父母子女形式 [英] parent and child form

问题描述

向大家问好
我以form1作为父母，而我的孩子则是form2
在form1的按钮单击事件上，显示了form2的一个实例，并且该按钮被拒绝以不显示另一个实例，我想在form2的示例关闭时再次启用该按钮，我的用户可以单击它.
在form2的关闭表单上，我编写此代码

hello to all
i have form1 as parent and my child form is form2
on a button click event of form1 , an instance of form2 shows and the button is disabeld to dont show another instance , i want to when sample of form2 is closing the button is enabeled again and my user can click it on.
on the form closing of form2 i write this code

private form2_closing(object sender , formclosingeventargs e)
{
form1.buttonname.enabeld=true;

}

但这不起作用
请帮帮我.
谢谢.

but it does not work
please help me.
Thanks.

推荐答案

更改它:将处理程序移到form1中:
Form1按钮单击事件:

Change it: move the handler into form1:
Form1 button click event:

Form2 f = new Form2();
f.FormClosing += new FormClosingEventHandler(Form2_FormClosing);
myButton.Enabled = false;
f.Show();

然后将处理程序添加到Form1:

Then add the handler to Form1:

void Form2_FormClosing(object sender, FormClosingEventArgs e)
    {
    myButton.Enabled = true;
    }

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