加载树的条件载入及排序问题,希望只载入指定客户的行,并且加载树按日期的倒序排序。不知道怎么设置,请专家指教。
窗口事件:
'首先生成统计表
Dim dt As DataTable
Dim b As New GroupTableBuilder("统计表1",DataTables("订单"))
b.Groups.AddDef("日期",DateGroupEnum.Year,"年")
b.Groups.AddDef("日期",DateGroupEnum.Month,"月")
b.Groups.AddDef("产品")
b.Totals.AddDef("客户",AggregateEnum.Count,"订单数") '根据客户列来统计记录数,也就是订单数
dt = b.Build(False) '参数设置为False,生成一个临时表,不在主界面显示
'然后根据统计表生成目录树
Dim trv As WinForm.TreeView = e.Form.Controls("TreeView1")
trv.BuildTree(dt, "年|月|产品","客户= 'CS01'","年,月,产品 DESC") ‘希望只要客户CS01的行’
trv.StopRedraw
For Each nd As WinForm.TreeNode In trv.AllNodes
Dim Year As Integer = nd.DataRow("年")
Dim Month As Integer = nd.DataRow("月")
Dim Product As String = nd.DataRow("产品")
Select Case nd.Level
Case 0
nd.Text = nd.text & "年(" & dt.Compute("Sum(订单数)","年 = " & Year) & "条)"
Case 1
nd.Text = nd.text & "月(" & dt.Compute("Sum(订单数)","年 = " & Year & " And 月 = " & Month) & "条)"
Case 2
nd.Text = nd.text & "(" & nd.DataRow("订单数") & "条)"
End Select
Next
trv.Nodes.Insert("显示所有行","显示所有行(" & dt.Compute("Sum(订单数)") & "条)",0)
trv.ResumeRedraw
树双击事件:
Dim Filter As String = ""
If e.node.Name <> "显示所有行" Then '要用Name属性,不能用Text属性
Dim d1 As Date
Dim d2 As Date
Dim Year As Integer = e.Node.DataRow("年")
Dim Month As Integer = e.Node.DataRow("月")
Dim Product As String = e.Node.DataRow("产品")
Select Case e.Node.Level
Case 0
d1 = New Date(Year,1,1) '取得该年的第一天
d2 = new Date(Year,12,31) '取得该年的最后一天
Filter = "日期 >= #" & d1 & "# And 日期 <= #" & d2 & "#"
Case 1
d1 = New Date(Year, Month, 1) '取得该月的第一天
d2 = new Date(Year, Month, Date.DaysInMonth(Year,Month)) '取得该月的最后一天
Filter = "日期 >= #" & d1 & "# And 日期 <= #" & d2 & "#"
Case 2
d1 = New Date(Year, Month, 1) '取得该月的第一天
d2 = new Date(Year, Month, Date.DaysInMonth(Year,Month)) '取得该月的最后一天
Filter = "日期 >= #" & d1 & "# And 日期 <= #" & d2 & "# And 产品 = '" & Product & "'"
End Select
End If
Tables("订单").Filter = Filter And "客户= 'CS01'" ‘只加载指定客人的行’
为什么实现不了,请专家指教。
此主题相关图片如下:qq图片20140903113152.jpg