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我们想从不同的网页操作母版页中的 ASP.Net TreeView。

此编码来自母版页 Web 表单代码隐藏文件。我们想在另一个网页的代码隐藏文件的 Page_Load 事件中复制此编码。当我尝试在其他网络表单中使用此编码时，

objTreeView = Knowledge_Academy1.loginView.FindControl("TreeViewMain")

我们收到一个错误，指出 loginView 受保护。我们如何取消保护它以便我可以复制相同的编码？

这是主 Web 表单代码隐藏文件中的工作编码：

Public Class Knowledge_Academy1
    Inherits System.Web.UI.MasterPage

Protected Sub TreeViewMain_TreeNodeExpanded(sender As Object, e As TreeNodeEventArgs)

    Dim objTreeView As TreeView
    objTreeView = loginView.FindControl("TreeViewMain")

    Select Case e.Node.Text

        Case "Maintenance"

            ' Make sure all nodes except for Maintenance are collapsed.
            '----------------------------------------------------------
            For Each treenode As TreeNode In objTreeView.Nodes
                If treenode.Text = "Parents" Or
                    treenode.Text = "Students" Or
                    treenode.Text = "Financial" Then

                    treenode.Collapse()
                End If
            Next treenode

        Case "Students"

            ' Make sure all nodes except for Students are collapsed.
            '-------------------------------------------------------
            For Each treenode As TreeNode In objTreeView.Nodes
                If treenode.Text = "Parents" Or
                    treenode.Text = "Maintenance" Or
                    treenode.Text = "Financial" Then

                    treenode.Collapse()
                End If
            Next treenode

        Case "Parents"

            ' Make sure all nodes except for Parents are collapsed.
            '------------------------------------------------------
            For Each treenode As TreeNode In objTreeView.Nodes
                If treenode.Text = "Students" Or
                    treenode.Text = "Maintenance" Or
                    treenode.Text = "Financial" Then

                    treenode.Collapse()
                End If
            Next treenode

        Case "Financial"

            ' Make sure all nodes except for Financial are collapsed.
            '--------------------------------------------------------
            For Each treenode As TreeNode In objTreeView.Nodes
                If treenode.Text = "Parents" Or
                    treenode.Text = "Maintenance" Or
                    treenode.Text = "Students" Then

                    treenode.Collapse()
                End If
            Next treenode
        Case Else

    End Select
End Sub
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1 回答 1

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我建议看看这篇 MSDN 文章： http: //msdn.microsoft.com/en-us/library/xxwa0ff0 (VS.80).aspx

例如：

Dim mpTreeview As Treeview

mpTreeview = CType(Master.FindControl("TreeViewMain"), Treeview)
于 2013-02-11T14:13:48.073 回答