/// <summary>
/// 获取文章评论。
/// </summary>
/// <param name="articleId">文章 Id。</param>
/// <param name="pageIndex">第几页，从 1 开始。</param>
/// <param name="pageSize">每页条数。</param>
/// <returns>评论列表。</returns>
/// <exception cref="ArgumentOutOfRangeException">文章 Id 错误。</exception>
/// <exception cref="ArgumentOutOfRangeException">评论页数错误。</exception>
/// <exception cref="ArgumentOutOfRangeException">评论条数错误。</exception>
public static async Task <IEnumerable <ArticleComment> > CommentAsync(int articleId, int pageIndex, int pageSize)
{
if (articleId < 1)
{
throw new ArgumentOutOfRangeException(nameof(articleId));
}
if (pageIndex < 1)
{
throw new ArgumentOutOfRangeException(nameof(pageIndex));
}
if (pageSize < 1)
{
throw new ArgumentOutOfRangeException(nameof(pageSize));
}
var url = string.Format(CultureInfo.InvariantCulture, CommentUrlTemplate, articleId, pageIndex, pageSize);
url = url.WithCache();
var uri = new Uri(url, UriKind.Absolute);
var request = WebRequest.Create(uri);
using (var response = await request.GetResponseAsync())
{
var document = XDocument.Load(response.GetResponseStream());
var comments = new List <ArticleComment>(CommentHelper.Deserialize <ArticleComment>(document));
for (var i = 0; i < comments.Count; i++)
{
comments[i].ArticleId = articleId;
}
return(comments);
}
}
/// <summary>
/// 获取新闻评论。
/// </summary>
/// <param name="newsId">新闻 Id。</param>
/// <param name="pageIndex">第几页，从 1 开始。</param>
/// <param name="pageSize">每页条数。</param>
/// <returns>评论。</returns>
/// <exception cref="ArgumentOutOfRangeException">新闻 Id 错误。</exception>
/// <exception cref="ArgumentOutOfRangeException">评论页数错误。</exception>
/// <exception cref="ArgumentOutOfRangeException">评论条数错误。</exception>
public static async Task <IEnumerable <NewsComment> > CommentAsync(int newsId, int pageIndex, int pageSize)
{
if (newsId < MinNewsId)
{
throw new ArgumentOutOfRangeException(nameof(newsId));
}
if (pageIndex < 1)
{
throw new ArgumentOutOfRangeException(nameof(pageIndex));
}
if (pageSize < 1)
{
throw new ArgumentOutOfRangeException(nameof(pageSize));
}
try
{
var forCheck = checked (pageIndex * pageSize);
}
catch (OverflowException exception)
{
throw new ArgumentOutOfRangeException("超出范围。", exception);
}
var url = string.Format(CultureInfo.InvariantCulture, CommentUrlTemplate, newsId, pageIndex, pageSize);
url = url.WithCache();
var uri = new Uri(url, UriKind.Absolute);
var request = WebRequest.Create(uri);
using (var response = await request.GetResponseAsync())
{
var document = XDocument.Load(response.GetResponseStream());
var comments = new List <NewsComment>(CommentHelper.Deserialize <NewsComment>(document));
for (var i = 0; i < comments.Count; i++)
{
comments[i].NewsId = newsId;
}
return(comments);
}
}
