private async void saveContext(object sender, RoutedEventArgs e) { if (username.Text == "" || province.Text == "" || area.Text == "") { var i = new MessageDialog("内容不能为空!").ShowAsync(); } var u = (userFace.Source as BitmapImage).UriSource; if (u == null) { u = new Uri("ms-appdata:///temp/temp.png"); } MItem.pic = u; MItem.name = username.Text; MItem.birth = BirthDay.Date.DateTime; MItem.location = province.Text + "_" + area.Text; MItem.random_num = 0; //ViewModel.addMemberItem(userFace.Source, username.Text, BirthDay.Date.DateTime, province.Text + "_" + area.Text, 0); await HttpUtil.AddMember(App.account, new MemberItem(u, username.Text, BirthDay.Date.DateTime, province.Text + "_" + area.Text, 1), false); Frame.Navigate(typeof(Info), MItem); }