由网友(ㄡ冇誰會吢疼√)分享简介:我有两个型号,一个用户,并按以下团队:I got two models, a User and a Team as below:[BsonRepresentation(BsonType.ObjectId)]public ObjectId _id { get; set; }[Display(Name = "Passwo...
我有两个型号,一个用户,并按以下团队:
I got two models, a User and a Team as below:
[BsonRepresentation(BsonType.ObjectId)]
public ObjectId _id { get; set; }
[Display(Name = "Password:")]
public string Password { get; set; }
[Display(Name = "Confirm:")]
public string ConfirmPassword { get; set; }
[Display(Name = "Email:")]
public string Email { get; set; }
[Display(Name = "Username:")]
public string UserName { get; set; }
[Display(Name = "Firtname:")]
public string Firstname { get; set; }
[Display(Name = "Lastname:")]
public string Lastname { get; set; }
[Display(Name = "Country:")]
public string Country { get; set; }
[Display(Name = "City:")]
public string City { get; set; }
[Display(Name = "Birthdate:")]
public int Birthdate { get; set; }
public List<Team> Teams { get; set; }
[BsonRepresentation(BsonType.ObjectId)]
public ObjectId TeamID { get; set; }
public string TeamName { get; set; }
public string UserName { get; set; }
public int LeagueID { get; set; }
public List<Player> Player { get; set; }
所以,我创建了一个用户,但现在我想团队添加到我的用户。 这是code我使用:
So I've created a user but now I want to add teams to my user. This is the code I'm using:
var databaseClient = new MongoClient(Settings.Default.FantasySportsConnectionString);
var server = databaseClient.GetServer();
var database = server.GetDatabase("Users");
var collection = database.GetCollection<User>("users");
var user = collection.AsQueryable().First(o => o._id == Session["ID"]);
user.Teams.Add(new Team { TeamID = new ObjectId(), TeamName = "Some Team" });
但是,当我这样做,我得到这些错误:
But when I do this I get these errors:
1 实例的说法:不能将'MongoDB.Driver.MongoCollection&LT; SportsFantasy_2._0.Models.User&GT;以System.Collections.IEnumerable
2:MongoDB.Driver.MongoCollection&LT; SportsFantasy_2._0.Models.User&GT;不包含定义AsQueryable已'和最佳扩展方法重载'System.Linq.Queryable.AsQueryable(System.Collections.IEnumerable)'有一些无效的参数
推荐答案
您缺少一个命名空间, MongoDB.Driver.Linq
,简单的添加,在顶部:
You are missing a namespace, MongoDB.Driver.Linq
, simply add that at the top:
using MongoDB.Driver.Linq;
这是具体的方法是:
LinqExtensionMethods
{
public static IQueryable<T> AsQueryable<T>(this MongoCollection<T> collection);
//...
}
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