C#form1的button怎么还原form2

[harukalove]

我form2最小化后
点击form1里的button怎么让form2还原

[恋上微笑的天使]

//判断是否有打开 public static Form ExistedForm(Type type) { return Application.OpenForms.Cast<Form>().FirstOrDefault(form => form.GetType() == type); } var isExist = CommonOperation.ExistedForm(typeof(Frm2)); if (isExist == null) { Frm2.show(); } else { isExist.WindowState = FormWindowState.Normal; isExist.Activate(); }

[恋上微笑的天使]

这样也可以 private Form ExistedForm(Type type) { foreach (Form form in MdiChildren) { if (form.GetType() == type) return form; } return null; }

[harukalove]

引用 1 楼 loveme_muzi 的回复:

//判断是否有打开 public static Form ExistedForm(Type type) { return Application.OpenForms.Cast<Form>().FirstOrDefault(form => form.GetType() == type); } var isExist = CommonOperation.ExistedForm(typeof(Frm2)); if (isExist == null) { Frm2.show(); } else { isExist.WindowState = FormWindowState.Normal; isExist.Activate(); }

var isExist = CommonOperation.ExistedForm(typeof(Frm2)); 我这里 CommonOperation上下文不存在 是不是缺少了引用using frm2也报错 不过我已经解决了

Form2 fm2 = new Form2();
if (fm2.Visible == false)  
{ 
                fm2 = new Form2();
}
 else
            {
                fm2.WindowState = FormWindowState.Normal;
            }