Question

我有一个带有wpf usercontrol的winform（ElementHost1）。 usercontrol只包含一个按钮。我怎么知道winform中点击了wpf按钮的时间？如何将事件从wpf usercontrol“重定向”到winform？

感谢。

Answer 1

此 link 可能对您有所帮助。

或者在VB.NET中进行简单的事件处理

Public Event ClickMe()

Private Sub Button1_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles Button1.Click
    RaiseEvent ClickMe()
End Sub

然后在您的实际窗口中，您可以拥有：

Public Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    AddHandler SampleClick1.ClickMe, AddressOf Sample_Click
End Sub

Private Sub Sample_Click()
    MessageBox.Show("This is a proof!")
End Sub

SampleClick1变量来自生成的设计器代码，供您使用。

Friend WithEvents ElementHost1 As System.Windows.Forms.Integration.ElementHost
Friend SampleClick1 As WindowsApplication1.SampleClick

Answer 2

这是我找到的一个解决方案

在UserControl1.Xaml.cs中

public static RoutedEvent ChkBoxChecked = EventManager.RegisterRoutedEvent("CbChecked", RoutingStrategy.Bubble,
                                                                typeof(RoutedEventHandler), typeof(CheckBox));
public event RoutedEventHandler CbChecked
{
    add
    {
        AddHandler(ChkBoxChecked, value);
    }
    remove
    {
        RemoveHandler(ChkBoxChecked, value);
    }
}

private void cbTreeView_Checked(object sender, RoutedEventArgs e)
{
    RoutedEventArgs args = new RoutedEventArgs(ChkBoxChecked);
    RaiseEvent(args);                
}

现在在MainForm Form1显示的事件中，我们可以添加CbChecked事件

private void Form1_Shown(object sender, EventArgs e)
{
    this.elemetHost1.CbChecked += new System.Windows.RoutedEventHandler(wpfusercontrol_CbChecked);
    //elementHost1 is the name of wpf usercontrol hosted in Winform
}

void elementHost1_CbChecked(object sender, System.Windows.RoutedEventArgs e)
{
    //This event will raise when user clicks on chekbox
}

我在这里面临一个问题。我正在Form1中为UserControl1.so中的所有复选框clickevents发起相同的事件。我想知道在mainform.i中点击了哪个复选框试图在RoutedEventArgs中查看。 ......但没有帮助如何知道在主窗体中单击了哪个复选框

如何将事件从WPF UserControl重定向到WinForm？

2 个答案: