Create Excel files in Xamarin

GemBox.Spreadsheet is a standalone .NET component with cross-platform support. You can use it on non-Windows platforms like Xamarin and Mono, enabling you to run it on Android and iOS mobile devices.

With GemBox.Spreadsheet you can process your workbooks (read, write, convert, and edit Excel files) from the native mobile apps.

The following example shows how you can create an Excel file in Xamarin.Forms mobile application using GemBox.Spreadsheet.

XAML
C#
VB.NET

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:d="http://xamarin.com/schemas/2014/forms/design"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             mc:Ignorable="d"
             x:Class="MainPage">

    <StackLayout Padding="50" 
                 Spacing="20" >

        <Label Text="GemBox.Spreadsheet Example"
               HorizontalOptions="Center"
               FontSize="Large"
               Margin="0,0,0,30" />

        <TableView x:Name="table"
                   Intent="Data" >
            <TableRoot>
                <TableSection>
                    <EntryCell Label="A1"
                               Text="Joe Doe" />

                    <EntryCell Label="A2"
                               Text="Fred Nurk" />

                    <EntryCell Label="A3"
                               Text="Hans Meier" />

                    <EntryCell Label="A4"
                               Text="Ivan Horvat" />

                    <EntryCell Label="A5"
                               Text="Jean Dupont" />
                </TableSection>
            </TableRoot>
        </TableView>

        <ActivityIndicator x:Name="activity" />

        <Button x:Name="button"
                Text="Create workbook"
                Clicked="Button_Clicked"/>

    </StackLayout>
</ContentPage>

using System;
using System.ComponentModel;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using Xamarin.Essentials;
using Xamarin.Forms;
using GemBox.Spreadsheet;

public partial class MainPage : ContentPage
{
    public MainPage()
    {
        SpreadsheetInfo.SetLicense("FREE-LIMITED-KEY");
        InitializeComponent();
    }

    private string CreateWorkbook()
    {
        var workbook = new ExcelFile();
        var worksheet = workbook.Worksheets.Add("Sheet1");

        foreach (var cell in table.Root[0].Cast<EntryCell>())
            worksheet.Cells[cell.Label].Value = cell.Text;

        var filePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "Example.xlsx");

        workbook.Save(filePath);

        return filePath;
    }

    private async void Button_Clicked(object sender, EventArgs e)
    {
        button.IsEnabled = false;
        activity.IsRunning = true;

        try
        {
            var filePath = await Task.Run(() => CreateWorkbook());
            await Launcher.OpenAsync(new OpenFileRequest(Path.GetFileName(filePath), new ReadOnlyFile(filePath)));
        }
        catch (Exception ex)
        {
            await DisplayAlert("Error", ex.Message, "Close");
        }

        activity.IsRunning = false;
        button.IsEnabled = true;
    }
}

Imports System
Imports System.Linq
Imports System.Threading.Tasks
Imports Xamarin.Essentials
Imports Xamarin.Forms
Imports GemBox.Spreadsheet

Partial Public Class MainPage
    Inherits ContentPage

    Public Sub New()
        SpreadsheetInfo.SetLicense("FREE-LIMITED-KEY")
        InitializeComponent()
    End Sub

    Private Function CreateWorkbook() As String
        Dim workbook = New ExcelFile()
        Dim worksheet = workbook.Worksheets.Add("Sheet1")

        For Each cell In table.Root(0).Cast(Of EntryCell)()
            worksheet.Cells(cell.Label).Value = cell.Text
        Next

        Dim filePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "Example.xlsx")

        workbook.Save(filePath)

        Return filePath
    End Function

    Private Async Sub Button_Clicked(sender As Object, e As EventArgs)
        button.IsEnabled = False
        activity.IsRunning = True

        Try
            Dim filePath = Await Task.Run(Function() CreateWorkbook())
            Await Launcher.OpenAsync(New OpenFileRequest(Path.GetFileName(filePath), New ReadOnlyFile(filePath)))
        Catch ex As Exception
            Await DisplayAlert("Error", ex.Message, "Close")
        End Try

        activity.IsRunning = False
        button.IsEnabled = True
    End Sub
End Class

Excel file generator on a native Android mobile app with Xamarin.Forms — Screenshot of Xamarin Android app that creates an Excel file

Using full functionality of GemBox.Spreadsheet in Xamarin application requires adjustments explained in detail on Supported Platforms help page.

Next steps

GemBox.Spreadsheet is a .NET component that enables you to read, write, edit, convert, and print spreadsheet files from your .NET applications using one simple API.

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Create Excel files in Xamarin

See also

Next steps