\'此函数用于更新主窗口左侧的Treeview控件
Dim TvwCtl As WinForm.TreeView = Args(0)   \'要更新的Treeview控件
Dim TblName As String = Args(1)            \'数据来源表
Dim Columns As String = Args(2)            \'要构建Treeview的字段
If Tables(TblName).Rows.Count = 0 Then Return Nothing
TvwCtl.Form.StopRedraw
TvwCtl.BuildTree(Tables(TblName).DataTable,Columns)
Dim ArrColName() As String = Columns.Split("|")
For i As Integer = 0 To Ubound(ArrColName)
    If Tables(TblName).DataTable.DataCols(ArrColName(i)).IsDate Then
        Dim Dt As Date =  Tables(TblName).DataTable.DataRows(0)(ArrColName(i))
        If Dt.Hour = 0 And Dt.Minute = 0 And Dt.Minute = 0 Then
            For Each Nd As WinForm.TreeNode In TvwCtl.AllNodes
                If Nd.Level = i Then Nd.Text = Nd.Text.SubString(0,Nd.Text.IndexOf(" "))
            Next
        End If
    End If
Next
TvwCtl.Nodes.Insert("显示所有行",0)
TvwCtl.Form.ResumeRedraw

狐狸老师，这个内部函数是我抄来的现求狐老师修改。其中一个节点修改成日期型。