TreeView里CheckBox问题

[huchengyu]

在使某个Element的CheckBox设置为true之后，
怎样能够判断这个CheckBox是否被Checked了

[付长松_华为云MVP]

一个例子:
'/////////////////////////////////////////////////////////////////////////////////
'将它的上级默认设置为浏览权限"B",将所有下级设置为所有权限
'/////////////////////////////////////////////////////////////////////////////////
Private Sub TVroles_Check(ByVal sender As Object, ByVal e As Microsoft.Web.UI.WebControls.TreeViewClickEventArgs) Handles TVroles.Check
'级别数组
Dim NodeLocals() As String = Split(e.Node, ".")
Dim i As Integer
Dim SelectNode, Pnode As Microsoft.Web.UI.WebControls.TreeNode
'找到点击的节点
For i = 0 To NodeLocals.Length - 1
If i = 0 Then
SelectNode = TVroles.Nodes(NodeLocals(i))
Else
SelectNode = SelectNode.Nodes(NodeLocals(i))
'将加入浏览权限
SelectNode.NodeData = addroles(SelectNode.NodeData, "B")
End If
Next

'将下级所有文件夹设置为所有权限
For i = 0 To SelectNode.Nodes.Count - 1
If SelectNode.Checked Then
SetRoles(SelectNode.Nodes(i), "NMDBA", True)
SelectNode.Nodes(i).Checked = True
Else
SetRoles(SelectNode.Nodes(i), "", False)
SelectNode.Nodes(i).Checked = False
End If
Next
TVroles.SelectedNodeIndex = e.Node
If SelectNode.Checked Then
CBbrow.Checked = True
CBaccess.Checked = True
SelectNode.NodeData = "BA"
Else
CBnew.Checked = False
CBmodi.Checked = False
CBdel.Checked = False
CBbrow.Checked = False
CBaccess.Checked = False
SelectNode.NodeData = ""
End If
End Sub