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{description}
{excerpt}Saves a specified [Workbook|Workbook] as a  OOXML format (Excel 2007 or later) .xlsx or  BIFF8 format (Excel 97 or later) .xls file.{excerpt}
{signature:C#}
 public virtual void Save(Workbook workbook, System.String fileName)
{signature}{signature:vb.net}
Public Overridable Sub Save(ByVal workbook As Workbook, ByVal fileName As String)
{signature}
{parameters}
{param:workbook}A {{Workbook}} object representing the workbook to save.{param}
{param:fileName}Specifies a complete path and file name for the Workbook. ExcelWriter will save the file to this location. If a file with the same name exists, it will be overwritten by the new Excel file.{param}
{exceptions}
{exception:System.Exception}If there is a problem creating, opening, or writing to the file specified, or reading from the workbook object.{exception}
{exception:System.ArgumentException}If the extension of the filename given is invalid for the given workbook. For example, a file created with Excel 2007, that has macros must be saved with the .xlsm extension{exception}
{example}{code:csharp|title=C#}
ExcelApplication oExcelApp = new ExcelApplication();
Workbook wb = oExcelApp.Create(ExcelApplication.FileFormat.Xlsx);
oExcelApp.Save(wb,@"C:\Sales2003\June.xlsx");
{code}
{code:vb.net|title=vb.net}
Dim oExcelApp As New ExcelApplication()
Dim wb As Workbook = oExcelApp.Create(ExcelApplication.FileFormat.Xlsx)
oExcelApp.Save(wb, "C:\Sales2003\June.xlsx")
{code}

{example}