隐藏表单后如何再次显示? [英] How to show a form again after hiding it?

问题描述

我有两种形式.我需要用一个按钮打开第二个表单.当我打开form2时，我将隐藏form1.但是，当我尝试通过按钮再次显示来自form2的form1时，它不起作用.我的form1代码是:

I have two forms. I need to open a second form with a button. When I open form2 I hide form1. However when I try to show form1 again from form2 with a button it doesn't work. My form1 code is:

Form2 form2 = new Form2();        
form2.ShowDialog();

form2内部代码:

Inside form2 code:

Form1.ActiveForm.ShowDialog();

或

Form1.ActiveForm.Show();

或

form1.show(); (form1 doesn't exist in the current context)

不起作用. 我不想打开新表格

doesn't work. I do not want to open a new form

Form1 form1 = new Form1();   
form1.ShowDialog();

我想显示我之前隐藏的表格. 另外，我可以将其最小化到任务栏

I want show the form which I hided before. Alternatively I can minimize it to taskbar

this.WindowState = FormWindowState.Minimized;

并再次从form2最大化它.

and maximize it from form2 again.

Form2.ActiveForm.WindowState = FormWindowState.Maximized;

但是我尝试的方法仍然不起作用. 这些方式有什么问题?

however the way I am trying is again doesn't work. What is wrong with these ways?

推荐答案

您可以尝试(在Form1按钮上单击)

You could try (on Form1 button click)

Hide();
Form2 form2 = new Form2();        
form2.ShowDialog();
form2 = null;
Show();

或(应该可以)

Hide();
using (Form2 form2 = new Form2())       
    form2.ShowDialog();
Show();

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