我遇到了一个问题,我在App.cs上创建了一个类:
public class Article
{
public string Text { get; set; }
public int Id { get; set; }
public long Date { get; set; }
public string Title { get; set; }
public string Author { get; set; }
public string ImageURL { get; set; }
}
一个公共变量:
public Article ToArticlePage { get; set; }
在NewsPage上,我有同一篇文章:
public class Article
{
[JsonProperty("text")]
public string Text { get; set; }
[JsonProperty("id")]
public int Id { get; set; }
[JsonProperty("date")]
public long Date { get; set; }
[JsonProperty("title")]
public string Title { get; set; }
[JsonProperty("author")]
public string Author { get; set; }
[JsonProperty("imageURL")]
public string ImageURL { get; set; }
}
然后我正在尝试这样做:
在选择更改时,我正在解析文章ID,并在文章列表(NewsList)中找到它。并将其赋予全局变量ToArticlePage。
private void NewsListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
NLBI = (NewsListBoxItem)NewsListBox.SelectedItem;
Predicate <Article> articleFinder = (Article p) => { return p.Id == int.Parse(NLBI.id.Text); };
(App.Current as App).ToArticlePage = NewsList.Result.Articles.Find(articleFinder);
}
错误:
Error 7 Cannot convert type 'WP8Release2.NotAuthorizedPages.HomePage.Article' to 'WP8Release2.Article' C:\Users\4\Documents\Visual Studio 2012\Projects\WP8Release2\WP8Release2\NotAuthorizedPages\HomePage.xaml.cs 348 50 WP8Release2
Error 12 Cannot implicitly convert type 'WP8Release2.NotAuthorizedPages.HomePage.Article' to 'WP8Release2.Article' C:\Users\4\Documents\Visual Studio 2012\Projects\WP8Release2\WP8Release2\NotAuthorizedPages\HomePage.xaml.cs 348 50 WP8Release2
答案 0 :(得分:1)
听起来你需要创建一个alias(在你的cs文件的顶部)
using HPArticle = WP8Release2.NotAuthorizedPages.HomePage.Article;
然后在你的程序中通过
调用此类文章private void NewsListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
NLBI = (NewsListBoxItem)NewsListBox.SelectedItem;
Predicate <HPArticle> articleFinder = (HPArticle p) => { return p.Id == int.Parse(NLBI.id.Text); };
(App.Current as App).ToArticlePage = NewsList.Result.Articles.Find(articleFinder);
}
否则,您需要在任何位置使用完整路径(WP8Release2.NotAuthorizedPages.HomePage.Article)
您遇到的错误是说您的课程中使用了两种不同类型的Article
,并且它不知道您要使用哪种类型