Solved

Populate Treeview dynamically from SQL 2000 stored procedure in VB.net 2.0

Posted on 2009-05-18
3
1,034 Views
Last Modified: 2012-05-07
Hi
How do I dynamically pouplate a treeview in VB.net 2.0 (visual studio 2005) from a sql 2000 stored procedure?
Number of child nodes changes.The database structUre is as below

ContenId ParentContentID Name
1             0                          Main
2             1                          Home
3              1                          News
This is to populate a treeview to get all the pages/menu in CMS and for users to allow add/edit pages and add new pages under existing pages as displayed in the Treeview.
Working on a deadline - so any help is appreciated.
Awaiting responsE
Thanks a Ton.
0
Comment
Question by:NewUser09
  • 2
3 Comments
 
LVL 34

Accepted Solution

by:
Brian Crowe earned 150 total points
ID: 24416914
I have attached some code that I used to do something very similar.  Basically you establish a root node then you just recursively add children referencing the ParentID.

Hope this helps

BriCrowe
	Private Sub FillTaskTree()
 
		Dim tn As TreeNode
		Dim i As Integer
		Dim dv As New DataView(dsUserAdmin.Tables("Task"))
 
		tvTasks.Nodes.Clear()
 
		dv.RowFilter = "ParentTaskID IS NULL"
		dv.Sort = "DisplayOrder"
		For i = 0 To dv.Count - 1
			tn = tvTasks.Nodes.Add(dv(i)("Name").ToString)
			tn.Tag = dv(i)("TaskID")
			tn.ImageIndex = TaskIcon.ClosedContainer
			tn.SelectedImageIndex = TaskIcon.ClosedContainer
			FillTaskChildNodes(tn)
			tn.Expand()
		Next
	End Sub
 
	Private Sub FillTaskChildNodes(ByVal tnParent As TreeNode)
 
		Dim tnChild As TreeNode
		Dim i As Integer
		Dim dv As New DataView(dsUserAdmin.Tables("Task"))
 
		Dim strfilter As String = "ParentTaskID = " + tnParent.Tag.ToString + _
		 " AND TaskTypeID <> " + CInt(TaskType.Action).ToString
		dv.RowFilter = strfilter
		dv.Sort = "DisplayOrder"
		For i = 0 To dv.Count - 1
			tnChild = tnParent.Nodes.Add(dv(i)("Name").ToString)
			tnChild.Tag = dv(i)("TaskID")
			Select Case CInt(dv(i)("TaskTypeID"))
				Case TaskType.Container
					tnChild.ImageIndex = TaskIcon.ClosedContainer
					tnChild.SelectedImageIndex = TaskIcon.ClosedContainer
				Case TaskType.Tool
					tnChild.ImageIndex = TaskIcon.Tool
					tnChild.SelectedImageIndex = TaskIcon.Tool
				Case TaskType.Report
					tnChild.ImageIndex = TaskIcon.Report
					tnChild.SelectedImageIndex = TaskIcon.Report
			End Select
			FillActionNodes(tnChild)
			FillTaskChildNodes(tnChild)
		Next
	End Sub

Open in new window

0
 

Author Comment

by:NewUser09
ID: 24417276
Hi

Thank u very much for u'r comment.
I guess u are using .net 3 framework -Iam using .net framework 2.0 and I have found  a way to do it using the below link.
http://aspalliance.com/732 

Thanks
0
 
LVL 34

Expert Comment

by:Brian Crowe
ID: 24423107
Actually the code is fairly old and was written in VS2003 so I expect I was using .Net 1.1 but as long as you found something that works for you.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I have a large data set and a SSIS package. How can I load this file in multi threading?
The article shows the basic steps of integrating an HTML theme template into an ASP.NET MVC project
Viewers will learn how to use the INSERT statement to insert data into their tables. It will also introduce the NULL statement, to show them what happens when no value is giving for any given column.
Viewers will learn how to use the UPDATE and DELETE statements to change or remove existing data from their tables. Make a table: Update a specific column given a specific row using the UPDATE statement: Remove a set of values using the DELETE s…

813 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now