如何解决元数据集合中不存在身份为“Venue_Meets_Source”的成员
我的 MVC 应用程序目前存在一个问题，如果我尝试使用场所保存会议，我的应用程序会崩溃并显示以下错误：元数据集合中不存在标识为“Venue_Meets_Source”的成员。
我怀疑这与 Entity Framework 如何根据我提供的类创建我的数据库有关，但我看不到问题。
尝试研究该问题的注意事项：我没有使用 Fluent，没有触发器会导致问题，因为我没有 EF 创建的触发器。
见面班
public class Meet
{
public int Id { get; set; }
[display(Name ="Meet Name")]
public string MeetName { get; set; }
public string Date { get; set; }
[display(Name = "Pool Length (Metres)")]
public string PoolLength { get; set; }
public int VenueId { get; set; }
[display(Name = "Venue")]
public virtual Venue Venue { get; set; }
public virtual ICollection<Event> Events { get; set; }
}
场地班
public class Venue
{
public int Id { get; set; }
public string VenueName { get; set; }
public string Address { get; set; }
public virtual ICollection<Meet> Meets { get; set; }
}
初始创建迁移
namespace MVCWebAssignment1.Migrations.MigrationContext
{
using System;
using System.Data.Entity.Migrations;
public partial class InitialCreate : DbMigration
{
public override void Up()
{
CreateTable(
"dbo.Events",c => new
{
Id = c.Int(nullable: false,identity: true),AgeRange = c.String(),Gender = c.String(),distance = c.String(),Swimmingstroke = c.String(),MeetId = c.Int(nullable: false),})
.PrimaryKey(t => t.Id)
.ForeignKey("dbo.Meets",t => t.MeetId,cascadeDelete: true)
.Index(t => t.MeetId);
CreateTable(
"dbo.Meets",MeetName = c.String(),Date = c.String(),PoolLength = c.String(),VenueId = c.Int(nullable: false),})
.PrimaryKey(t => t.Id)
.ForeignKey("dbo.Venues",t => t.VenueId,cascadeDelete: true)
.Index(t => t.VenueId);
CreateTable(
"dbo.Venues",VenueName = c.String(),Address = c.String(),})
.PrimaryKey(t => t.Id);
CreateTable(
"dbo.Rounds",EventId = c.Int(nullable: false),})
.PrimaryKey(t => t.Id)
.ForeignKey("dbo.Events",t => t.EventId,cascadeDelete: true)
.Index(t => t.EventId);
CreateTable(
"dbo.Lanes",SwimmerId = c.String(maxLength: 128),FinishTime = c.String(),LaneComment = c.String(),round_Id = c.Int(),})
.PrimaryKey(t => t.Id)
.ForeignKey("dbo.Rounds",t => t.round_Id)
.ForeignKey("dbo.AspNetUsers",t => t.SwimmerId)
.Index(t => t.SwimmerId)
.Index(t => t.round_Id);
CreateTable(
"dbo.AspNetUsers",c => new
{
Id = c.String(nullable: false,maxLength: 128),Name = c.String(),DateOfBirth = c.String(),IsAllowedToSwim = c.Boolean(nullable: false),Email = c.String(maxLength: 256),EmailConfirmed = c.Boolean(nullable: false),PasswordHash = c.String(),SecurityStamp = c.String(),PhoneNumber = c.String(),PhoneNumberConfirmed = c.Boolean(nullable: false),TwoFactorEnabled = c.Boolean(nullable: false),LockoutEndDateUtc = c.DateTime(),LockoutEnabled = c.Boolean(nullable: false),AccessFailedCount = c.Int(nullable: false),UserName = c.String(nullable: false,maxLength: 256),FamilyGroup_FamilyGroupId = c.Int(),})
.PrimaryKey(t => t.Id)
.ForeignKey("dbo.FamilyGroups",t => t.FamilyGroup_FamilyGroupId)
