Question

每当我尝试在我的网站上打开“用户”标签时出现此错误：“无法将文件”{0}“附加为数据库”{1}“，因此我使用

修复了此问题

sqllocaldb.exe stop v11.0

sqllocaldb.exe delete v11.0

在开发人员命令提示符中。

现在我可以在我的网站上打开我的用户标签，但由于我的包含用户的数据库为空，我的迁移功能无效

我试过enable-migrations -contexttypename IssueContext和update-database 但是会显示图像中的错误:(在新标签中打开以查看）

更新新错误：在新标签页中打开以查看！

Configuration.cs（种子方法）

namespace RecreationalServicesTicketingSystem.Migrations
{
    using System;
    using System.Collections.Generic;
    using System.Data.Entity.Migrations;
    using System.Linq;
    using RecreationalServicesTicketingSystem.Models;

    internal sealed class Configuration : DbMigrationsConfiguration<RecreationalServicesTicketingSystem.DAL.IssueContext>
    {
        public Configuration()
        {
            AutomaticMigrationsEnabled = false;
        }

        protected override void Seed(RecreationalServicesTicketingSystem.DAL.IssueContext context)
        {
            var users = new List<User>
            {
                new User { FirstMidName = "Jason",   LastName = "Wan", 
                    EnrollmentDate = DateTime.Parse("2016-02-18") },
                new User { FirstMidName = "Andy", LastName = "Domagas",    
                    EnrollmentDate = DateTime.Parse("2016-02-18") },
                new User { FirstMidName = "Denis",   LastName = "Djohar",     
                    EnrollmentDate = DateTime.Parse("2016-02-18") },
                new User { FirstMidName = "Christine",   LastName = "West",     
                    EnrollmentDate = DateTime.Parse("2016-02-18") },

            };


            users.ForEach(s => context.Users.AddOrUpdate(p => p.LastName, s));
            context.SaveChanges();

            var categories = new List<Category>
            {
                new Category {CategoryID = 0001, Title = "Desktop"},
                new Category {CategoryID = 0002, Title = "Mobile"},
                new Category {CategoryID = 0003, Title = "Menzits"},
                new Category {CategoryID = 0004, Title = "XMPRO"},
                new Category {CategoryID = 0005, Title = "Con-X"},
                new Category {CategoryID = 0006, Title = "Promapp"},
                new Category {CategoryID = 0007, Title = "QGIS"},
            };
            categories.ForEach(s => context.Categories.AddOrUpdate(p => p.Title, s));
            context.SaveChanges();

            var tickets = new List<Ticket>
            {
                new Ticket { 
                    UserID = users.Single(s => s.LastName == "Wan").UserID, 
                    CategoryID = categories.Single(c => c.Title == "Con-X" ).CategoryID, 
                    Issue = ("Test Error 1"),
                    Priority = Priority.High 
                },
                new Ticket { 
                    UserID = users.Single(s => s.LastName == "Wan").UserID, 
                    CategoryID = categories.Single(c => c.Title == "Desktop" ).CategoryID, 
                    Issue = ("Test Error 2"),
                    Priority = Priority.Med
                },
            };

            foreach (Ticket e in tickets)
            {
                var ticketInDataBase = context.Tickets.Where(
                    s =>
                        s.User.UserID == e.UserID &&
                        s.Category.CategoryID == e.CategoryID).SingleOrDefault();
                if (ticketInDataBase == null)
                {
                    context.Tickets.Add(e);
                }
            }
            context.SaveChanges();


            var departments = new List<Department>
            {
                new Department { DepartmentID = 1, Name = "IT", Users = new List<User>()},
                new Department { DepartmentID = 2, Name = "Admin", Users = new List<User>() },
                new Department { DepartmentID = 3, Name = "Human Resources", Users = new List<User>()},
                new Department { DepartmentID = 4, Name = "Mechanics" , Users = new List<User>()},
                new Department { DepartmentID = 5, Name = "Directors" , Users = new List<User>()},
                new Department { DepartmentID = 6, Name = "Operations", Users = new List<User>()}


            };
            departments.ForEach(s => context.Departments.AddOrUpdate(p => p.Name, s));
            context.SaveChanges();


            var administrator = new List<Administrator>
            {
                new Administrator {AdminID = 1, AdminRole = "Administrator LVL1", User = users.Single ( s => s.UserID == 1),
                Tickets = new List<Ticket>() },
                new Administrator {AdminID = 2, AdminRole = "Administrator LVL2", User = users.Single ( s => s.UserID == 2),
                Tickets = new List<Ticket>() },
                new Administrator {AdminID = 3, AdminRole = "Administrator LVL3", User = users.Single ( s => s.UserID == 3),
                Tickets = new List<Ticket>() }



            };
            administrator.ForEach(s => context.Administrators.AddOrUpdate(p => p.AdminID, s));
            context.SaveChanges();
        }
    }
}

视图\用户\ Create.cshtml

@model RecreationalServicesTicketingSystem.Models.User

@{
    ViewBag.Title = "Create";
}

<h2>Create</h2>

@using (Html.BeginForm()) {
    @Html.AntiForgeryToken()
    @Html.ValidationSummary(true)

    <fieldset>
        <legend>User</legend>

        <div class="editor-label">
            @Html.LabelFor(model => model.LastName)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.LastName)
            @Html.ValidationMessageFor(model => model.LastName)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.FirstMidName)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.FirstMidName)
            @Html.ValidationMessageFor(model => model.FirstMidName)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.EnrollmentDate)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.EnrollmentDate)
            @Html.ValidationMessageFor(model => model.EnrollmentDate)
        </div>

        <p> <input type="submit" value="Create" />
   </p>

    </fieldset>
}

<div>
    @Html.ActionLink("Back to List", "Index")
</div>

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

User.cs

public class User
    {

        public int UserID { get; set; }
        [StringLength(50, MinimumLength = 1)]
        public string LastName { get; set; }
        [StringLength(50, MinimumLength = 1, ErrorMessage = "First name cannot be longer than 50 characters.")]

        [Column("FirstName")]
        public string FirstMidName { get; set; }

        [DataType(DataType.Date)]
        [DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}", ApplyFormatInEditMode = true)]
        public DateTime EnrollmentDate { get; set; }

        public string FullName
        {
            get { return LastName + ", " + FirstMidName; }
        }
        public int AdministratorID { get; set; }
        [ForeignKey("AdministratorID")]
        public virtual Administrator Administrator { get; set; }

        public int DepartmentID { get; set; }
        [ForeignKey("DepartmentID")]
        public virtual Department Department { get; set; }


        public int DepotID { get; set; }
        [ForeignKey("DepotID")]
        public virtual Depot Depot { get; set; }

        public int TicketID { get; set; }
        //Setting up relationships A use can apply for any number of tickets, so Tickets is defined as a collection of Ticket entities.
        public virtual ICollection<Ticket> Users { get; set; }

    }

EF迁移的MVC4无法正常工作！数据库为空

0 个答案: