如何在C＃中创建右键单击事件处理程序

Question

I would please like to know how to display a context menu when you right click on the window.

Here is my code so far :

private void ShowContextMenu_RightClick(object sender, EventArgs e)
{
    toolStripMenuItem5.Visible = true;
}
private void toolStripMenuItem5_Click(object sender, EventArgs e)
{
    MessageBox.Show("Hi there this is my 3rd app which is *animation*.", "Programmed by D & K");
}

Answer 1

AFAIK there is no direct RightClick event in winforms. You can use the mousedown event to achieve this

  private void toolStripButton1_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Right)
            {
                MessageBox.Show("Hi there this is my 3rd app which is *animation*.", "Programed by D & K");
            }
        }

Answer 2

in form cs file you can attach your context menu like this..

    public Form1()
    {
        InitializeComponent();

        //Create right click menu..
        ContextMenuStrip s = new ContextMenuStrip();

        // add one right click menu item named as hello           
        ToolStripMenuItem hello = new ToolStripMenuItem();
        hello.Text = "Hello";

        // add the clickevent of hello item
        hello.Click += hello_Click;

        // add the item in right click menu
        s.Items.Add(hello);

        // attach the right click menu with form
        this.ContextMenuStrip = s;
    }

    void hello_Click(object sender, EventArgs e)
    {
        MessageBox.Show("Hello Clicked");
    }

Answer 3

You should use MouseDown . Then you can get the clicked button with e.Button and the coordinates with eX and eY .

private void Form1_MouseDown(object sender, MouseEventArgs e)
{
    MessageBox.Show(e.Button.ToString() + " " + e.X + " " + e.Y);
}

Answer 4

Add a ContextMenuStrip control to the form (note, it does not display on the form but is instead shown at the bottom of the designer).

In the form's ContextMenuStrip property, choose the name of the ContextMenuStrip control you just added to the form.

That's it. HansPassant stated this in a comment to the question but I think it is being overlooked.

The ContextMenuStrip property is a property of many UI controls that you would use the same technique for.