title: enabling/ disabling combobox when selected index is selected
body: <p>I'm trying to enable comboxbox when specific country is selected, otherwise should be disabled. </p>
  
  <pre><code>Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
      cboCountry.Items.AddRange(File.ReadAllLines("..\..\TextFiles\countries.txt"))
      cboCounty.Items.AddRange(File.ReadAllLines("..\..\TextFiles\county.txt"))
  
  End Sub
  
  Private Sub cboCountry_SelectedIndexChanged(sender As Object, e As EventArgs) Handles cboCountry.SelectedIndexChanged
      If cboCountry.SelectedIndex = cboCountry.Items.IndexOf("Ireland") Then
  
          cboCounty.Enabled = True
  
      Else
          cboCounty.Enabled = False
  
      End If
  End Sub
  </code></pre>
  
  <p>When I select any country including "Ireland" combobox is disabled </p>