主窗体隐藏了，如何在子窗体里让它显示

单击按钮主窗体打开子窗体,并隐藏本身

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        this.Hide();
        Form2 f = new Form2(this);
        f.Show();
    }
}

单击按钮子窗体关闭,并显示主窗体

public partial class Form2 : Form
{
    private Form frm;
    public Form2(Form1 _frm)
    {
        this.frm = _frm;
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        this.Close();
        this.frm.Show();
    }
}

从网易博客(http://cxwstar.blog.163.com/blog/static/48468763201121402037629/)迁移,原发表于2011年3月14日.