從另一個視窗獲取資料-有解無憂

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Windows Presentation Foundation 專案
C# 作為編程語言

描述

是否可以從用戶輸入中接收資料Window1并在中顯示此輸入MainWindow？

我會將用戶輸入作為檔案打開，Window1并將其內容顯示在MainWindow.

視窗1

<Window x:Name="window1" x:Class="Writer.Window1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:Writer"
        mc:Ignorable="d"
        Title="New" Height="130" Width="600" WindowStyle="None" WindowStartupLocation="CenterScreen" ResizeMode="CanMinimize">
    <Grid Margin="0,0,0,-2">
        <Rectangle HorizontalAlignment="Center" Height="30" Stroke="Black" VerticalAlignment="Top" Width="600" Fill="Black"/>
        <Label Content="Open" HorizontalAlignment="Left" Margin="0,2,0,0" VerticalAlignment="Top" Foreground="White"/>
        <Button Content="X" Margin="579,5,10,0" VerticalAlignment="Top" Background="Black" Foreground="White" BorderBrush="Black" ToolTip="Exit" Focusable="False" IsTabStop="False" Click="Button_Click"/>
        <Label Content="Select the path" HorizontalAlignment="Left" Margin="0,35,0,0" VerticalAlignment="Top"/>
        <TextBox HorizontalAlignment="Left" Margin="5,61,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120" IsTabStop="False"/>
        <Button Content="Select" HorizontalAlignment="Left" Margin="5,84,0,0" VerticalAlignment="Top" BorderBrush="White" Background="#FFADADAD" Width="45"/>
    </Grid>
</Window>

主視窗

<Window x:Name="MainWindow1" x:Class="Writer.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:Writer"
        mc:Ignorable="d"
        Title="Writer" Height="450" Width="800" WindowStyle="None" WindowStartupLocation="CenterScreen" ResizeMode="CanMinimize">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="164*"/>
            <RowDefinition Height="83*"/>
            <RowDefinition Height="203*"/>
        </Grid.RowDefinitions>
        <Rectangle HorizontalAlignment="Center" Height="30" Stroke="Black" VerticalAlignment="Top" Width="800" Fill="Black"/>
        <Label Content="Writer" HorizontalAlignment="Left" Margin="0,2,0,0" VerticalAlignment="Top" Foreground="White"/>
        <Button Content="_" HorizontalAlignment="Left" Margin="765,5,0,0" VerticalAlignment="Top" Background="Black" Foreground="White" BorderBrush="Black" Focusable="False" ToolTip="Minimize" IsTabStop="False" ClickMode="Press" Click="Button_Click_1"/>
        <Button Content="X" Margin="779,5,10,0" VerticalAlignment="Top" Background="Black" Foreground="White" BorderBrush="Black" ToolTip="Exit" Focusable="False" IsTabStop="False" Click="Button_Click"/>
 
        <Menu Margin="0,30,0,114" Height="20">
            <MenuItem Header="File">
                <MenuItem Header="New">
                    <MenuItem.Icon>
                        <Image Source="/file-added.svg"/>
                    </MenuItem.Icon>
                </MenuItem>
                <MenuItem Header="Open" Click="MenuItem_Click"/>
                <MenuItem Header="Open from server"/>
                <MenuItem Header="Save"/>
                <MenuItem Header="Save as"/>
                <MenuItem Header="Close file"/>
                <MenuItem Header="Close folder"/>
            </MenuItem>
            <MenuItem Header="Start">
                <MenuItem Header="Font">
                    <MenuItem Header="Font"/>
                    <MenuItem Header="Family"/>
                    <MenuItem Header="Size"/>
                </MenuItem>
                <Separator/>
                <MenuItem Header="Bold"/>
                <MenuItem Header="Italic"/>
                <MenuItem Header="Underline"/>
                <MenuItem Header="Strikethrough"/>
            </MenuItem>
            <MenuItem Header="Insert">
                <MenuItem Header="New site"/>
            </MenuItem>
            <MenuItem Header="Layout">
                
            </MenuItem>
            <MenuItem Header="View">
                
            </MenuItem>
            <MenuItem Header="Help"/>
        </Menu>
        <RichTextBox x:Name="RichTextBox1" Margin="0,50,0,0" BorderBrush="White" Cursor="Arrow" IsTabStop="False" Grid.RowSpan="3" FontFamily="Segoe UI" BorderThickness="0,0,0,0">
            <FlowDocument>
                <Paragraph>
                    <Run Text=""/>
                </Paragraph>
            </FlowDocument>
        </RichTextBox>
    </Grid>
</Window>

uj5u.com熱心網友回復：

是的，有辦法。

實作一個Window1為您提供資料的公共方法。然后使用參考Window1并呼叫該方法。如果MainWindow沒有參考Window1，給它參考。

這是一個例子。它假定您從主視窗中打開第二個視窗。

_{除了 Stack Overflow 的 CC-BY-SA 許可外，我還為任何在他的專案中需要此代碼的人許可它為 CC-0。}

主視窗.xaml

<Window x:Class="GetDataFromOtherWindow.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <StackPanel>
        <Button Content="Open other window" Click="Button_Click" />
        <Button Content="Get data from other window" Click="Button_Click_1" />
    </StackPanel>
</Window>

主視窗.xaml.cs

using System.Windows;

namespace GetDataFromOtherWindow
{
    public partial class MainWindow : Window
    {
        private Window1? otherWindow;

        public MainWindow()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            otherWindow = new Window1();
            otherWindow.Show();
        }

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            if (otherWindow != null)
            {
                MessageBox.Show(otherWindow.GetData());
            }
        }
    }
}

Window1.xaml

<Window x:Class="GetDataFromOtherWindow.Window1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        mc:Ignorable="d"
        Title="Window1" Height="141" Width="400">
    <StackPanel>
        <RichTextBox Name="richBox">
            <FlowDocument>
                <Paragraph>
                    <Run Text="This is some text"/>
                </Paragraph>
            </FlowDocument>
        </RichTextBox>
    </StackPanel>
</Window>

Window1.xaml.cs

using System.Windows;
using System.Windows.Documents;

namespace GetDataFromOtherWindow
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        public string GetData()
        {
            TextRange textRange = new TextRange(
                richBox.Document.ContentStart,
                richBox.Document.ContentEnd
            );
            return textRange.Text;
        }
    }
}

請注意，這對 MVVM 不是很友好，因為此代碼沒有知道業務邏輯的模型。

根據評論，如果要在關閉 Window1 后顯示資料，可以這樣做：

主視窗.xaml.cs

using System.Windows;

namespace GetDataFromOtherWindow
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            var otherWindow = new Window1();
            otherWindow.ShowDialog();
            MessageBox.Show(otherWindow.GetData());
        }
    }
}

在關閉視窗之前獲取資料的代碼：

using System.Windows;

namespace GetDataFromOtherWindow
{
    public partial class MainWindow : Window
    {
        private Window1? otherWindow;

        public MainWindow()
        {
            InitializeComponent();
        }

        protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
        {
            if (otherWindow != null)
            {
                MessageBox.Show(otherWindow.GetData());
            }

            base.OnClosing(e);
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            otherWindow = new Window1();
            otherWindow.Show();
        }
    }
}

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