dataGridView上下文菜单函数

本文关键字：函数 菜单 上下文 dataGridView | 更新日期: 2023-09-27 18:19:43

我已经将以下代码添加到我的论坛：

    private void dataGridView1_MouseClick(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Right)
        {
            ContextMenu a = new ContextMenu();
            a.MenuItems.Add(new MenuItem("Google"));
            a.MenuItems.Add(new MenuItem("Yahoo"));
            int currentMouseOverRow = dataGridView1.HitTest(e.X, e.Y).RowIndex;
            if (currentMouseOverRow >= 0)
            {
                a.MenuItems.Add(new MenuItem(string.Format("", currentMouseOverRow.ToString())));
            }
            a.Show(dataGridView1, new Point(e.X, e.Y));
        }
    }
    private void dataGridView1_CellMouseEnter(object sender, DataGridViewCellEventArgs e)
    {
        currentMouseOverRow = e.RowIndex;
    }
    private void dataGridView1_CellMouseLeave(object sender, DataGridViewCellEventArgs e)
    {
        currentMouseOverRow = -1;
    }

但是，如何将该函数添加到上下文菜单选项中呢？

对于谷歌，

    Process.Start("https://www.google.com");

对于雅虎，

    Process.Start("https://www.yahoo.com");

等等。

dataGridView上下文菜单函数

为什么不在表单loads时添加ContextMenu权限，而不是每次用户右键单击DataGridView时，也就是说，每次用户右击DatGridView时，都必须添加Context Menu。

其次，用DataGridView代替ContextMenu制作一个更适合家庭使用的ContextMenuStrip。所以，你的代码看起来像：

ContextMenuStrip a = new ContextMenuStrip();
public Form1()
{
   InitializeComponent();
   this.Load += new EventHandler(Form1_Load);
}
void Form1_Load(object sender, EventArgs e)
{
   Image img = null;
   a.Items.Add("Google", img, new System.EventHandler(ContextMenuClick));
   a.Items.Add("Yahoo", img, new System.EventHandler(ContextMenuClick));
   dataGridView1.ContextMenuStrip = a;
}

那么你的EventHandler会是这样的：

private void ContextMenuClick(Object sender, System.EventArgs e)
 {
   switch (sender.ToString().Trim())
    {
      case "Google":
        Process.Start("https://www.google.com");
        break;
      case "Yahoo":
        Process.Start("https://www.yahoo.com");
        break;
    }
 }

你的DataGridView Mouse Click处理程序会是这样的：

void dataGridView1_MouseClick(object sender, MouseEventArgs e)
 {
   if (e.Button == MouseButtons.Right)
     {
       int currentMouseOverRow = dataGridView1.HitTest(e.X, e.Y).RowIndex;
       if (currentMouseOverRow >= 0)
         {
           a.Items.Add(string.Format("", currentMouseOverRow.ToString()));
         }
       a.Show(dataGridView1, new Point(e.X, e.Y));
     }
 }

菜单项必须使用ClickEvent：

//menu items constructor
a.MenuItems.Add(new MenuItem("Google", new System.EventHandler(this.MenuItemClick)));
a.MenuItems.Add(new MenuItem("Yahoo", new System.EventHandler(this.MenuItemClick)));
private void MenuItemClick(Object sender, System.EventArgs e)
{
     var m = (MenuItem)sender;
     if (m.Text == "Google")
     {
         Process.Start("https://www.google.com");
     }
}
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