过滤此Linq查询

本文关键字：查询 Linq 过滤 | 更新日期: 2023-09-27 18:04:46

我想使用这个查询:

var queryData = from va in xdoc.Descendants("language")
                select new
                {
                    StringID = va.Parent.Parent.Attribute("id").Value,
                    Language = va.Attribute("name").Value,
                    LanguageData = va.Element("value").Value,
                };
var organizedData = from x in queryData
                    group x by x.StringID into xg
                    select new
                    {
                        StringID = xg.Key,
                        English = xg.SingleOrDefault(x => x.Language == "ENGLISH_US").LanguageData,
                        Custom = xg.SingleOrDefault(x => x.Language == languageBox.SelectedItem.ToString()).LanguageData,
                    };
mainView.DataSource = organizedData.ToList();
mainView.Refresh();

除了作为Custom匿名类型检索内容的附加条件，其值必须等于"*"。

为什么我不明白?我想我对匿名类型或=>操作符了解得不够。

过滤此Linq查询

这是你想要的吗?

mainView.DataSource = organizedData.Where(x => x.Custom == "*").ToList();

我想这就是你要找的。我把这个值放在一个临时变量中，这样就不需要计算两次了。

       var organizedData = from x in queryData
                            group x by x.StringID into xg
                            let temp = xg.SingleOrDefault(x => x.Language == languageBox.SelectedItem.ToString()).LanguageData
                            where temp == "*"
                            select new
                            {
                                StringID = xg.Key,
                                English = xg.SingleOrDefault(x => x.Language == "ENGLISH_US").LanguageData,
                                Custom = temp,
                            };
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