Parent - Child ...

I have a situation where I have data in my database in Windows Explorer style. Where there can be n-number of Parent-Child relationships. A Parent can have 5 childs, out of those five, 2 may have more childs and so on ... How do I retrieve this data in ...

1. Either direct in XML format ... in that tree style ... so that I can easily parse through the xml and load in treeview.

2. Or if that is not possible, then normal style, but what logic should I use to load this data in a TreeView.

I am struggling with logic here ...

:(

I would liek to help, but give mre information...
what type of database? do you mean it is it on a server or in XML files? ...

Its a SQL Server database. There is a table. Where you can create folders/Child folders. ( its the information ) A child folder will have a parent. Now I wanna display all this information in a treeview ... how ?

Sorry, but I don't get you exactly, but a series of loops may do the job in a far try.

this, mate?

VB Code:

Dim cn As New SqlConnection()
   Dim da As New SqlDataAdapter()
   Dim ds As New DataSet()
   Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
      cn.ConnectionString = "user id=sa;password=password;initial catalog=pubs"
      cn.Open()
 
      ds.Tables.Add(New DataTable("titles"))
      ds.Tables.Add(New DataTable("publishers"))
 
      da.SelectCommand = New SqlCommand("select * from titles", cn)
      da.Fill(ds.Tables("titles"))
      da.SelectCommand = New SqlCommand("select * from publishers", cn)
      da.Fill(ds.Tables("publishers"))
 
      out()
   End Sub
 
   Sub out()
      Dim r1 As DataRow
      Dim i As Integer = 0
      For Each r1 In ds.Tables("titles").Rows
         TreeView1.Nodes.Add(r1(0).ToString)
         TreeView1.Nodes(i).Nodes.Add(r1(1).ToString)
         TreeView1.Nodes(i).Nodes.Add(r1(2).ToString)
         Dim s As String = r1(3).ToString
         TreeView1.Nodes(i).Nodes.Add(s) ' publisher
         TreeView1.Nodes(i).Nodes.Add(r1(4).ToString)
         TreeView1.Nodes(i).Nodes.Add(r1(5).ToString)
         TreeView1.Nodes(i).Nodes.Add(r1(6).ToString)
         TreeView1.Nodes(i).Nodes.Add(r1(7).ToString)
         TreeView1.Nodes(i).Nodes.Add(r1(8).ToString)
         TreeView1.Nodes(i).Nodes.Add(r1(9).ToString)
 
         ds.Tables("publishers").Clear()
         da.SelectCommand = New SqlCommand("select * from publishers where pub_id='" & s & "'", cn)
         da.Fill(ds.Tables("publishers"))
         Dim r2 As DataRow
         For Each r2 In ds.Tables("publishers").Rows
            TreeView1.Nodes(i).Nodes(2).Nodes.Add(r2(1).ToString)
            TreeView1.Nodes(i).Nodes(2).Nodes.Add(r2(2).ToString)
            TreeView1.Nodes(i).Nodes(2).Nodes.Add(r2(3).ToString)
            TreeView1.Nodes(i).Nodes(2).Nodes.Add(r2(4).ToString)
         Next
 
         i += 1
      Next
   End Sub