{description}
{excerpt}Determines whether the workbook can only be opened in read\-only mode.{excerpt}
{signature:C#}
 public boolean ReadOnly{ get; set; }
{signature}{signature:vb.net}
Public Property [ReadOnly]() As Boolean
{signature}
{example}{code:csharp|title=C#}

          //--- Get the ReadOnly value for the workbook
          bool readOnly = wb.ReadOnly;

          //--- Set the ReadOnly value for the workbook
          wb.ReadOnly = true;
        {code}
{code:vb.net|title=vb.net}

          '--- Get the ReadOnly value for the workbook
          Dim readOnly As Boolean = wb.ReadOnly

          '--- Set the ReadOnly value for the workbook
          wb.ReadOnly = True
        {code}

{example}