Dim trv As WinForm.TreeView = e.Form.Controls("TreeView1")
trv.GenerateTree("Departments", "Path", "DepartmentName", ".")
以上是生成目录树的代码，path数据如下：
001
001.001
001.001.001
001.001.001.001
001.001.001.002
001.001.002
001.001.002.003
001.001.002.002
001.001.003
001.001.002.001
以下是添加子部门的代码：
Dim trv As WinForm.TreeView = e.Form.Controls("TreeView1")
If trv.SelectedNode IsNot Nothing Then
Dim pd As WinForm.TreeNode = trv.SelectedNode
Dim Index As Integer = 1
If pd.Nodes.count >= 1 Then
Index = CInt(pd.Nodes(pd.nodes.count - 1).name) + 1
End If
Dim nd As WinForm.TreeNode = pd.Nodes.Add(index, "请输入")
trv.SelectedNode = nd
trv.Select
trv.BeginEdit
下方代码的目的是存储新增子节点的信息：
Dim ndr As Row = Tables("Departments").AddNew()
Dim p As DataRow = pd.DataRow
ndr("ParentDepartmentID") = p("DepartmentID")
ndr("Level") = p("Level") + 1
ndr("UpdateDate") = Date.Today
ndr("UpdatedBy") = rsuser
ndr("CompanyId") = 1
End If
下方代码是保存数据的代码：执行下方代码后，会删除上面新增的行，并把赋值存储到新增行上一条数据中。 这个代码哪里错误了
Dim dt As DataTable = DataTables("Departments")
Dim dic As New Dictionary(Of Integer, Integer)
Dim prevLevel As Integer = 0
Dim idxs As String = "-1,"
For Each nd As WinForm.TreeNode In e.Form.Controls("TreeView1").AllNodes
If nd.Level = 0 AndAlso dic.count > 0 Then
Dim temp = dic(0)
dic.Clear
dic.Add(0, temp)
End If
If dic.ContainsKey(nd.Level) = False Then
dic.Add(nd.Level, 1)
Else
dic(nd.Level) = dic(nd.Level) + 1
End If
For i As Integer = nd.level + 1 To prevLevel
dic(i) = 0
Next
prevLevel = nd.Level
Dim ndr As DataRow
If nd.DataRow IsNot Nothing Then
ndr = dt.Find("_Identify = " & nd.DataRow("_Identify"))
Else
' ndr = dt.AddNew
End If
idxs &= ndr("_Identify") & ","
Dim str As String = ""
For i As Integer = 0 To nd.Level
str &= format(dic(i), "000") & "."
Next
ndr("Path") = str.TrimEnd(".")
ndr("DepartmentName") = nd.Text
Next
dt.DeleteFor("_Identify not in (" & idxs & ")")
DataTables("Departments").Save()
同时在部门表的DataRowAdded有如下代码：
e.DataRow.save
e.DataRow("DepartmentID") = e.DataRow("_Identify")