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Find Checked Treenode In TreeView Control Using LINQ In VB.NET

Here's one way of searching through a treenode using LINQ. Assuming that the search criteria is a List or array object. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Public Class Form1 Public Shared mat As List( Of String ) = Nothing Private Sub Form1_Load (sender As System.Object, e As System.EventArgs) Handles MyBase .Load mat = New List( Of String ) mat.Add( "Books" ) mat.Add( "VB" ) mat.Add( "Drinks" ) mat.Add( "Food" ) mat.Add( "Tea" ) mat.Add( "Chod" ) End Sub Private Sub Button1_Click (sender As System.Object, e As System.EventArgs) Handles Button1.Click If Not (mat Is Nothing ) Then For Each tn As String In mat If (tvMat.Nodes.Find(tn, True ).FirstOrDefault() IsNot Nothing ) Then If (tvMat.Nodes

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