C＃.net Winform -Multiple forms show＆amp;隐藏

Question

我在visual studio 2008中使用c＃.net获取了3个表单。在Form1中有2个按钮，如果我点击第一个按钮，那么Form2将显示＆amp;同时我点击了第二个按钮，然后Form3将显示＆amp;已打开的Form2将隐藏。

Answer 1

//loop through all open forms
foreach (Form f in Application.OpenForms)
{
    if (f.Name != "Form1") //if it's not Form1
        f.Hide(); //then hide it (or close)
}
//show the form you want (ex: Form3)
new Form3().Show();