c#點擊按鈕跳轉到另一窗口後將本窗口關閉

Form1是主窗口.Form2是子窗口.
實現點擊按鈕後彈出Form2.然後主窗口關閉.退出Form2時主窗口再彈出來供其他操作.

1.主窗口不能關閉，只能影藏，給form1設置焦點，當窗體激活時發生

                Form2 myform = new Form2();             
                myform.Show();
                this.Opacity = 0;

 

        private void Form1_Activated(object sender, EventArgs e)
        {
            this.Opacity = 100;
        }

2.傳遞值：

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.Opacity = 0;
            Form2 f2 = new Form2();
            f2.ShowDialog();
            this.Opacity = f2.ss;
        }
    }
}

namespace WindowsApplication1
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.Close();
        }
        public int ss
        {
            get
            {
                return 100;
            }
        }
    }
}

3.C#關閉窗口時把之前隱藏的主窗口一起關閉：

Application.Exit();

 

 

4.在按鈕後彈出Form2.然後主窗口進行隱藏.退出Form2時主窗口再顯示出來

Form2 fm2 = new Form2();
fm2.Show();
// 不在任務欄顯示 
this.ShowInTaskbar = false;
// 窗體透明 
this.Opacity = 0; //後面的取值0~100 ,0表示透明