ASP.NET TreeView：檢查後回發更改？

Question

如何在TreeView控件中檢查TreeNode複選框時自動回發到服務器？

Answer 1

對不起，沒有自動回

你可以用簡單的JavaScript添加此行爲

你應該檢查這篇文章 http://forums.asp.net/p/1109288/1888180.aspx

<script language="javascript" type="text/javascript"> 

    function postBackByObject() 
    { 
     var o = window.event.srcElement; 
     if (o.tagName == "INPUT" && o.type == "checkbox") 
     { 
      __doPostBack("",""); 
     } 
    } 
</script> 

Answer 2

爲了讓事情使用jQuery現代化一點：

<asp:UpdatePanel runat="server"> 
 
    <ContentTemplate> 
 
    <asp:TreeView ID="TVP" runat="server"> 
 
\t \t ... 
 
    </asp:TreeView> 
 
    <asp:Button ID="BTVPNC" runat="server" style="display: none;" /> 
 
    </ContentTemplate> 
 
</asp:UpdatePanel>

和VB.NET代碼背後：

Private Sub TVP_PreRender(sender As Object, e As EventArgs) Handles TVP.PreRender 
 
    Dim js As String = "$('#" + Me.TVP.ClientID + "').find('input[type=""checkbox""]')" 
 
    js += ".bind('change',function(){" + Me.ClientScript.GetPostBackEventReference(Me.BTVPNC, "") + ";});" 
 
    ScriptManager.RegisterStartupScript(Me.TVP, Me.TVP.GetType(), "TVP_NodeCheckAutoPostBack", js, True) 
 
End Sub 
 

 
Private Sub TVP_TreeNodeCheckChanged(sender As Object, e As TreeNodeEventArgs) Handles TVP.TreeNodeCheckChanged 
 
\t 'Handle your TreeView NodeChecked with AutoPostBack event here. 
 
End Sub