Loading and saving workbook in UWP

30 May 20232 minutes to read

Opening an existing workbook

You can open an existing workbook by using the overloads of Open methods of IWorkbooks interface.

C# [Windows-specific]

//Creates a new instance for ExcelEngine
ExcelEngine excelEngine = new ExcelEngine();

//Initialize IApplication
IApplication application = excelEngine.Excel;

//Instantiates the File Picker
FileOpenPicker openPicker = new FileOpenPicker();
openPicker.SuggestedStartLocation = PickerLocationId.Desktop;
openPicker.FileTypeFilter.Add(".xlsx");
openPicker.FileTypeFilter.Add(".xls");
StorageFile file = await openPicker.PickSingleFileAsync();

//Opens the workbook
IWorkbook workbook = await application.Workbooks.OpenAsync(file, ExcelOpenType.Automatic);

Saving an Excel workbook

You can also save the created or manipulated workbook using overloads of SaveAs methods.

C# [Windows-specific]

//Creates a new instance for ExcelEngine
ExcelEngine excelEngine = new ExcelEngine();

//Initialize IApplication
IApplication application = excelEngine.Excel;

//Instantiates the File Picker
FileOpenPicker openPicker = new FileOpenPicker();
openPicker.SuggestedStartLocation = PickerLocationId.Desktop;
openPicker.FileTypeFilter.Add(".xlsx");
openPicker.FileTypeFilter.Add(".xls");
StorageFile file = await openPicker.PickSingleFileAsync();

//Opens the workbook
IWorkbook workbook = await application.Workbooks.OpenAsync(file, ExcelOpenType.Automatic);

//To-Do some manipulation
//To-Do some manipulation

//Set the version of the workbook
workbook.Version = ExcelVersion.Xlsx;

//Initializes FileSavePicker
FileSavePicker savePicker = new FileSavePicker();
savePicker.SuggestedStartLocation = PickerLocationId.Desktop;
savePicker.SuggestedFileName = "Output";
savePicker.FileTypeChoices.Add("Excel Files", new List<string>() { ".xlsx" });

//Creates a storage file from FileSavePicker
StorageFile storageFile = await savePicker.PickSaveFileAsync();

//Saves changes to the specified storage file
await workbook.SaveAsAsync(storageFile);