主题：[求助]会计科目递归函数

此主题相关图片如下：科目设置.jpg

 

按教程：

 

1、在内部函数中新建一个函数，名为AddChildren，代码为：

 

Dim nd As WinForm.TreeNode = args(0)
Dim dt As DataTable = args(1)
Dim drs As List(of DataRow)
drs = dt.Select("[科目级数] = '" & nd.name & "'")
For Each dr As DataRow In drs
    Dim cd As Winform.TreeNode = nd.Nodes.Add(dr("科目编号"),dr("科目名称"))
    Functions.Execute("AddChildren",cd,dt)
Next

 

2、在窗口中加入一个目录树控件和一个按钮，按钮的代码为：+

 

Dim tr As WinForm.TreeView = e.Form.Controls("TreeView1")
Dim nd As WinForm.TreeNode
Dim dt As DataTable = DataTables("会计科目")
tr.StopRedraw()
tr.Nodes.Clear
For Each dr As DataRow In dt.datarows
    If dr.IsNull("科目级数") Then
        nd = tr.Nodes.Add(dr("科目编号"),dr("科目名称"))
        Functions.Execute("AddChildren",nd,dt)
    End If
Next
tr.ResumeRedraw()

 

 

 

此主题相关图片如下：生成目录树.jpg

 

 

点击没反应，代码错在哪？该怎么写才能生成这样的目录树，

 

此主题相关图片如下：目录树.jpg

 

高手们指点一二啦