MVC5 数据库中已经有一个名为 'AspNetUsers' 的对象
MVC5 There is already an object named 'AspNetUsers' in the database
我正在尝试克隆具有身份角色的 MVC5 并从此 tutorial and the project is here 进行授权。
我试图在我的程序包管理器控制台中使用 update-database，但它一直说我有
There is already an object named 'AspNetUsers' in the database.
但是如果你看图片，我没有包含这些表的数据库。
WebConfig 连接字符串
<add name="DefaultConnection" connectionString="Data Source=.\SQLEXPRESS;Integrated Security=True;Connect Timeout=15;Encrypt=False;TrustServerCertificate=False;ApplicationIntent=ReadWrite;MultiSubnetFailover=False" providerName="System.Data.SqlClient" />
PM> Update-Database
Specify the '-Verbose' flag to view the SQL statements being applied to the target database.
Applying explicit migrations: [201603280555304_InitialCreate].
Applying explicit migration: 201603280555304_InitialCreate.
System.Data.SqlClient.SqlException (0x80131904): There is already an object named 'AspNetUsers' in the database.
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async, Int32 timeout, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.<NonQuery>b__0(DbCommand t, DbCommandInterceptionContext`1 c)
at System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch[TTarget,TInterceptionContext,TResult](TTarget target, Func`3 operation, TInterceptionContext interceptionContext, Action`3 executing, Action`3 executed)
at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.NonQuery(DbCommand command, DbCommandInterceptionContext interceptionContext)
at System.Data.Entity.Internal.InterceptableDbCommand.ExecuteNonQuery()
at System.Data.Entity.Migrations.DbMigrator.ExecuteSql(DbTransaction transaction, MigrationStatement migrationStatement, DbInterceptionContext interceptionContext)
at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.ExecuteSql(DbTransaction transaction, MigrationStatement migrationStatement, DbInterceptionContext interceptionContext)
at System.Data.Entity.Migrations.DbMigrator.ExecuteStatementsInternal(IEnumerable`1 migrationStatements, DbTransaction transaction, DbInterceptionContext interceptionContext)
at System.Data.Entity.Migrations.DbMigrator.ExecuteStatementsInternal(IEnumerable`1 migrationStatements, DbConnection connection)
at System.Data.Entity.Migrations.DbMigrator.<>c__DisplayClass30.<ExecuteStatements>b__2e()
at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.<>c__DisplayClass1.<Execute>b__0()
at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation)
at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Action operation)
at System.Data.Entity.Migrations.DbMigrator.ExecuteStatements(IEnumerable`1 migrationStatements, DbTransaction existingTransaction)
at System.Data.Entity.Migrations.DbMigrator.ExecuteStatements(IEnumerable`1 migrationStatements)
at System.Data.Entity.Migrations.Infrastructure.MigratorBase.ExecuteStatements(IEnumerable`1 migrationStatements)
at System.Data.Entity.Migrations.DbMigrator.ExecuteOperations(String migrationId, XDocument targetModel, IEnumerable`1 operations, IEnumerable`1 systemOperations, Boolean downgrading, Boolean auto)
at System.Data.Entity.Migrations.DbMigrator.ApplyMigration(DbMigration migration, DbMigration lastMigration)
at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.ApplyMigration(DbMigration migration, DbMigration lastMigration)
at System.Data.Entity.Migrations.DbMigrator.Upgrade(IEnumerable`1 pendingMigrations, String targetMigrationId, String lastMigrationId)
at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.Upgrade(IEnumerable`1 pendingMigrations, String targetMigrationId, String lastMigrationId)
at System.Data.Entity.Migrations.DbMigrator.UpdateInternal(String targetMigration)
at System.Data.Entity.Migrations.DbMigrator.<>c__DisplayClassc.<Update>b__b()
at System.Data.Entity.Migrations.DbMigrator.EnsureDatabaseExists(Action mustSucceedToKeepDatabase)
at System.Data.Entity.Migrations.Infrastructure.MigratorBase.EnsureDatabaseExists(Action mustSucceedToKeepDatabase)
at System.Data.Entity.Migrations.DbMigrator.Update(String targetMigration)
at System.Data.Entity.Migrations.Infrastructure.MigratorBase.Update(String targetMigration)
at System.Data.Entity.Migrations.Design.ToolingFacade.UpdateRunner.Run()
at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
at System.Data.Entity.Migrations.Design.ToolingFacade.Run(BaseRunner runner)
at System.Data.Entity.Migrations.Design.ToolingFacade.Update(String targetMigration, Boolean force)
at System.Data.Entity.Migrations.UpdateDatabaseCommand.<>c__DisplayClass2.<.ctor>b__0()
at System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(Action command)
ClientConnectionId:2640ae66-2469-42f1-92ad-2895d26f73e4
Error Number:2714,State:6,Class:16
There is already an object named 'AspNetUsers' in the database.
