Importing and Exporting CSV Files

GcSpreadSheet has additional settings that are available when saving or loading CSV files. You can only save or load text, include row or column headers, save or load unformatted values, export or import formulas, and set the encoding.

You can use the OpenCsvAsync or SaveCsvAsync method in code.

Using Code

This example opens and saves CSV files.

CS	Copy Code
private async void Button_Click_1(object sender, RoutedEventArgs e) { try { var filePicker = new Windows.Storage.Pickers.FileSavePicker(); filePicker.FileTypeChoices.Add("CSV Files", new List<string>() { ".csv" }); filePicker.SuggestedFileName = "New SpreadSheet File"; Windows.Storage.StorageFile storageFile = await filePicker.PickSaveFileAsync(); if (storageFile != null) { using (var stream = await storageFile.OpenStreamForWriteAsync()) { var fileName = storageFile.FileType.ToUpperInvariant(); await gcSpreadSheet1.Sheets[0].SaveCsvAsync(stream, GrapeCity.Xaml.SpreadSheet.Data.TextFileSaveFlags.None); } } } catch (Exception ex) { Windows.UI.Popups.MessageDialog dialog = new Windows.UI.Popups.MessageDialog(ex.Message, "Error"); dialog.ShowAsync(); } } private async void Button_Click_2(object sender, RoutedEventArgs e) { try { var filePicker = new Windows.Storage.Pickers.FileOpenPicker(); filePicker.FileTypeFilter.Add(".csv"); Windows.Storage.StorageFile storageFile = await filePicker.PickSingleFileAsync(); if (storageFile != null) { using (var stream = await storageFile.OpenStreamForReadAsync()) { await gcSpreadSheet1.Sheets[0].OpenCsvAsync(stream, GrapeCity.Xaml.SpreadSheet.Data.TextFileOpenFlags.None); } } } catch (Exception ex) { Windows.UI.Popups.MessageDialog dialog = new Windows.UI.Popups.MessageDialog(ex.Message, "Error"); dialog.ShowAsync(); } }

Copy Code

private async void Button_Click_1(object sender, RoutedEventArgs e)
        {
            try
            {
                var filePicker = new Windows.Storage.Pickers.FileSavePicker();
                filePicker.FileTypeChoices.Add("CSV Files", new List<string>() { ".csv" });
                filePicker.SuggestedFileName = "New SpreadSheet File";
                Windows.Storage.StorageFile storageFile = await filePicker.PickSaveFileAsync();
                if (storageFile != null)
                {
                    using (var stream = await storageFile.OpenStreamForWriteAsync())
                    {
                        var fileName = storageFile.FileType.ToUpperInvariant();
                       await gcSpreadSheet1.Sheets[0].SaveCsvAsync(stream, GrapeCity.Xaml.SpreadSheet.Data.TextFileSaveFlags.None);
                    }
                }
            }
            catch (Exception ex)
            {
                Windows.UI.Popups.MessageDialog dialog = new Windows.UI.Popups.MessageDialog(ex.Message, "Error");
                dialog.ShowAsync();
            }          
        }
        private async void Button_Click_2(object sender, RoutedEventArgs e)
        {
            try
            {
                var filePicker = new Windows.Storage.Pickers.FileOpenPicker();
                filePicker.FileTypeFilter.Add(".csv");               
                Windows.Storage.StorageFile storageFile = await filePicker.PickSingleFileAsync();
                if (storageFile != null)
                {
                    using (var stream = await storageFile.OpenStreamForReadAsync())
                    {
                       await gcSpreadSheet1.Sheets[0].OpenCsvAsync(stream, GrapeCity.Xaml.SpreadSheet.Data.TextFileOpenFlags.None);
                    }
                }
            }
            catch (Exception ex)
            {
                Windows.UI.Popups.MessageDialog dialog = new Windows.UI.Popups.MessageDialog(ex.Message, "Error");
                dialog.ShowAsync();
            }
        }

VB	Copy Code
Private Async Sub Button_Click_1(sender As Object, e As RoutedEventArgs) Try Dim filePicker As New Windows.Storage.Pickers.FileSavePicker() filePicker.FileTypeChoices.Add("CSV Files", New List(Of String)() From {".csv"}) filePicker.SuggestedFileName = "New SpreadSheet File" Dim storageFile As Windows.Storage.StorageFile = Await filePicker.PickSaveFileAsync() If storageFile IsNot Nothing Then Using stream = Await storageFile.OpenStreamForWriteAsync() Dim fileName = storageFile.FileType.ToUpperInvariant() await gcSpreadSheet1.Sheets(0).SaveCsvAsync(stream, GrapeCity.Xaml.SpreadSheet.Data.TextFileSaveFlags.None) End Using End If Catch ex As Exception Dim dialog As Windows.UI.Popups.MessageDialog = New Windows.UI.Popups.MessageDialog(ex.Message, "Error") dialog.ShowAsync() End Try End Sub Private Async Sub Button_Click_2(sender As Object, e As RoutedEventArgs) Try Dim filePicker As New Windows.Storage.Pickers.FileOpenPicker() filePicker.FileTypeFilter.Add(".csv") Dim storageFile As Windows.Storage.StorageFile = Await filePicker.PickSingleFileAsync() If storageFile IsNot Nothing Then Using stream = Await storageFile.OpenStreamForReadAsync() await gcSpreadSheet1.Sheets(0).OpenCsvAsync(stream, GrapeCity.Xaml.SpreadSheet.Data.TextFileOpenFlags.None) End Using End If Catch ex As Exception Dim dialog As Windows.UI.Popups.MessageDialog = New Windows.UI.Popups.MessageDialog(ex.Message, "Error") dialog.ShowAsync() End Try End Sub

Copy Code

Private Async Sub Button_Click_1(sender As Object, e As RoutedEventArgs)
        Try
            Dim filePicker As New Windows.Storage.Pickers.FileSavePicker()
            filePicker.FileTypeChoices.Add("CSV Files", New List(Of String)() From {".csv"})
            filePicker.SuggestedFileName = "New SpreadSheet File"
            Dim storageFile As Windows.Storage.StorageFile = Await filePicker.PickSaveFileAsync()
            If storageFile IsNot Nothing Then
                Using stream = Await storageFile.OpenStreamForWriteAsync()
                    Dim fileName = storageFile.FileType.ToUpperInvariant()                   
                   await gcSpreadSheet1.Sheets(0).SaveCsvAsync(stream, GrapeCity.Xaml.SpreadSheet.Data.TextFileSaveFlags.None)
                End Using
            End If
        Catch ex As Exception
            Dim dialog As Windows.UI.Popups.MessageDialog = New Windows.UI.Popups.MessageDialog(ex.Message, "Error")
            dialog.ShowAsync()
        End Try
    End Sub
   
    Private Async Sub Button_Click_2(sender As Object, e As RoutedEventArgs)
        Try
            Dim filePicker As New Windows.Storage.Pickers.FileOpenPicker()
            filePicker.FileTypeFilter.Add(".csv")
            Dim storageFile As Windows.Storage.StorageFile = Await filePicker.PickSingleFileAsync()
            If storageFile IsNot Nothing Then
                Using stream = Await storageFile.OpenStreamForReadAsync()
                   await gcSpreadSheet1.Sheets(0).OpenCsvAsync(stream, GrapeCity.Xaml.SpreadSheet.Data.TextFileOpenFlags.None)
                End Using
            End If
        Catch ex As Exception
            Dim dialog As Windows.UI.Popups.MessageDialog = New Windows.UI.Popups.MessageDialog(ex.Message, "Error")
            dialog.ShowAsync()
        End Try
    End Sub