如何通过临时表生成目录树并进行选择 - 专家坐堂 - Foxtable(狐表) - 新一代数据库软件，完美融合Access、Foxpro、Excel、vb.net之优势，人人都能掌握的快速软件开发工具!

1、AfterLoad事件中

Dim dt As DataTable

Dim jb As New SQLJoinTableBuilder("查询表1","招标信息")

jb.AddTable("招标信息","项目编号","标录信息","项目编号")

jb.AddCols("{标录信息}.项目编号","{招标信息}.项目名称","咨询类型","归属部门","投标地区")

dt = jb.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(dt,"咨询类型|归属部门|投标地区")

trv.Nodes.Insert("显示所有行",0)

2、

Dim nms As String() = {"咨询类型","归属部门","投标地区"} '指定生成目录树的各列

Dim qts As String() = {"'","'","'"} '指定将各列的值括起来的符号,这里都是字符型,所以都是单引号

Dim trv As WinForm.TreeView = e.Sender

Dim flt As String

Dim nd As WinForm.TreeNode

For Each nd In e.node.allNodes '清除子节点的选中标记

nd.Checked = False

nd = e.Node.ParentNode

Do While nd IsNot Nothing '清除父节点的选中标记

nd.Checked = False

nd = nd.ParentNode

Loop

For Each nd In trv.AllNodes

If nd.Checked Then

Dim rts() As String = nd.FullPath.Split("\")

Dim val As String = ""

For i As Integer = 0 To rts.length - 1

If val > "" Then

val = val & " And "

End If

val = val & nms(i) & " = " & qts(i) & rts(i) & qts(i)

If flt > "" Then

flt = flt & " Or (" & val & ")"

Else

flt = val

End If

Tables("标录信息_table1").Filter = flt

我的需求是：通过生成临时表"查询表1"，并生成目录树，根据“项目编号”列进行筛选？如何调整？

下载信息 [文件大小：下载次数： ]
点击浏览该文件:目录树.table

[此贴子已经被作者于2018/8/14 16:54:20编辑过]

下载信息 [文件大小：下载次数： ]
点击浏览该文件:目录树.table

.NET Framework 版本：2.0.50727.8762

Foxtable 版本：2018.7.23.1

错误所在事件：窗口,标录信息,AfterLoad

详细错误信息：

未将对象引用设置到对象的实例。

[此贴子已经被作者于2018/8/14 18:05:13编辑过]

不要设置成自动打开。

照抄代码，afterLoad事件也要写代码。

[此贴子已经被作者于2018/8/14 18:28:37编辑过]

老师我从论坛中找一了个示例，但不知道下面红色部分 Tb1.Filter = (1 = 2) 这段代码如何调整

Dim s As String = e.Form.Controls("CheckedComboBox筛选树").Text

'Dim tb1 As Table = Tables(e.Form.Name & "_Table1")

Dim tb1 As Table = Tables("开标标录台帐_Table1")

Dim Colstr() As String

Dim qts As String() = {"'","#",""}

Dim trv As WinForm.TreeView = e.Sender

Dim flt As String = ""

Dim nd As WinForm.TreeNode

Dim pd As WinForm.TreeNode

Dim notchecked As Integer = 0

Colstr = s.split("|")

For i As Integer = 0 To Colstr.Length - 1

If Tb1.Cols.Contains(Colstr(i)) = False Then

If trv.Nodes.Count > 0 Then

trv.Nodes.Clear()

End If

'e.Form.Controls("CheckedComboBox筛选树").Text = "选择筛选列(最好包括拼音)"

Return

End If

If e.Node.Name = "显示所有项目" Then

If e.Node.Checked = True Then

For Each nd In trv.AllNodes

If nd.Name <> "显示所有项目" Then

nd.Checked = False

End If

Tb1.Filter = ""

Else

For Each nd In trv.AllNodes

nd.Checked = False

Tb1.Filter = (1 = 2)

End If

trv.CollapseAll

Return

Else

trv.AllNodes(0).Checked = False

End If

For Each nd In e.node.allNodes

nd.Checked = False

pd = e.Node.ParentNode

Do While pd IsNot Nothing

pd.Checked = False

pd = pd.ParentNode

Loop

For Each nd In trv.AllNodes

If nd.Checked Then

Dim rts() As String = nd.FullPath.Split("\")

Dim val As String = ""

For i As Integer = 0 To rts.length - 1

If Tb1.DataTable.DataCols(Colstr(i)).IsString Then

If rts(i) <> "空" Then

If val > "" Then

val = val & " And "

val = val & Colstr(i) & " = " & qts(0) & rts(i) & qts(0)

Else

val = val & Colstr(i) & " = " & qts(0) & rts(i) & qts(0)

End If

ElseIf rts(i) = "空" Then

If val > "" Then

val = val & " And "

val = val & Colstr(i) & " Is Null"

Else

val = val & Colstr(i) & " Is Null"

End If

ElseIf Tb1.DataTable.DataCols(Colstr(i)).IsDate Then

If rts(i) <> #0001-1-1 0:00:00# Then

If val > "" Then

val = val & " And "

val = val & Colstr(i) & " = " & qts(1) & rts(i) & qts(1)

Else

val = val & Colstr(i) & " = " & qts(1) & rts(i) & qts(1)

End If

ElseIf rts(i) = #0001-1-1 0:00:00# Then

If val > "" Then

val = val & " And "

val = val & Colstr(i) & " Is Null"

Else

val = val & Colstr(i) & " Is Null"

End If

ElseIf Tb1.DataTable.DataCols(Colstr(i)).IsNumeric Then

If rts(i) <> 0 Then

If val > "" Then

val = val & " And "

val = val & Colstr(i) & " = " & qts(2) & rts(i) & qts(2)

Else

val = val & Colstr(i) & " = " & qts(2) & rts(i) & qts(2)

End If

ElseIf rts(i) = 0 Then

If val > "" Then

val = val & " And "

val = val & Colstr(i) & " Is Null"

Else

val = val & Colstr(i) & " Is Null"

End If

ElseIf Tb1.DataTable.DataCols(Colstr(i)).IsBoolean Then

If rts(i) <> False Then

If val > "" Then

val = val & " And "

val = val & Colstr(i) & " = " & qts(0) & True & qts(0)

Else

val = val & Colstr(i) & " = " & qts(0) & True & qts(0)

End If

ElseIf rts(i) = False Then

If val > "" Then

val = val & " And "

val = val & Colstr(i) & " = " & qts(0) & False & qts(0)

Else

val = val & Colstr(i) & " = " & qts(0) & False & qts(0)

End If

If flt > "" Then

flt = flt & " Or (" & val & ")"

Else

flt = val

End If

notchecked + = 1

End If

Dim dt As DataTable = Vars("dt")

Dim nids As String = dt.GetComboListString("系统编号",flt)

If flt > "" AndAlso notchecked > 0 Then

Tb1.Filter = "系统编号 In ('" & nids.Replace("|","','") & "')"

Else

Tb1.Filter = (1 = 2)

End If

不需要改啊

1、你现在这样写有什么问题？

2、当没有勾选的时候，不就是全部都不显示吗？

老师出现二个错误

此主题相关图片如下：919.png

此主题相关图片如下：55049.png

下载信息 [文件大小：下载次数： ]
点击浏览该文件:目录树.table

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点击浏览该文件:目录树 (2).table

主题：如何通过临时表生成目录树并进行选择