Configuration.cs（种子法）
namespace RecreationalServicesTicketingSystem.Migrations
{
using System;
using System.Data.Entity;
using System.Data.Entity.Migrations;
using System.Linq;
using RecreationalServicesTicketingSystem.Models;
using System.Collections.Generic;
internal sealed class Configuration : DbMigrationsConfiguration<RecreationalServicesTicketingSystem.Models.ApplicationDbContext>
{
public Configuration()
{
AutomaticMigrationsEnabled = false;
}
protected override void Seed(ApplicationDbContext context)
{
var departments = new List<Department>
{
new Department { DepartmentID = 1, DepartmentName = "IT"},
new Department { DepartmentID = 2, DepartmentName = "Menzit Admin" },
new Department { DepartmentID = 3, DepartmentName = "Human Resources"},
new Department { DepartmentID = 4, DepartmentName = "Mechanics" },
new Department { DepartmentID = 5, DepartmentName = "Directors" },
new Department { DepartmentID = 6, DepartmentName = "Operations"}
};
departments.ForEach(s => context.Departments.AddOrUpdate(p => p.DepartmentName, s));
context.SaveChanges();
var depots = new List<Depot>
{
new Depot { DepotID = 1, DepotName = "Porana"},
new Depot { DepotID = 2, DepotName = "Far North"},
new Depot { DepotID = 3, DepotName = "Horowhenua"},
new Depot { DepotID = 4, DepotName = "Manawatu"},
new Depot { DepotID = 5, DepotName = "Silverdale"},
new Depot { DepotID = 6, DepotName = "Christchurch"},
};
depots.ForEach(s => context.Depots.AddOrUpdate(p => p.DepotName, s));
context.SaveChanges();
var users = new List<ApplicationUser>
{
new ApplicationUser { FirstMidName = "Jason", LastName = "Wan",
EnrollmentDate = DateTime.Parse("2016-02-18"), DepartmentID = 1, DepotID = 1,IsAdministrator = true},
new ApplicationUser { FirstMidName = "Andy", LastName = "Domagas",
EnrollmentDate = DateTime.Parse("2016-02-18"), DepartmentID = 1,DepotID = 1,IsAdministrator = true},
new ApplicationUser { FirstMidName = "Denis", LastName = "Djohar",
EnrollmentDate = DateTime.Parse("2016-02-18"), DepartmentID = 1 ,DepotID = 1,IsAdministrator = true },
new ApplicationUser { FirstMidName = "Christine", LastName = "West",
EnrollmentDate = DateTime.Parse("2016-02-18"), DepartmentID = 2, DepotID = 3,IsAdministrator = false},
};
users.ForEach(s => context.Users.AddOrUpdate(p => p.FirstMidName, s));
context.SaveChanges();
users.ForEach(s => context.Users.AddOrUpdate(p => p.LastName, s));
context.SaveChanges();
var categories = new List<Category>
{
new Category {CategoryID = 0001, CategoryName = "Desktop"},
new Category {CategoryID = 0002, CategoryName = "Mobile"},
new Category {CategoryID = 0003, CategoryName = "Menzits"},
new Category {CategoryID = 0004, CategoryName = "XMPRO"},
new Category {CategoryID = 0005, CategoryName = "Con-X"},
new Category {CategoryID = 0006, CategoryName = "Promapp"},
new Category {CategoryID = 0007, CategoryName = "QGIS"},
};
categories.ForEach(s => context.Categories.AddOrUpdate(p => p.CategoryName, s));
context.SaveChanges();
var tickets = new List<Ticket>
{
new Ticket {
UserID = users.Single(s => s.LastName == "Wan").Id, //UserID
CategoryID = categories.Single(c => c.CategoryName == "Con-X" ).CategoryID,
Issue = ("Con-X Login Error"),
Priority = Priority.High
},
new Ticket {
UserID = users.Single(s => s.LastName == "Wan").Id, //UserID
CategoryID = categories.Single(c => c.CategoryName == "Desktop" ).CategoryID,
Issue = ("Can't remote access C0123"),
Priority = Priority.Med
},
