我已经安装了带有VS 2015更新1的RC1。
每当我尝试添加一个新迁移时,同一组外键就会在Up方法中被重新创建。这意味着它们被删除然后直接重新添加。
例如,当我添加一个迁移而不改变任何模型时,会生成以下内容(显然Down方法中也会生成类似的内容):
protected override void Up(MigrationBuilder migrationBuilder)
{
migrationBuilder.DropForeignKey(name: "FK_IdentityRoleClaim<string>_IdentityRole_RoleId", table: "AspNetRoleClaims");
migrationBuilder.DropForeignKey(name: "FK_IdentityUserClaim<string>_ApplicationUser_UserId", table: "AspNetUserClaims");
migrationBuilder.DropForeignKey(name: "FK_IdentityUserLogin<string>_ApplicationUser_UserId", table: "AspNetUserLogins");
migrationBuilder.DropForeignKey(name: "FK_IdentityUserRole<string>_IdentityRole_RoleId", table: "AspNetUserRoles");
migrationBuilder.DropForeignKey(name: "FK_IdentityUserRole<string>_ApplicationUser_UserId", table: "AspNetUserRoles");
migrationBuilder.AlterColumn<string>(
name: "UserId",
table: "AspNetUserLogins",
nullable: false);
migrationBuilder.AlterColumn<string>(
name: "UserId",
table: "AspNetUserClaims",
nullable: false);
migrationBuilder.AlterColumn<string>(
name: "RoleId",
table: "AspNetRoleClaims",
nullable: false);
migrationBuilder.AddForeignKey(
name: "FK_IdentityRoleClaim<string>_IdentityRole_RoleId",
table: "AspNetRoleClaims",
column: "RoleId",
principalTable: "AspNetRoles",
principalColumn: "Id",
onDelete: ReferentialAction.Cascade);
migrationBuilder.AddForeignKey(
name: "FK_IdentityUserClaim<string>_ApplicationUser_UserId",
table: "AspNetUserClaims",
column: "UserId",
principalTable: "AspNetUsers",
principalColumn: "Id",
onDelete: ReferentialAction.Cascade);
migrationBuilder.AddForeignKey(
name: "FK_IdentityUserLogin<string>_ApplicationUser_UserId",
table: "AspNetUserLogins",
column: "UserId",
principalTable: "AspNetUsers",
principalColumn: "Id",
onDelete: ReferentialAction.Cascade);
migrationBuilder.AddForeignKey(
name: "FK_IdentityUserRole<string>_IdentityRole_RoleId",
table: "AspNetUserRoles",
column: "RoleId",
principalTable: "AspNetRoles",
principalColumn: "Id",
onDelete: ReferentialAction.Cascade);
migrationBuilder.AddForeignKey(
name: "FK_IdentityUserRole<string>_ApplicationUser_UserId",
table: "AspNetUserRoles",
column: "UserId",
principalTable: "AspNetUsers",
principalColumn: "Id",
onDelete: ReferentialAction.Cascade);
}
这是完全无用的,而且看起来在我的情况下总是发生。我在aspnet5应用程序和普通控制台应用程序中都尝试过这个。