private async void Button_Click(object sender, RoutedEventArgs e) { FileGestion file = new FileGestion(); if (nameInput.Text == "") { nameInput.BorderBrush = new SolidColorBrush(Windows.UI.Colors.Red); return; } string tmp = await file.ReadOnFileAsync("NameProject"); if (tmp.ToString().Contains(nameInput.Text)) { nameInput.BorderBrush = new SolidColorBrush(Windows.UI.Colors.Red); nameInput.Text = "Projet déja existant !"; return; } file.CreateFileProject(nameInput.Text); file.WriteOnFile("NameProject", nameInput.Text); DateTime thisDay = DateTime.Today; string name = "Name:" + nameInput.Text; string creation = "Creation:" + thisDay.ToString("g"); string modification = "Modification:" + thisDay.ToString("g"); string description = "Description:" + descriptionInput.Text; string final = name + "\n" + description + "\n" + creation + "\n" + modification; file.WriteOnFile(nameInput.Text, final); this.Frame.Navigate(typeof(MainPage)); }