public partial class Form5 : Form
    {
        public Form5()
        {
            InitializeComponent();
        }        private void button1_Click(object sender, EventArgs e)
        {
            Form5.ActiveForm.Size.Width = 30;        }
    }我想通过按钮改变我当前的窗体大小.请问这样怎么会有错呢?