c#对话框练习

有关对话框的练习小程序。 private void triangle_Click(object sender, EventArgs e) { triangle nForm=new triangle(); nForm.Show (); } private void square_Click(object sender, EventArgs e) { square nForm = new square(); nForm.Show(); } private void circle_Click(object sender, EventArgs e) { circle nForm = new circle(); nForm.Show(); } private void button4_Click(object sender, EventArgs e) { Application.Exit(); } private void button1_Click(object sender, EventArgs e) { Form1 nForm = new Form1(); nForm.Show(); } } }