VB to C# TreeView problem

[balurajeev84]

Hi,

I am trying to convert a VB.net code to C# .

it is to bind a treeview from a collection. but not finding a Collection which stores treenodes as object.

Cant use hashtable since it automatically sorts the data by key.

Can anybody tell me a collection which takes objects and doesn't sort it.

The code is as follows. can anybody convert this?

Private Sub TreeViewPopulation(ByVal ds As DataSet, Optional ByVal intParent As Integer = 0) 
Dim TvwParent As New TreeNode
 
Dim TvwNode As New TreeNode Dim CollItems As New Collection 
Try
 
tvw.Nodes.Clear()
 
For Each dr As DataRow In ds.Tables(0).Rows ''''assigning dataset values to a collection as node
 
TvwNode = New TreeNode(dr("Employee_Nm").ToString) 
TvwNode.Tag = dr("Parent")
 
CollItems.Add(TvwNode, dr("Employee_Id")) 
Next
 
For Each TvwNode In CollItems 
TvwParent = Nothing
 
'find parent of a node
 
If Val(TvwNode.Tag) <> intParent Then TvwParent = CType(CollItems.Item(TvwNode.Tag.ToString), TreeNode) 
If Not TvwParent Is Nothing Then
 
'add child node to its parent node
 
CType(CollItems.Item(TvwNode.Tag.ToString), TreeNode).Nodes.Add(TvwNode.Clone) 
Else
 
tvw.Nodes.Add(TvwNode) 'add node to Treeview
 
End If
 
Next
 
Catch ex As Exception MsgBox("TreeView Population Error", MsgBoxStyle.Critical) 
End Try
 
End Sub
 

plz dont give me the online code converter

Thanks in Advance, Balu

[Plater]

Anything in the System.Collecti ons namespace would be fine?
Maybe:
System.Collecti ons.Generic.Lis t<TreeNode>
The functionality should be roughly the same.

[Frinavale]

Hi Balu,
Welcome to theScripts!

In order to help answer your questions more quickly please provide a meaningful Title for any threads you start (your title should reflect the problem your having).
Check out the Posting Guidelines for a set of rules that we follow here and especially take a look at the section on Please Use Appropriate Titles for New Threads. This not only helps us to answer your question more quickly but also helps to ensure that other members, and the general public, will have a better chance of finding answers to any similar questions.

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Thanks!

-MODERATOR Frinny

[balurajeev84]

Anything in the System.Collecti ons namespace would be fine?
Maybe:

The functionality should be roughly the same.

i cant access System.Collecti ons.Generic.Lis t<TreeNode>

[balurajeev84]

Anything in the System.Collecti ons namespace would be fine?
Maybe:
System.Collecti ons.Generic.Lis t<TreeNode>
The functionality should be roughly the same.

i didnt get System.Collecti ons.Generic.Lis t<TreeNode>

[Frinavale]

You're code is not completely valid. You have a line on which you have 2 Dim statements (this is not valid in VB ...since VB doesn't use ";"'s there's no way for the compiler to know what the end of the statement is)

Have you taken a look at the TreeNode Class? It has an example on how to manipulate TreeNodes in both C# and VB.NET.

-Frinny

[Plater]

i didnt get System.Collecti ons.Generic.Lis t<TreeNode>

Are you sure you're in .NET?

In the solution explorer, under references, there should be some namespaces listed.
Make sure that "System" is one of them.