Sets or returns the 0-based index of the first column that is shown in the worksheet.

<p> public int FirstShownColumn{ get; set; }</p>
<p>Public Property FirstShownColumn() As Integer</p>

          //--- Get FirstShownColumn
          int firstCol = ws.FirstShownColumn;

          //--- Set FirstShownColumn
          ws.FirstShownColumn = 5;
        
          '--- Get FirstShownColumn
          Dim firstCol As Integer = ws.FirstShownColumn

          '--- Set FirstShownColumn
          ws.FirstShownColumn = 5