.Index(t => t.UserName,unique: true,name: "UserNameIndex")
.Index(t => t.FamilyGroup_FamilyGroupId);
CreateTable(
"dbo.AspNetUserClaims",UserId = c.String(nullable: false,ClaimType = c.String(),ClaimValue = c.String(),})
.PrimaryKey(t => t.Id)
.ForeignKey("dbo.AspNetUsers",t => t.UserId,cascadeDelete: true)
.Index(t => t.UserId);
CreateTable(
"dbo.FamilyGroups",c => new
{
FamilyGroupId = c.Int(nullable: false,GroupName = c.String(),})
.PrimaryKey(t => t.FamilyGroupId);
CreateTable(
"dbo.AspNetUserLogins",c => new
{
LoginProvider = c.String(nullable: false,ProviderKey = c.String(nullable: false,})
.PrimaryKey(t => new { t.LoginProvider,t.ProviderKey,t.UserId })
.ForeignKey("dbo.AspNetUsers",cascadeDelete: true)
.Index(t => t.UserId);
CreateTable(
"dbo.AspNetUserRoles",c => new
{
UserId = c.String(nullable: false,RoleId = c.String(nullable: false,})
.PrimaryKey(t => new { t.UserId,t.RoleId })
.ForeignKey("dbo.AspNetUsers",cascadeDelete: true)
.ForeignKey("dbo.AspNetRoles",t => t.RoleId,cascadeDelete: true)
.Index(t => t.UserId)
.Index(t => t.RoleId);
CreateTable(
"dbo.AspNetRoles",Name = c.String(nullable: false,})
.PrimaryKey(t => t.Id)
.Index(t => t.Name,name: "RoleNameIndex");
}
public override void Down()
{
DropForeignKey("dbo.AspNetUserRoles","RoleId","dbo.AspNetRoles");
DropForeignKey("dbo.Lanes","SwimmerId","dbo.AspNetUsers");
DropForeignKey("dbo.AspNetUserRoles","UserId","dbo.AspNetUsers");
DropForeignKey("dbo.AspNetUserLogins","dbo.AspNetUsers");
DropForeignKey("dbo.AspNetUsers","FamilyGroup_FamilyGroupId","dbo.FamilyGroups");
DropForeignKey("dbo.AspNetUserClaims","dbo.AspNetUsers");
DropForeignKey("dbo.Lanes","round_Id","dbo.Rounds");
DropForeignKey("dbo.Rounds","EventId","dbo.Events");
DropForeignKey("dbo.Meets","VenueId","dbo.Venues");
DropForeignKey("dbo.Events","MeetId","dbo.Meets");
DropIndex("dbo.AspNetRoles","RoleNameIndex");
DropIndex("dbo.AspNetUserRoles",new[] { "RoleId" });
DropIndex("dbo.AspNetUserRoles",new[] { "UserId" });
DropIndex("dbo.AspNetUserLogins",new[] { "UserId" });
DropIndex("dbo.AspNetUserClaims",new[] { "UserId" });
DropIndex("dbo.AspNetUsers",new[] { "FamilyGroup_FamilyGroupId" });
DropIndex("dbo.AspNetUsers","UserNameIndex");
DropIndex("dbo.Lanes",new[] { "round_Id" });
DropIndex("dbo.Lanes",new[] { "SwimmerId" });
DropIndex("dbo.Rounds",new[] { "EventId" });
DropIndex("dbo.Meets",new[] { "VenueId" });
DropIndex("dbo.Events",new[] { "MeetId" });
DropTable("dbo.AspNetRoles");
DropTable("dbo.AspNetUserRoles");
DropTable("dbo.AspNetUserLogins");
DropTable("dbo.FamilyGroups");
DropTable("dbo.AspNetUserClaims");
DropTable("dbo.AspNetUsers");
DropTable("dbo.Lanes");
DropTable("dbo.Rounds");
DropTable("dbo.Venues");
DropTable("dbo.Meets");
DropTable("dbo.Events");
}
}
}
感谢指导！
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