Question

简单简介：我有一个程序，需要用户进行身份验证才能访问或创建带有用户名和密码的文件。我有表格A和表格B;表单A是我程序的主窗口，它有一个指向表单B的按钮，它是登录表单。截至目前，我必须启动表单A，然后单击按钮转到表单B，因为必须登录文件。我的程序正在识别人是否已登录，并且它启用了允许我创建新文件或已创建新文件的按钮（默认情况下禁用它们，并且只有在首次成功验证时才启用）。

如何在打开表单A之前创建表单来检查身份验证？

如果我不够清楚，请告诉我......

现在，我尝试在表单A之前初始化表单B：

public MainWindow()
{
    AuthenticationWindow login = new AuthenticationWindow();
    login.ShowDialog();

    InitializeComponent();
}

问题在于，当我这样做时，我的程序在验证到位后没有启用我的按钮。

我尝试在初始化表单之前检查身份验证：

public MainWindow()
{
    AuthenticationWindow login = new AuthenticationWindow();
    login.ShowDialog();

    if (storedAuth != null)
    {
        // Making Deleting and Adding possible
        // when file was opened.
        tsmiOpen.Enabled = true;
        tsmiNew.Enabled = true;
    }

    InitializeComponent();
}

但我仍然无法打开或创建文件。似乎程序没有检查经过身份验证的用户。

这是我的代码，可以在验证后启用我的按钮：

private void tsmiAuthenticate_Click(object sender, EventArgs e)
{
    AuthenticationWindow authWindow = new AuthenticationWindow();

    authWindow.ShowDialog();
    storedAuth = authWindow.Result;

    if (storedAuth != null)
    {

        tsmiOpen.Enabled = true;
        tsmiNew.Enabled = true;
    }
}

我缩小的代码：

namespace Password_Manager
{
    public partial class MainWindow : Form
    {
        private AuthenticateUser storedAuth;
        private HashPhrase hash = new HashPhrase();

        private bool newSelected, openSelected;

        public MainWindow()
        {
            AuthenticationWindow login = new AuthenticationWindow();
            login.ShowDialog();

            if (storedAuth != null)
            {
                // Making Deleting and Adding possible
                // when file was opened.
                tsmiOpen.Enabled = true;
                tsmiNew.Enabled = true;
            }

            InitializeComponent();
        }

        private void tsmiAuthenticate_Click(object sender, EventArgs e)
        {
            AuthenticationWindow authWindow = new AuthenticationWindow();

            // Displaying Authenticate Window.
            // Not allowing switching between forms.
            authWindow.ShowDialog();
            storedAuth = authWindow.Result;


            if (storedAuth != null)
            {
                // Making Deleting and Adding possible
                // when file was opened.
                tsmiOpen.Enabled = true;
                tsmiNew.Enabled = true;
            }
        }

        private void tsmiAddEntry_Click(object sender, EventArgs e)
        {
            // Checking if the file is new or opened.
            // This matter because we need to
            // have appropriate path to the file.
            if (openSelected)
            {
                AddEntryWindow addWindow = new AddEntryWindow
                    (this, storedAuth.UserName, storedAuth.Password, 
                    ofdOpenFile.FileName);

                // Displaying Add Entry Window.
                // Not allowing switching between forms so I am using ShowDialog().
                addWindow.ShowDialog();
            }
            if (newSelected)
            {
                AddEntryWindow addWindow = new AddEntryWindow
                    (this, storedAuth.UserName, storedAuth.Password, 
                    sfdNewFile.FileName);

                // Displaying Add Entry Window.
                // Not allowing switching between 
                // forms so I am using ShowDialog().
                addWindow.ShowDialog();
            }
        }

        private void tsmiDeleteEntry_Click(object sender, EventArgs e)
        {
            // Checking if the file is new or opened.
            // This matter because we need to
            // have appropriate path to the file.
            if (openSelected)
            {
                // When open file.
                DeleteEntryWindow deleteEntyWindow = new DeleteEntryWindow
                    (this, storedAuth.UserName,
                    storedAuth.Password, ofdOpenFile.FileName);
                deleteEntyWindow.ShowDialog();
            }
            else if (newSelected)
            {
                // When new file.
                DeleteEntryWindow deleteEntyWindow = new DeleteEntryWindow
                    (this, storedAuth.UserName,
                    storedAuth.Password, sfdNewFile.FileName);
                deleteEntyWindow.ShowDialog();
            }
        }
    }
}

Answer 1

我的猜测是你的InitializeComponent（）代码将你的按钮'.Enabled属性重置为false。此方法中的代码是由VS.中的表单设计器创建的代码。

试试这个......

public MainWindow()
        {
            InitializeComponent();
            AuthenticationWindow login = new AuthenticationWindow();
            login.ShowDialog();
            storedAuth = login.Result;


            if (storedAuth != null)
            {
                // Making Deleting and Adding possible
                // when file was opened.
                tsmiOpen.Enabled = true;
                tsmiNew.Enabled = true;
            }


        }

在表单A之前启动表单B.为什么表单A不会看到用户身份验证信息？

1 个答案: