public async Task LoadMore()
{
if (this.IsRefreshing)
{
return;
}
this.IsRefreshing = true;
IEnumerable<Article> articles = null;
bool showFailMessage = false;
try
{
articles = await this.echoJsClient.GetLatestNews(this.Articles.Count);
}
catch (HttpRequestException)
{
showFailMessage = true;
}
catch (UnsupportedMediaTypeException)
{
showFailMessage = true;
}
this.IsRefreshing = false;
if (showFailMessage)
{
await Task.Delay(50);
var showMessageBoxResult = new ShowMessageBoxResult(
"There was an error trying to get the top articles.",
AppResources.NetworkErrorMessageBoxCaption);
await showMessageBoxResult.ExecuteAsync();
}
else
{
foreach (var article in articles)
{
this.Articles.Add(article);
}
}
}
private async Task GetComments()
{
this.IsBusy = true;
IEnumerable<Comment> comments = null;
bool showFailMessage = false;
try
{
comments = await this.echoJsClient.GetCommentsForArticle(this.ArticleId);
comments = this.FlattenComments(comments);
}
catch (HttpRequestException)
{
showFailMessage = true;
}
catch (UnsupportedMediaTypeException)
{
showFailMessage = true;
}
this.IsBusy = false;
if (showFailMessage)
{
await Task.Delay(50);
var showMessageBoxResult = new ShowMessageBoxResult(
"There was an error trying to get the comments.",
AppResources.NetworkErrorMessageBoxCaption);
await showMessageBoxResult.ExecuteAsync();
}
else
{
this.Comments.AddRange(comments);
}
this.NotifyOfPropertyChange(() => this.ShowNoCommentsMessage);
this.NotifyOfPropertyChange(() => this.ShowComments);
}
public async Task RefreshArticles()
{
if (this.IsRefreshing)
{
return;
}
this.ShowFailureMessage = false;
this.Articles.Clear();
this.IsRefreshing = true;
IEnumerable<Article> articles = null;
bool showFailMessage = false;
try
{
articles = await this.echoJsClient.GetTopNews();
}
catch (HttpRequestException)
{
showFailMessage = true;
}
catch (UnsupportedMediaTypeException)
{
showFailMessage = true;
}
this.IsRefreshing = false;
if (showFailMessage)
{
await Task.Delay(50);
var showMessageBoxResult = new ShowMessageBoxResult(
"There was an error trying to get the top articles.",
AppResources.NetworkErrorMessageBoxCaption);
await showMessageBoxResult.ExecuteAsync();
this.ShowFailureMessage = true;
}
else
{
this.Articles.AddRange(articles.ToList());
}
}