WPF C＃InputBox

Question

我正在使用C＃进行WPF应用程序。我想弹出一个对话框，提示用户输入他/她的名字。之后，我将跟踪名称并使用名称将一些数据保存到txt文件中。

例如，

名称输入是 name =“John”

所以我有一个数据 data =“1,2,3”;

然后我将“数据”保存在John.txt文件中。

任何人都知道该怎么做？ 我认为问题是如何弹出一个对话框供用户输入名称。

谢谢！

Answer 1

我更喜欢使用不会锁定应用程序的对话框，并远离更传统的Win32对话框。

示例

隐藏输入对话

在此示例中，我使用了我正在为我的应用程序使用的基于MVVM的解决方案的简化版本。它可能不是很漂亮，但应该给你一个关于它背后的基础知识的坚实想法。

XAML：

<Window x:Class="WpfApplication1.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>
    <StackPanel>
        <Button Content="Cool Button" x:Name="CoolButton" Click="CoolButton_Click"/>
        <ListBox x:Name="MyListBox"/>
    </StackPanel>

    <!-- It's important that this is in the end of the XAML as it needs to be on top of everything else! -->
    <Grid x:Name="InputBox" Visibility="Collapsed">
        <Grid Background="Black" Opacity="0.5"/>
        <Border
            MinWidth="250"
            Background="Orange" 
            BorderBrush="Black" 
            BorderThickness="1" 
            CornerRadius="0,55,0,55" 
            HorizontalAlignment="Center" 
            VerticalAlignment="Center">
            <StackPanel>
                <TextBlock Margin="5" Text="Input Box:" FontWeight="Bold" FontFamily="Cambria" />
                <TextBox MinWidth="150" HorizontalAlignment="Center" VerticalAlignment="Center" x:Name="InputTextBox"/>
                <StackPanel Orientation="Horizontal" HorizontalAlignment="Center">
                    <Button x:Name="YesButton" Margin="5" Content="Yes" Background="{x:Null}" Click="YesButton_Click"/>
                    <Button x:Name="NoButton" Margin="5" Content="No" Background="{x:Null}" Click="NoButton_Click" />
                </StackPanel>
            </StackPanel>
        </Border>
    </Grid>
</Grid>

显示此对话框非常简单，因为您只需要将InputBox网格的可见性设置为可见。然后，您只需处理Yes / No按钮并从TextBox中获取Input文本。

因此，您只需将ShowDialog()选项设置为Visibility，而不是使用需要Visible的代码。我们将在代码隐藏中处理这个示例中仍有一些事情要做，例如在处理Yes / No Button点击后清除InputText框。

代码隐藏：

namespace WpfApplication1
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void CoolButton_Click(object sender, RoutedEventArgs e)
        {
            // CoolButton Clicked! Let's show our InputBox.
            InputBox.Visibility = System.Windows.Visibility.Visible;
        }

        private void YesButton_Click(object sender, RoutedEventArgs e)
        {
            // YesButton Clicked! Let's hide our InputBox and handle the input text.
            InputBox.Visibility = System.Windows.Visibility.Collapsed;

            // Do something with the Input
            String input = InputTextBox.Text;
            MyListBox.Items.Add(input); // Add Input to our ListBox.

            // Clear InputBox.
            InputTextBox.Text = String.Empty;
        }

        private void NoButton_Click(object sender, RoutedEventArgs e)
        {
            // NoButton Clicked! Let's hide our InputBox.
            InputBox.Visibility = System.Windows.Visibility.Collapsed;

            // Clear InputBox.
            InputTextBox.Text = String.Empty;
        }
    }
}

使用Dependency可以轻松完成代码隐藏，或者在这种情况下使用ViewModel逻辑，但为了简单起见，我将其保留在代码隐藏中。

Answer 2

这是我的解决方案，我花了大约3个小时来输入它。它是完全可定制的。

string var = new InputBox("text").ShowDialog();

