我有以下實體類：public partial class ProjectUser{        public int Id { get; set; }        public int ProjectId { get; set; }        public int UserId { get; set; }        public virtual Project Project { get; set; }        public virtual Users User { get; set; }}當我執(zhí)行以下操作時：myDbContext.ProjectUser.ToList()我收到此錯誤：System.Data.SqlClient.SqlException (0x80131904): 列名稱“ProjectUser”無效我dbcontext的具有以下屬性：public virtual DbSet<ProjectUser> ProjectUser { get; set; }表格腳本如下。CREATE TABLE [dbo].[ProjectUser](    [Id] [int] IDENTITY(1,1) NOT NULL,    [ProjectId] [int] NOT NULL,    [UserId] [int] NOT NULL,    CONSTRAINT [PK_ProjectUser]         PRIMARY KEY CLUSTERED ([Id] ASC)                    WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF,                           IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON,                           ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]) ON [PRIMARY]GO怎么了？已使用腳手架生成類。