主题：统计目录树问题

我想将图中的加载树显示为例如：加载所有数据（在场274人，退场100人）。其中274人=374人（总人数）-100人（退场人数），请问以下代码该如何修改

Dim dg As DataTable

Dim b As New SQLGroupTableBuilder("统计表1","劳务人员登记表")

b.ConnectionName = "xlgl"

If User.Name = "开发者" Or User.Name = "管理员" Then

    b.Filter = ""

Else

    b.Filter = "承包人机构 in ('" & User.Roles.replace(",","','") & "') or 监理机构 in ('" & User.Roles.replace(",","','") & "')  or 业主机构 in ('" & User.Roles.replace(",","','") & "') or 劳务队负责人 in ('" & User.Roles.replace(",","','") & "')"

End If

b.Groups.AddDef("项目名称")

b.Groups.AddDef("施工合同段")

b.Groups.AddDef("劳务队名称")

b.Groups.AddDef("工种")

b.Totals.AddDef("姓名",AggregateEnum.Count,"总人数") '根据客户列来统计记录数,也就是订单数

b.Totals.AddDef("退场时间",AggregateEnum.Count,"退场人数") '根据客户列来统计记录数,也就是订单数

dg = b.Build(True) '参数设置为True,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(dg,"项目名称|施工合同段|劳务队名称|工种")

trv.StopRedraw

For Each nd As WinForm.TreeNode In trv.AllNodes

    Dim Xmmc As String = "'" & nd.DataRow("项目名称") & "'"

    Dim Xghtd As String = "'" & nd.DataRow("施工合同段") & "'"

    Dim Lwdmc As String = "'" & nd.DataRow("劳务队名称") & "'"

    Dim Gz As String = "'" & nd.DataRow("工种") & "'"

    Select Case nd.Level

        Case 0

            nd.Text = nd.text & "(" & dg.Compute("Sum(总人数)","项目名称 = " & Xmmc) & "人)"

        Case 1

            nd.Text = nd.text & "(" & dg.Compute("Sum(总人数)","项目名称 = " & Xmmc & " And 施工合同段 = " & Xghtd) & "人)"

        Case 2

            nd.Text = nd.text & "(" & dg.Compute("Sum(总人数)","项目名称 = " & Xmmc & " And 施工合同段 = " & Xghtd & " And 劳务队名称 = " & Lwdmc) & "人)"

        Case 3

            nd.Text = nd.text & "(" & nd.DataRow("总人数") & "人)"

    End Select

Next

trv.Nodes.Insert("加载所有数据","加载所有数据(" & dg.Compute("Sum(总人数)") & "人)",0)

trv.ResumeRedraw

e.Form.Controls("TextBox5").Value = 1 & "/" & DataTables("劳务人员登记表").TotalPages

vars("劳务人员登记表filter") = DataTables("劳务人员登记表").LoadFilter

此主题相关图片如下：1111.png