如何在C_中的同一点添加标签apon鼠标?

public Form1()
{
    InitializeComponent();
    MouseClick += new MouseEventHandler(Form1_MouseClick);
}

private void Form1_MouseClick (object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Right)
    {
        ContextMenuStrip ctxMenu = new ContextMenuStrip();

        // following line creates an anonymous delegate
        // and captures the "e" MouseEventArgs from 
        // this method
        ctxMenu.Items.Add(new ToolStripMenuItem(
           "Insert info", null, (s, args) => InsertInfoPoint(e.Location)));

        ctxMenu.Show(this, e.Location);
    }
}

private void InsertInfoPoint(Point location)
{
    // insert actual "info point"
    Label lbl = new Label()
    {
        Text = "new label",
        BorderStyle = BorderStyle.FixedSingle,
        Left = location.X, Top = location.Y
    };
    this.Controls.Add(lbl);
}

    int xValue=0, yValue=0;
    private void Form1_MouseClick(object sender, MouseEventArgs e)
    {
        xValue = e.X;
        yValue = e.Y;
        Button btn = new Button();
        btn.Name = "Sample Button";
        this.Controls.Add(btn);
        btn.Location = new Point(xValue, yValue);
    }