问实体框架在添加没有ID的数据时抛出错误

EN

       public class TweetContext : DbContext
    {
        public DbSet<Status> Tweets { get; set; }
    }

        using (var vontex = new TweetContext())
        {
            vontex.Tweets.AddRange(container);
            vontex.SaveChanges();
        }

using System;
using System.Collections.Generic;
using System.Xml.Serialization;
using LitJson;

namespace LinqToTwitter
{
 [XmlType(Namespace = "LinqToTwitter")]
 public class Status
 {
    public Status();
    public Status(JsonData status);

    public Annotation Annotation { get; set; }
    public List<Contributor> Contributors { get; set; }
    public Coordinate Coordinates { get; set; }
    public int Count { get; set; }
    public DateTime CreatedAt { get; set; }
    public ulong CurrentUserRetweet { get; set; }
    public long Cursor { get; set; }
    public Cursors CursorMovement { get; set; }
    public EmbeddedStatus EmbeddedStatus { get; set; }
    public Entities Entities { get; set; }
    public bool ExcludeReplies { get; set; }
    public Entities ExtendedEntities { get; set; }
    public int? FavoriteCount { get; set; }
    public bool Favorited { get; set; }
    public FilterLevel FilterLevel { get; set; }
    public ulong ID { get; set; }
    public bool IncludeContributorDetails { get; set; }
    public bool IncludeEntities { get; set; }
    public bool IncludeMyRetweet { get; set; }
    public bool IncludeRetweets { get; set; }
    public bool IncludeUserEntities { get; set; }
    public string InReplyToScreenName { get; set; }
    public ulong InReplyToStatusID { get; set; }
    public ulong InReplyToUserID { get; set; }
    public string Lang { get; set; }
    public bool Map { get; set; }
    public ulong MaxID { get; set; }
    public StatusMetaData MetaData { get; set; }
    public EmbeddedStatusAlignment OEmbedAlign { get; set; }
    public bool OEmbedHideMedia { get; set; }
    public bool OEmbedHideThread { get; set; }
    public string OEmbedLanguage { get; set; }
    public int OEmbedMaxWidth { get; set; }
    public bool OEmbedOmitScript { get; set; }
    public string OEmbedRelated { get; set; }
    public string OEmbedUrl { get; set; }
    public Place Place { get; set; }
    public bool PossiblySensitive { get; set; }
    public Status QuotedStatus { get; set; }
    public ulong QuotedStatusID { get; set; }
    public int RetweetCount { get; set; }
    public bool Retweeted { get; set; }
    public Status RetweetedStatus { get; set; }
    [XmlIgnore]
    public Dictionary<string, string> Scopes { get; set; }
    public string ScreenName { get; set; }
    public ulong SinceID { get; set; }
    public string Source { get; set; }
    public ulong StatusID { get; set; }
    public string Text { get; set; }
    public bool TrimUser { get; set; }
    public bool Truncated { get; set; }
    public string TweetIDs { get; set; }
    [XmlIgnore]
    public StatusType Type { get; set; }
    public User User { get; set; }
    public ulong UserID { get; set; }
    public List<ulong> Users { get; set; }
    public bool WithheldCopyright { get; set; }
    public List<string> WithheldInCountries { get; set; }
    public string WithheldScope { get; set; }
 }
}