Question

I want to create a context menu using C# that will display next to the node similar to what happens here in Visual Studio:

The code I have now causes the main form to flicker.

private void treeView1_MouseDown(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Right)
    {
        var myForm = new Form {Text = "My Form"};
        myForm.SetBounds(10, 10, 200, 200);

        myForm.Show();
        // Determine if the form is modal.
        if (myForm.Modal == false)
        {
            // Change borderstyle and make it not a top level window.
            myForm.FormBorderStyle = FormBorderStyle.FixedToolWindow;
            myForm.TopLevel = false;
        }
    }            
}

Answer 1

Why not simply use Form.ShowDialog?

From MSDN:

Form.ShowDialog Method

Shows the form as a modal dialog box.