用户的C#表单问题 [英] c# form problem with user

问题描述

你好！首先，抱歉我的英语不好.我有三个类，需要将var userId保存在表单中.头等舱是:

Hello! First Sorry for my bad English. I have three classes and I need to save my var userId in my form . First Class is:

private void buttonOk_Click(object sender, EventArgs e)
       {


           UserEntity user = new UserEntity(textBoxUsername.Text,textBoxPassword.Text);
           if (user.getUser()) {


               MainPanel mp = new MainPanel();
               mp.User = user;
               mp.Show();

           }

单击按钮后，我们进入第二类:

When the button is clicked we go to Second class:

private void ProfitPanelButton_Click(object sender, EventArgs e)
       {

           UserEntity user = new UserEntity();
           if (user.getUser())
           {

               ProfitPanel pp = new ProfitPanel();
               pp.User = user;
               pp.Show();

           }
           else
           {
               MessageBox.Show("ERROR");
           }


       }

当我们单击ProfitPanelButton时，转到利润并将利润插入DB.


使用代码从第一个按钮直接转到第三个按钮没有任何问题:

When We clicked ProfitPanelButton go to profit and insert Profit into DB .


I don''t have any problem with going from 1st button directly to 3rd with code :

private void buttonOk_Click(object sender, EventArgs e)
    {


        UserEntity user = new UserEntity(textBoxUsername.Text,textBoxPassword.Text);
        if (user.getUser()) {

            ProfitPanel pp = new ProfitPanel();
            pp.User = user;
            pp.Show();


     }

    }

您能帮我解决这个问题还是给我一些想法.谢谢.

Can you help me to fix this problem or give me some idea. Thanks.

推荐答案

这里没有明确的问题，但是如果您调用Show(显示)，它将创建无模式对话框，如果您使用局部变量来执行此操作，立即失去对该对象的引用，这将阻止您与该对象进行交互.将其设置为成员变量，然后编辑您的问题，以使您清楚地提出问题.

There''s no clear question here, but if you call Show, which creates a modeless dialog, if you do it with a local variable, you lose your reference to that object right away, which stops you from interacting with it. Make it a member variable, then edit your question so you ask something clearly.

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