGridView1.Columns.Add("col2", "short name");
            dataGridView1.Columns[1].Visible = false;
            dataGridView1.CellEnter += new DataGridViewCellEventHandler(dataGridView1_CellEnter);
            dataGridView1.CellBeginEdit += new DataGridViewCellCancelEventHandler(dataGridView1_CellBeginEdit);
            dataGridView1.EditingControlShowing += new DataGridViewEditingControlShowingEventHandler(dataGridView1_EditingControlShowing);
        }

        void dataGridView1_CellBeginEdit(object sender, DataGridViewCellCancelEventArgs e)
        {
            //防止用户切换到另外一行，并且这一列选择的不是array
            if (dataGridView1.Rows[e.RowIndex].Cells[0].Value != null && e.ColumnIndex != 0)
            {
                if (dataGridView1.Rows[e.RowIndex].Cells[0].Value.ToString() != "array")
                {
                    e.Cancel = true;
                }
            }
        }

        void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
        {
            if (e.Control is ComboBox)
            {
                var cbo = e.Control as ComboBox;
                cbo.TextChanged += new EventHandler(cbo_TextChanged);
            }
        }

        //设置是否可见
        void cbo_TextChanged(object sender, EventArgs e)
        {
            if ((sender as ComboBox).Text == "array")
                dataGridView1.Columns[1].Visible = true;
            else
                dataGridView1.Columns[1].Visible = false;
        }

        void dataGridView1_CellEnter(object sender, DataGridViewCellEventArgs e)
        {
            if (e.ColumnIndex == 0)
            {
                var cell = dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex] as DataGridViewComboBoxCell;
                cell.Items.Clear();
                cell.Items.Add("none");
                cell.Items.Add("array");
            }
        }
    }
}