private async void OnBackup_Clicked(object sender, EventArgs e)
        {
            try
            {
                string filePath = await dbManage.ExportDbData();

                await Share.RequestAsync(new ShareFileRequest
                {
                    Title = "Export IO Manager data",
                    File  = new ShareFile(filePath),
                });
            }
            catch (Exception ex)
            {
                await DisplayAlert("Error", ex.Message, "OK");
            }
        }