如何在没有主键的数据库表中添加实体键？

Question

我正在尝试使用Entity Framework将数据插入到没有主键的数据库表中。

发生错误

  

您的SQL语法有错误;检查与您的MySQL服务器版本对应的手册，以便在＆＃39;（SELECT \ n collection.CustomerID，collection.AmountRecevied，\ n＆＃39;第1行）附近使用正确的语法

我使用fiddler发布了数据，

{"CustomerID":"12122","AmountRecevied":"2000","Date_Time":"","longitude":"17.3660° N","AgentID":"15","Money_Receipt_No":"56654","Payment_Mode":"cash","Money_Receipt_Photo":"","latitude":"78.4760° E"} 

代码：

try
{
    var vvv = cs.collections.Select(x => x.CustomerID).ToList();
    cs.collections.Add(collection);
    cs.SaveChanges();
}
catch
{
    return false;
}
return true;

[HttpPost]
public HttpResponseMessage PostUser(collection Collection)
{
        if (Collection == null)
            return Request.CreateResponse(HttpStatusCode.BadRequest, "not created");

        if (obj.PostUser(Collection))
        {
            return Request.CreateResponse(HttpStatusCode.Created, TheModelFactory.create(Collection));
        }
        else
            return Request.CreateResponse(HttpStatusCode.BadRequest, "Could not save to the database");
}

属性

public partial class collection
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.None)]
    public string CustomerID { get; set; }
    public decimal AmountRecevied { get; set; }
    public Nullable<System.DateTime> Date_Time { get; set; }
    public string longitude { get; set; }
    public Nullable<int> AgentID { get; set; }
    public Nullable<int> Money_Receipt_No { get; set; }
    public string Payment_Mode { get; set; }
    public byte[] Money_Receipt_Photo { get; set; }
    public string latitude { get; set; }
}