[RESOLVED] autosearch in listview

what i want to do is to search the items in the listview through textbox like when I type something all the items that has the same text that i type will appear or highlighted in the listview

I tried to use this

Code:

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Public Class StudentList
    Dim items As New List(Of ListViewItem)

    Private Sub GetStudents()
        Dim students As List(Of Students)
        students = StudentBAL.GetStudents()

        'lvwStudents.Items.Clear()
        For Each student In students
            items.Add(New ListViewItem(student.ID.ToString))
            With items.Last.SubItems
                .Add(student.LastName)
                .Add(student.FirstName)
                .Add(student.MiddleName)
                .Add(student.Address)
                .Add(student.Gender)
                .Add(student.Age)
                .Add(student.BirthDate)
                .Add(student.YearLevel)
                .Add(student.Course)
                .Add(student.TypeOfEnrollee)
                .Add(student.ContactNo)
            End With
        Next
    End Sub

    Private Sub StudentList_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        GetStudents()
        'column header text should = column name for this to work
        ComboBox1.DataSource = (From ch In lvwStudents.Columns _
                Let header = DirectCast(ch, ColumnHeader) _
                Select header.Text).ToArray()
    End Sub


    Private Function isMatch(ByVal lvi As ListViewItem) As Boolean
        Return lvi.Text.StartsWith(txtSearch.Text)
    End Function

    Private Sub txtSearch_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtSearch.TextChanged
        Dim filteredItems() As ListViewItem = If(txtSearch.Text = "", items.ToArray, Array.FindAll(items.ToArray, Function(lvi) lvi.SubItems(ComboBox1.Text).Text.StartsWith(txtSearch.Text)))
        lvwStudents.Items.Clear()
        lvwStudents.Items.AddRange(filteredItems)
    End Sub

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it has combobox to choose which columns to search to
But when i run it the listview is empty . anyone can tell what is the problem or is their any better way ? thanks in advance :)