主题：按日设置加载树和筛选树

dt = cmd.ExecuteReader()

Dim trv As WinForm.TreeView = e.Form.Controls("TreeView1")

trv.BuildTree(dt, "年|月|日")

 

目录树NodeMouseClick事件:

 

Dim Value()As String

Dim Filter As String

Dim d1 As Date

Dim d2 As Date

Value = e.Node.FullPath.Split("\")

Select Case e.Node.Level

    Case 0

        Dim y As Integer = value(0)

        d1 = New Date(y,1,1) '取得该年的第一天

        d2 = new Date(y,12,31) '取得该年的最后一天

        Filter = "RQ>= #" & d1 & "# And RQ<= #" & d2 & "#"

    Case 1

        Dim y As Integer = value(0)

        Dim m As Integer = value(1)

        d1 = New Date(y, m, 1) '取得该月的第一天

        d2 = new Date(y, m, Date.DaysInMonth(y,m)) '取得该月的最后一天

        Filter = "RQ >= #" & d1 & "# And RQ<= #" & d2 & "#"

    Case 2

        Dim y As Integer = value(0)

        Dim m As Integer = value(1)

        Dim d As Integer = Value(2)

        Dim dt As new Date(y,m,d)

        Filter = "RQ= #" & dt & "#"

End Select

Tables("PRINDXDD").Filter = Filter