public async void DeleteUserButton_Click(SteamUser user) { var result = await MessageBox.ShowAsync(AppResources.UserChange_DeleteUserTip, button : MessageBox.Button.OKCancel); if (result == MessageBox.Result.OK) { result = await MessageBox.ShowAsync(AppResources.UserChange_DeleteUserDataTip, button : MessageBox.Button.OKCancel); if (result == MessageBox.Result.OK) { steamService.DeleteLocalUserData(user, true); } else { steamService.DeleteLocalUserData(user, false); } _SteamUsersSourceList.Remove(user); } }