1.winform 在panel中加入form，并使form随着panel的变化而变化。主要设置form的dock属性
代码如下：
1 private void btnCounter_Click(object sender, EventArgs e)
2 {
3 Counter c = new Counter();
4 c.TopLevel = false;
5 panel1.Controls.Add(c);
6 c.Dock = DockStyle.Fill;
7 c.Show();
8 }
2 {
3 Counter c = new Counter();
4 c.TopLevel = false;
5 panel1.Controls.Add(c);
6 c.Dock = DockStyle.Fill;
7 c.Show();
8 }