Find String in DataGridView

Find String in DataGridView, VB.Net

'Prosesnya adalah  membandingkan string dari Object Textbox dengan Kolom di DataGridView
'Kalo datanya ketemu, akan di set sebagai Current Row
 
 Public Shared Sub _FindRow(ByVal _DataGridView As DataGridView, ByVal _String As String)
        Dim data As String
        For x = 0 To _DataGridView.Rows.Count - 1
            data = _DataGridView.Rows(x).Cells(1).Value
            Try
                If UCase(data.Substring(0, _STring.Length)) = UCase(_STring) Then
                    _DataGridView.CurrentCell = _DataGridView.Rows(x).Cells(0)
                    _DataGridView.CurrentRow.Selected = True
                    Exit For
                End If
            Catch ex As Exception
                exit for
            End Try            
        Next
End Sub