Question

所以我要做的是在WPF中创建一个基本的char替换密码，但由于某种原因，当我按Enter键时，结果框不会更新。任何人都可以看到我在下面的C＃代码中做错了什么？

public partial class MainWindow : Window
{
    public static string PassingEncrypt;
    public static string PassingDecrypt;
    string plainText;

    public MainWindow()
    {
        InitializeComponent();
        string key = "=2/3E*45-`~6<>!,.7+8[]9|:0";
        plainText = EncryptBox.Text;
        string cipherText = Encrypt(plainText, key);
        string decryptedText = Decrypt(cipherText, key);

        EncryptResult.Text = cipherText;
        DecryptResult.Text = decryptedText;
    }

    private void EncryptBox_TextChanged(object sender, TextChangedEventArgs e)
    {
        this.EncryptBox = sender as TextBox;
        plainText = EncryptBox.Text;
    }

    static string Encrypt(string plainText, string key)
    {
        char[] chars = new char[plainText.Length];

        for (int i = 0; i < plainText.Length; i++)
        {
            if (plainText[i] == ' ')
            {
                chars[i] = ' ';
            }
            else
            {
                int j = plainText[i] - 97;
                chars[i] = key[j];
            }
        }
        return new string(chars);
    }

    static string Decrypt(string cipherText, string key)
    {
        char[] chars = new char[cipherText.Length];

        for (int i = 0; i < cipherText.Length; i++)
        {
            if (cipherText[i] == ' ')
            {
                chars[i] = ' ';
            }
            else
            {
                int j = key.IndexOf(cipherText[i]) - 97;
                chars[i] = (char)j;
            }
        }

        return new string(chars);
    }


}

如果你找不到问题，这是我的xaml代码

<Window x:Class="WpfApplication3.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <TextBox x:Name="EncryptBox" HorizontalAlignment="Left" Height="50" Margin="0,81,0,0" TextWrapping="Wrap" Text=" " VerticalAlignment="Top" Width="250" TextChanged="EncryptBox_TextChanged"/>
        <TextBox x:Name="DecryptBox" HorizontalAlignment="Left" Height="50" Margin="269,81,-0.6,0" TextWrapping="Wrap" Text=" " VerticalAlignment="Top" Width="250"/>
        <TextBox x:Name="EncryptResult" HorizontalAlignment="Left" Height="43" Margin="0,238,0,0" TextWrapping="Wrap" Text="TextBox" VerticalAlignment="Top" Width="250"/>
        <TextBox x:Name="DecryptResult" HorizontalAlignment="Left" Height="43" Margin="269,238,-0.6,0" TextWrapping="Wrap" Text="TextBox" VerticalAlignment="Top" Width="250"/>
    </Grid>
</Window>

Answer 1

您可以在后面的代码中实现此处理TextChangedEvent，但您确实不应该这样做。这就是Converters的用途，保持您的View干净，没有任何代码。

将Text和Encrypt-的{{1}}绑定到其前任的DecriptBox，并让Text完成工作。

<强> MainWindow.xaml

Converters

<强> MainWindow.xaml.cs

<Window x:Class="WpfApplication3.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:WpfApplication3"
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <local:EncryptConverter x:Key="EncryptConverter"/>
        <local:DecryptConverter x:Key="DecryptConverter"/>
        <Style TargetType="{x:Type TextBox}">
            <Setter Property="Margin" Value="20,0"/>
        </Style>
    </Window.Resources>
    <StackPanel>
        <Label>Plain Text</Label>
        <TextBox x:Name="PlainBox" MaxLength="26"/>
        <Label>Encripted Text</Label>
        <TextBox x:Name="EncriptedBox" IsEnabled="False"
                 Text="{Binding Path=Text, ElementName=PlainBox, Converter={StaticResource EncryptConverter}}"/>
        <Label>Decripted Text</Label>
        <TextBox x:Name="DecriptedBox" IsEnabled="False"
                 Text="{Binding Path=Text, ElementName=EncriptedBox, Converter={StaticResource DecryptConverter}}"/>
    </StackPanel>
</Window>

我需要将文本框的内容加密到不同的文本框中

1 个答案: