当单击WindowsFormHost中的按钮时关闭WPF对话框

Question

我有一个WPF对话框，它承载一个windowsFormHost控件，如下所示

<Window x:Class="WPFSort.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:WPFSort"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525">
<Grid>
<WindowsFormsHost HorizontalAlignment="Left" Height="Auto"
Margin="87,43,0,0" VerticalAlignment="Top" Width="Auto">
<local:SimpleWinControl />
</WindowsFormsHost>
</Grid>
</Window>

对于 SimpleWinControl，它是一个 WinForm 控件。单击button 1时，我想要

1. 要关闭的 WPF 对话框

2. 数据importantdata"传递"到调用 WPF 对话框的 WPF 窗体？

   public partial class SimpleWinControl : UserControl
   {
   public SimpleWinControl()
   {
   InitializeComponent();
   }
   public object importantdata;
   private void button1_Click(object sender, EventArgs e)
   {
   //how should I write the close and pass the importantdata out
   }
   }
   

Answer 1

例如，可以向 WinForms 控件添加一个公开Button控件的属性：

public partial class SimpleWinControl : UserControl
{
public SimpleWinControl()
{
InitializeComponent();
}
public Button TheButton { get { return button1; } }
...
}

在 XAML 标记中为 WinForms 控件提供x:Name：

<WindowsFormsHost HorizontalAlignment="Left" Height="Auto" Margin="87,43,0,0" VerticalAlignment="Top" Width="Auto">
<local:SimpleWinControl x:Name="winFormsControl" />
</WindowsFormsHost>

。并挂接到 WPF 对话框窗口的代码隐藏中Button的Click事件：

public partial class Dialog : Window
{
public Dialog()
{
InitializeComponent();
winFormsControl.TheButton.Click += (s, e) => this.Close();
}
}

一旦ShowDialog方法返回，打开对话框的窗口就可以访问importantdata字段：

private void ShowDialog_Click(object sender, RoutedEventArgs e)
{
Dialog d = new Dialog();
d.ShowDialog();
object importantData = d.winFormsControl.importantdata;
}

另一种选择可能是从 WinForms 控件引发事件：https://msdn.microsoft.com/en-us/library/5z57dxz2(v=vs.90).aspx