That's the code i'm working with.
Code:
Imports System.IO
Imports System.ComponentModel

Public Class Form1
    Private Sub Form1_Load(ByVal sender As Object, _
                       ByVal e As EventArgs) Handles MyBase.Load
        'Display a list of available drives in the ListBox.
        Me.srDrives.DataSource = DriveInfo.GetDrives()
    End Sub

    Private Sub srFind_Click(ByVal sender As Object, _
                              ByVal e As EventArgs) Handles srFind.Click
        'Get the selected drive path.
        Dim drive As String = Me.srDrives.Text

        'Start searching the drive for files asynchronously.
        Me.BackgroundWorker1.RunWorkerAsync(drive)
    End Sub

    Private Sub srCancel_Click(ByVal sender As Object, _
                              ByVal e As EventArgs) Handles srCancel.Click
        'Cancel the asynchronous search.
        Me.BackgroundWorker1.CancelAsync()
    End Sub

    Private Sub BackgroundWorker1_DoWork(ByVal sender As Object, _
                                         ByVal e As DoWorkEventArgs) Handles BackgroundWorker1.DoWork
        Dim drive As String = CStr(e.Argument)
        Dim worker As BackgroundWorker = DirectCast(sender, BackgroundWorker)

        'Initiate the recursive file search.
        'If GetFiles returns False it means the search was cancelled.
        e.Cancel = Not Me.GetFiles(drive, worker)
    End Sub

    Private Sub BackgroundWorker1_ProgressChanged(ByVal sender As Object, _
                                                  ByVal e As ProgressChangedEventArgs) Handles BackgroundWorker1.ProgressChanged
        'Get the items passed from the secondary thread.
        Dim items As ListViewItem() = DirectCast(e.UserState, ListViewItem())
        'Add the items to the list.
        Me.srList.Items.AddRange(items)
    End Sub

    Private Sub BackgroundWorker1_RunWorkerCompleted(ByVal sender As Object, _
                                                     ByVal e As RunWorkerCompletedEventArgs) Handles BackgroundWorker1.RunWorkerCompleted
        If e.Cancelled Then
            'The search was cancelled before completing.
            MessageBox.Show("Operation cancelled")
        Else
            'The search completed normally.
            MessageBox.Show("Operation complete")
        End If
    End Sub

    Private Function GetFiles(ByVal folder As String, ByVal worker As BackgroundWorker) As Boolean
        Dim cancelled As Boolean = False

        If worker.CancellationPending Then
            'The user has requested that the search be cancelled.
            cancelled = True
        Else
            Try
                'Get the files in the current folder.
                Dim files As String() = Directory.GetFiles(folder)
                Dim upperBound As Integer = files.GetUpperBound(0)
                Dim items(upperBound) As ListViewItem
                Dim file As String

                'Create a ListViewItem for each file.
                For index As Integer = 0 To upperBound
                    file = files(index)
                    items(index) = New ListViewItem(New String() {Path.GetFileName(file), _
                                                                  Path.GetDirectoryName(file)})
                Next

                'Pass the items to the UI thread to be displayed.
                worker.ReportProgress(0, items)

                'Search each subfolder.
                For Each subfolder As String In Directory.GetDirectories(folder)
                    'This is the recursive call, i.e. the method calls itself.
                    If Not Me.GetFiles(subfolder, worker) Then
                        'The user has requested that the search be cancelled.
                        cancelled = True
                        Exit For
                    End If
                Next
            Catch ex As Exception
                'The folder is inaccessible.  Ignore and continue.
            End Try
        End If

        'The sub-search completed if it was not cancelled.
        Return Not cancelled
    End Function
End Class
What a want to do is that when i adds "items" i want it to read the item's string and compare it with the text in the combo box, and if both texts are the same, i want the search to stop and display a msgbox with "file found".

And if it's posible, to erase the other items that don't match the text in the combobox.

But I don't know how to do that.

THANKS!