这是班级的代码

public class InputBox
{

    Window Box = new Window();//window for the inputbox
    FontFamily font = new FontFamily("Tahoma");//font for the whole inputbox
    int FontSize=30;//fontsize for the input
    StackPanel sp1=new StackPanel();// items container
    string title = "InputBox";//title as heading
    string boxcontent;//title
    string defaulttext = "Scrivi quì il tuo nome...";//default textbox content
    string errormessage = "Scelta non valida";//error messagebox content
    string errortitle="Errore";//error messagebox heading title
    string okbuttontext = "OK";//Ok button content
    Brush BoxBackgroundColor = Brushes.GreenYellow;// Window Background
    Brush InputBackgroundColor = Brushes.Ivory;// Textbox Background
    bool clicked = false;
    TextBox input = new TextBox();
    Button ok = new Button();
    bool inputreset = false;

    public InputBox(string content)
    {
        try
        {
            boxcontent = content;
        }
        catch { boxcontent = "Error!"; }
        windowdef();
    }

    public InputBox(string content,string Htitle, string DefaultText)
    {
        try
        {
            boxcontent = content;
        }
        catch { boxcontent = "Error!"; }
        try
        {
            title = Htitle;
        }
        catch 
        {
            title = "Error!";
        }
        try
        {
            defaulttext = DefaultText;
        }
        catch
        {
            DefaultText = "Error!";
        }
        windowdef();
    }

    public InputBox(string content, string Htitle,string Font,int Fontsize)
    {
        try
        {
            boxcontent = content;
        }
        catch { boxcontent = "Error!"; }
        try
        {
            font = new FontFamily(Font);
        }
        catch { font = new FontFamily("Tahoma"); }
        try
        {
            title = Htitle;
        }
        catch
        {
            title = "Error!";
        }
        if (Fontsize >= 1)
            FontSize = Fontsize;
        windowdef();
    }

    private void windowdef()// window building - check only for window size
    {
        Box.Height = 500;// Box Height
        Box.Width = 300;// Box Width
        Box.Background = BoxBackgroundColor;
        Box.Title = title;
        Box.Content = sp1;
        Box.Closing += Box_Closing;
        TextBlock content=new TextBlock();
        content.TextWrapping = TextWrapping.Wrap;
        content.Background = null;
        content.HorizontalAlignment = HorizontalAlignment.Center;
        content.Text = boxcontent;
        content.FontFamily = font;
        content.FontSize = FontSize;
        sp1.Children.Add(content);

        input.Background = InputBackgroundColor;
        input.FontFamily = font;
        input.FontSize = FontSize;
        input.HorizontalAlignment = HorizontalAlignment.Center;
        input.Text = defaulttext;
        input.MinWidth = 200;
        input.MouseEnter += input_MouseDown;
        sp1.Children.Add(input);
        ok.Width=70;
        ok.Height=30;
        ok.Click += ok_Click;
        ok.Content = okbuttontext;
        ok.HorizontalAlignment = HorizontalAlignment.Center;
        sp1.Children.Add(ok);

    }

    void Box_Closing(object sender, System.ComponentModel.CancelEventArgs e)
    {
        if(!clicked)
        e.Cancel = true;
    }

    private void input_MouseDown(object sender, MouseEventArgs e)
    {
        if ((sender as TextBox).Text == defaulttext && inputreset==false)
        {
            (sender as TextBox).Text = null;
            inputreset = true;
        }
    }

    void ok_Click(object sender, RoutedEventArgs e)
    {
        clicked = true;
        if (input.Text == defaulttext||input.Text == "")
            MessageBox.Show(errormessage,errortitle);
        else
        {
            Box.Close();
        }
        clicked = false;
    }

    public string ShowDialog()
    {
        Box.ShowDialog();
        return input.Text;
    }
}

希望它有用。

Answer 3

在Visual Studio项目中创建另一个Window类，该类在公共属性中保存用户名。然后在主窗口的某个位置创建此窗口的实例，并使用ShowDialog方法显示它。这会阻塞，直到您的“对话框”窗口关闭。然后，您可以从公共财产中获取用户名，并随意使用它。

Answer 4

在项目中创建/添加新的Window以获取用户的输入。然后，您可以使用Window.Show或Window.ShowDialog将该窗口显示为弹出窗口

同时添加一个OK按钮n创建的窗口，然后单击确定按钮单击保存文本文件中的信息

Answer 5

MSDN上的自定义对话框部分可能会为您提供一些指导：Custom Dialog Box in WPF。还有代码示例和XAML源代码。

处理后，您可以搜索如何将数据保存到文件中 - 这很容易，并且有很多方法可以做到这一点（其中一种方法是使用TextWriter类：example ）。

Answer 6

谢谢！！我的修改版本：

public class InputBox
{
    Window Box = new Window();//window for the inputbox
    FontFamily font = new FontFamily("Avenir");//font for the whole inputbox
    int FontSize = 14;//fontsize for the input
    StackPanel sp1 = new StackPanel();// items container
    string title = "Dica s.l.";//title as heading
    string boxcontent;//title
    string defaulttext = "";//default textbox content
    string errormessage = "Datos no válidos";//error messagebox content
    string errortitle = "Error";//error messagebox heading title
    string okbuttontext = "OK";//Ok button content
    string CancelButtonText = "Cancelar";
    Brush BoxBackgroundColor = Brushes.WhiteSmoke;// Window Background
    Brush InputBackgroundColor = Brushes.Ivory;// Textbox Background
    bool clickedOk = false;
    TextBox input = new TextBox();
    Button ok = new Button();
    Button cancel = new Button();
    bool inputreset = false;


