WPF 中如何使用第三方控件 ，可以使用WindowsFormsHost 类

允许在 WPF 页面上承载 Windows Forms控件的元素。

命名空间：   System.Windows.Forms.Integration

程序集：   WindowsFormsIntegration（在 WindowsFormsIntegration.dll 中） 用于 XAML 的 XMLNS：http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation

add: http://msdn.microsoft.com/zh-cn/library/system.windows.forms.integration.windowsformshost

如果要引用的话

<Window x:Class="Selection.Window1"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     xmlns:wf="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"     Title="Dates" Height="314" Width="373">     <Grid>     <Label HorizontalAlignment="Left" Margin="20,25,0,0" Name="label1" Width="35.63" Height="23.2766666666667" VerticalAlignment="Top">First</Label>     <Label Height="23.2766666666667" HorizontalAlignment="Left" Margin="20,56,0,0" Name="label2" VerticalAlignment="Top" Width="52.63">Second</Label>     <WindowsFormsHost Name="hostFirst" Margin="85,25,18,0" Height="23.2766666666667" VerticalAlignment="Top">       <wf:DateTimePicker Name="first"/>     </WindowsFormsHost>     <WindowsFormsHost Name="hostSecond" Margin="85,56,18,0" Height="23.2766666666667" VerticalAlignment="Top">       <wf:DateTimePicker Name="second"/>//文本框里是日期     </WindowsFormsHost>     <Button Height="23" HorizontalAlignment="Left" Margin="20,100,0,0" Name="compare" VerticalAlignment="Top" Width="75" Click="compareClick">Compare</Button>     <TextBox Margin="20,131,104,20" Name="info" TextWrapping="WrapWithOverflow" AcceptsReturn="False" IsReadOnly="True" />     <Button Height="22" HorizontalAlignment="Right" Margin="0,0,18,20" Name="quit" VerticalAlignment="Bottom" Width="75" Click="quitClick">Quit</Button>   </Grid> </Window>

后台C#

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; using System.Windows.Forms;

namespace Selection {

/// <summary>

/// Interaction logic for Window1.xaml     /

// </summary>
    public partial class Window1 : Window     {

private DateTimePicker first;

private DateTimePicker second;
        public Window1()         {

InitializeComponent();

//

Child

获取或设置由 WindowsFormsHost 元素承载的子控件。

first = hostFirst.Child as DateTimePicker;

second = hostSecond.Child as DateTimePicker;         }
        private void quitClick(object sender, RoutedEventArgs e)         {

this.Close();

}
        private void compareClick(object sender, RoutedEventArgs e)         {

int diff = dateCompare(first.Value, second.Value);

info.Text = "";

show("first == second", diff == 0);

show("first != second", diff != 0);

show("first <  second", diff < 0);

show("first <= second", diff <= 0);

show("first >  second", diff > 0);

show("first >= second", diff >= 0);         }
        private void show(string exp, bool result)         {

info.Text += exp;

info.Text += " : " + result.ToString();

info.Text += "\r\n";

//\r 表示：回车符(ACSII：13 或0x0d)，就是我们常说的硬回车。

//  \n 表示：换行(ACSII：10 或0x0a)，就是我们常说的软回车。

//\n，好比你在DreamWeaver里做一个网页，在源代码里按一下回车，是给源代码换行。
        }
        private int dateCompare(DateTime leftHandSide, DateTime rightHandSide)         {

// TO DO

return 42;

}

}

}

WPF Windows Forms integration

 

在wpf程序中整合windows form：

1.在references中添加WindowsFormsIntegration和System.Windows.Forms。

2.在xaml中使用的时候要写清楚名字空间，可以把这两个ns定义出来。

下面两句是重点，wpf书写的时候一定要注意引用

xmlns:wf="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"

xmlns:wfi="clr-namespace:System.Windows.Forms.Integration;assembly=WindowsFormsIntegration"

插入WindowsFormsControl：

<wfi:WindowsFormsHost>             <wf:DateTimePicker/> </wfi:WindowsFormsHost>

看到Windows.Forms下面也有Button控件（废话），于是想知道这个Button和WPF通常用的System.Windows.Controls.Button有什么不同。

看了看两者的继承体系：

System.Windows.Controls域中:  Button<ButtonBase<ContentControl<Control

System.Windows.Forms域:         Button<ButtonBase<Control

看似差不多，其实他们完全存在于两个不同的空间，没有一点联系。

两个Button类里定义的内容也不尽相同，Forms.Button看上去内容丰富一些，发现里面有DoubleClick这个event，但是试了试并不起作用，换到windows form 程序下仍然不起作用。（Visual Studio的property界面上看不到这个事件，但是可以在代码里自己加event handler，虽然加了也白加）。Controls.Button里虽然没有DoubleClick，但是MouseDoubleClick是work的。而Forms.Button似乎就只能触发Click事件。

<Window x:Class="WpfApplication1.Window1"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     Title="Window1" Height="300" Width="300">

<Grid xmlns:wf="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"

xmlns:wfi="clr-namespace:System.Windows.Forms.Integration;assembly=WindowsFormsIntegration"           >

<Grid.RowDefinitions>

<RowDefinition Height="*"/>

<RowDefinition Height="*"/>

</Grid.RowDefinitions>

<Button Grid.Row="1" MouseDoubleClick="Button_MouseDoubleClick">button</Button>

<wfi:WindowsFormsHost Grid.Row="0">

<wf:Button MouseDoubleClick="Button_MouseDoubleClick"/>

</wfi:WindowsFormsHost>     </Grid> </Window>

这两个事件对应的event类型也不一样，一个是System.Windows.Input.MouseButtonEventHandler，一个是System.Windows.Forms.MouseEventHandler，所以对应的event handler的函数的参数也不一样，一个是private void Button_MouseDoubleClick(object sender, MouseButtonEventArgs e)，一个是private void Button_MouseDoubleClick(object sender, System.Windows.Forms.MouseEventArgs e)，因此两个event handler函数名可以相同。