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您好,我正在尋找一些幫助,如何將行添加到現有的LINQ對象。在下面的控制器方法中,我有兩個結果集,我正在循環網站,並且希望將記錄添加到Sites對象中每個記錄的「結果」對象。添加記錄到一個LINQ對象(concat)從另一個值取得值
我試過CONCAT等,但沒有得到任何地方,剛需的小例子來協助,提前千恩萬謝,J
public IQueryable<UsersToSite> FindAllUsersToSites(int userId,SystemType obj)
{
var results = (from usersToSite in this._db.UsersToSites
where usersToSite.UserId == userId &&
usersToSite.SystemTypeId == obj
orderby usersToSite.Site.SiteDescription
select usersToSite);
// Now for each remaining Site append a record thats not physically in the database. From the view the user will be able to click these records to ADD new
// I'll then build in a search
var sites = (from site in this._db.Sites
where !(from o in _db.UsersToSites where (o.UserId == userId && o.SystemTypeId == obj) select o.SiteId).Contains(site.SiteId)
orderby site.SiteDescription
select site);
foreach (var site in sites)
{
// HERE I want to create the new ROW in results object
//results = new[results] { new { UsersToSiteId = null, AccessTypeId = null } }.Concat(sites);
//SiteId=site.SiteId,
//UsersToSiteId = 0,
//AccessTypeId = 0,
//UserId = userId
}
return results;
}
這似乎是工作,但現在的結果對象是TOLIST,我試圖返回一個IQueryable對象。你知道我怎麼可以將列表對象的結果轉換回ADD –
John
2011-05-21 09:13:28
@John - 你可以做'return sites.AsQueryable()',但如果你真的想這樣做,你需要檢查你的代碼。 – 2011-05-21 09:15:28