C# 表单接收UserControl中引发事件的通知
我还是找不到这上面的任何东西。但在我的应用程序中,我有一个主窗体(Form1),该窗体中有一个UserControl。当某人单击该usercontrol的ListView中的某个项目时,我想知道Form1表单中的该项目(ItemSelectionChanged事件)。对此有何建议/建议C# 表单接收UserControl中引发事件的通知,c#,.net,winforms,events,user-controls,C#,.net,Winforms,Events,User Controls,我还是找不到这上面的任何东西。但在我的应用程序中,我有一个主窗体(Form1),该窗体中有一个UserControl。当某人单击该usercontrol的ListView中的某个项目时,我想知道Form1表单中的该项目(ItemSelectionChanged事件)。对此有何建议/建议 感谢您在usercontrol内部,定义一个事件,例如 Event listviewItemChanged(ByVal itemIndex as integer) 然后,在usercontrol内部的Listv
感谢您在usercontrol内部,定义一个事件,例如
Event listviewItemChanged(ByVal itemIndex as integer)
然后,在usercontrol内部的Listview ItemSelectionChanged事件中,引发usercontrol的listviewItemChanged事件:
Private Sub ListView1_ItemSelectionChanged(ByVal sender As Object, ByVal e As ListViewItemSelectionChangedEventArgs) Handles ListView1.ItemSelectionChanged
RaiseEvent listviewItemChanged(e.ItemIndex)
End Sub
Public Sub usercontrol_listviewItemChanged(ByVal itemIndex as Integer) Handles usercontrol.listviewItemChanged
...
end sub
最后,在Form1中,处理usercontrol.listviewItemchanged事件:
Private Sub ListView1_ItemSelectionChanged(ByVal sender As Object, ByVal e As ListViewItemSelectionChangedEventArgs) Handles ListView1.ItemSelectionChanged
RaiseEvent listviewItemChanged(e.ItemIndex)
End Sub
Public Sub usercontrol_listviewItemChanged(ByVal itemIndex as Integer) Handles usercontrol.listviewItemChanged
...
end sub
在usercontrol内部,定义一个事件,例如
Event listviewItemChanged(ByVal itemIndex as integer)
然后,在usercontrol内部的Listview ItemSelectionChanged事件中,引发usercontrol的listviewItemChanged事件:
Private Sub ListView1_ItemSelectionChanged(ByVal sender As Object, ByVal e As ListViewItemSelectionChangedEventArgs) Handles ListView1.ItemSelectionChanged
RaiseEvent listviewItemChanged(e.ItemIndex)
End Sub
Public Sub usercontrol_listviewItemChanged(ByVal itemIndex as Integer) Handles usercontrol.listviewItemChanged
...
end sub
最后,在Form1中,处理usercontrol.listviewItemchanged事件:
Private Sub ListView1_ItemSelectionChanged(ByVal sender As Object, ByVal e As ListViewItemSelectionChangedEventArgs) Handles ListView1.ItemSelectionChanged
RaiseEvent listviewItemChanged(e.ItemIndex)
End Sub
Public Sub usercontrol_listviewItemChanged(ByVal itemIndex as Integer) Handles usercontrol.listviewItemChanged
...
end sub
UserControl只是一个类。给那个班安排一次公开活动。让表单订阅该事件。当用户控件中发生ItemSelectionChanged事件时,它应该引发其公共事件。UserControl只是一个类。给那个班安排一次公开活动。让表单订阅该事件。当用户控件中发生ItemSelectionChanged事件时,它应该引发其公共事件。