    public InputBox(string content)
    {
        try
        {
            boxcontent = content;
        }
        catch { boxcontent = "Error!"; }
        windowdef();
    }

    public InputBox(string content, string Htitle, string DefaultText)
    {
        try
        {
            boxcontent = content;
        }
        catch { boxcontent = "Error!"; }
        try
        {
            title = Htitle;
        }
        catch
        {
            title = "Error!";
        }
        try
        {
            defaulttext = DefaultText;
        }
        catch
        {
            DefaultText = "Error!";
        }
        windowdef();
    }

    public InputBox(string content, string Htitle, string Font, int Fontsize)
    {
        try
        {
            boxcontent = content;
        }
        catch { boxcontent = "Error!"; }
        try
        {
            font = new FontFamily(Font);
        }
        catch { font = new FontFamily("Tahoma"); }
        try
        {
            title = Htitle;
        }
        catch
        {
            title = "Error!";
        }
        if (Fontsize >= 1)
            FontSize = Fontsize;
        windowdef();
    }

    private void windowdef()// window building - check only for window size
    {
        Box.Height = 100;// Box Height
        Box.Width = 450;// Box Width
        Box.Background = BoxBackgroundColor;
        Box.Title = title;
        Box.Content = sp1;
        Box.Closing += Box_Closing;
        Box.WindowStyle = WindowStyle.None;
        Box.WindowStartupLocation = WindowStartupLocation.CenterScreen;

        TextBlock content = new TextBlock();
        content.TextWrapping = TextWrapping.Wrap;
        content.Background = null;
        content.HorizontalAlignment = HorizontalAlignment.Center;
        content.Text = boxcontent;
        content.FontFamily = font;
        content.FontSize = FontSize;
        sp1.Children.Add(content);

        input.Background = InputBackgroundColor;
        input.FontFamily = font;
        input.FontSize = FontSize;
        input.HorizontalAlignment = HorizontalAlignment.Center;
        input.Text = defaulttext;
        input.MinWidth = 200;
        input.MouseEnter += input_MouseDown;
        input.KeyDown += input_KeyDown;

        sp1.Children.Add(input);

        ok.Width = 70;
        ok.Height = 30;
        ok.Click += ok_Click;
        ok.Content = okbuttontext;

        cancel.Width = 70;
        cancel.Height = 30;
        cancel.Click += cancel_Click;
        cancel.Content = CancelButtonText;

        WrapPanel gboxContent = new WrapPanel();
        gboxContent.HorizontalAlignment = HorizontalAlignment.Center;

        sp1.Children.Add(gboxContent);
        gboxContent.Children.Add(ok);
        gboxContent.Children.Add(cancel);

        input.Focus();
    }

    void Box_Closing(object sender, System.ComponentModel.CancelEventArgs e)
    {
       //validation
    }

    private void input_MouseDown(object sender, MouseEventArgs e)
    {
        if ((sender as TextBox).Text == defaulttext && inputreset == false)
        {
            (sender as TextBox).Text = null;
            inputreset = true;
        }
    }

    private void input_KeyDown(object sender, KeyEventArgs e)
    {
        if (e.Key == Key.Enter && clickedOk == false )
        {
            e.Handled = true;
            ok_Click(input, null);
        }

        if (e.Key == Key.Escape)
        {
            cancel_Click(input, null);
        }
    }

    void ok_Click(object sender, RoutedEventArgs e)
    {
        clickedOk = true;
        if (input.Text == defaulttext || input.Text == "")
            MessageBox.Show(errormessage, errortitle,MessageBoxButton.OK,MessageBoxImage.Error);
        else
        {
            Box.Close();
        }
        clickedOk = false;
    }

    void cancel_Click(object sender, RoutedEventArgs e)
    {
        Box.Close();
    }

    public string ShowDialog()
    {
        Box.ShowDialog();
        return input.Text;
    }
}