打开一个Win窗体，但在另一个窗体打开时将其停用

Question

I have a simple WinForm app. For a user to use the app, however, they must login. What I'm trying to do is:

1) open the main form,

2) deactivate it,

3) show the login form,

4) reactivate the main form once the login form is exited and authentication has completed successfully.

I'm looking for some skeleton code just for handling the Win Forms behavior.

Answer 1

在“ Shown”表单事件中，使用ShowDialog()使它成为应用程序的模式。

Answer 2

Here's a rough outline

protected void MainForm_Activated(object sender, EventArgs e)
{
    LoginForm loginForm = new LoginForm();

    if (loginForm.ShowDialog() == DialogResult.OK)
    {
         // proceed with normal flow
    }
    else 
    {
         // let user retry logging in or exit application.
    }
}

and in LoginForm, set this.DialogResult = DialogResult.OK if login was successful; otherwise use this.DialogResult = DialogResult.Cancel