title: Open a workbook using FileDialog and manipulate it in Excel VBA
body: <p>I am learning how to use Excel macros and I found this code:</p>
  
  <pre><code>Dim fd As Office.FileDialog
  
  Set fd = Application.FileDialog(msoFileDialogFilePicker)
  
  With fd
  
      .AllowMultiSelect = False
      .Title = "Please select the file to kill his non colored cells"
      .Filters.Add "Excel", "*.xls"
      .Filters.Add "All", "*.*"
  
      If .Show = True Then
          txtFileName = .SelectedItems(1)
      End If
  
  End With
  </code></pre>
  
  <p>This code opens the FileDialog. How can I open the selected Excel file without over-writing the previously opened?</p>