};
foreach (Ticket e in tickets)
{
var ticketInDataBase = context.Tickets.Where(
s =>
s.User.Id == e.UserID && //UserID
s.Category.CategoryID == e.CategoryID).SingleOrDefault();
if (ticketInDataBase == null)
{
context.Tickets.Add(e);
}
}
context.SaveChanges();
}
}
}
您的 SQL Express 数据库中确实有一个带有 AspNetUsers table 的数据库。您显示的屏幕截图针对的是 SQL 服务器实例，而不是您的连接字符串正在访问的实例。
- 截图：
(localdb)\MSSqlLocalDb
- 连接字符串：
.\SQLExpress（相当于(local)\SQLExpress）
此外，正如 LoLeRji 所指出的，您没有在连接字符串中指定数据库名称。因此，您的 table 将在服务器实例的默认数据库（通常是 master 数据库）中创建。
在添加高级选项（如果有）之前，您应该始终确保您的连接字符串遵循两种模式之一。
SERVER=<servername\instancename>;DATABASE=<databasename>;UID=<username>;PWD=<password>;SERVER=<servername\instancename>;DATABASE=<databasename>;Integrated Security=true;
我不太确定这会有什么帮助，但是当我读取你的连接字符串时，我看不到你试图连接到哪个数据库。连接字符串仅声明 ./SQLEXPRESS 为数据源，但未给出数据库名称。
例如，据我所知，连接字符串应该类似于 "data source=<dbserver>;initial catalog=<databasename>;..." 或 "data source=<path>\<dbname>;..."。
我认为问题是您正在尝试更新数据库，但 entity framework 不知道要更新哪个数据库。
希望对您有所帮助。
我正在尝试克隆具有身份角色的 MVC5 并从此 tutorial and the project is here 进行授权。
我试图在我的程序包管理器控制台中使用 update-database，但它一直说我有
There is already an object named 'AspNetUsers' in the database.
但是如果你看图片，我没有包含这些表的数据库。
WebConfig 连接字符串
<add name="DefaultConnection" connectionString="Data Source=.\SQLEXPRESS;Integrated Security=True;Connect Timeout=15;Encrypt=False;TrustServerCertificate=False;ApplicationIntent=ReadWrite;MultiSubnetFailover=False" providerName="System.Data.SqlClient" />
PM> Update-Database
Specify the '-Verbose' flag to view the SQL statements being applied to the target database.
Applying explicit migrations: [201603280555304_InitialCreate].
Applying explicit migration: 201603280555304_InitialCreate.
System.Data.SqlClient.SqlException (0x80131904): There is already an object named 'AspNetUsers' in the database.
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async, Int32 timeout, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.<NonQuery>b__0(DbCommand t, DbCommandInterceptionContext`1 c)
at System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch[TTarget,TInterceptionContext,TResult](TTarget target, Func`3 operation, TInterceptionContext interceptionContext, Action`3 executing, Action`3 executed)
at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.NonQuery(DbCommand command, DbCommandInterceptionContext interceptionContext)
at System.Data.Entity.Internal.InterceptableDbCommand.ExecuteNonQuery()
at System.Data.Entity.Migrations.DbMigrator.ExecuteSql(DbTransaction transaction, MigrationStatement migrationStatement, DbInterceptionContext interceptionContext)
at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.ExecuteSql(DbTransaction transaction, MigrationStatement migrationStatement, DbInterceptionContext interceptionContext)
at System.Data.Entity.Migrations.DbMigrator.ExecuteStatementsInternal(IEnumerable`1 migrationStatements, DbTransaction transaction, DbInterceptionContext interceptionContext)
at System.Data.Entity.Migrations.DbMigrator.ExecuteStatementsInternal(IEnumerable`1 migrationStatements, DbConnection connection)
at System.Data.Entity.Migrations.DbMigrator.<>c__DisplayClass30.<ExecuteStatements>b__2e()
at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.<>c__DisplayClass1.<Execute>b__0()
at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation)
at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Action operation)
at System.Data.Entity.Migrations.DbMigrator.ExecuteStatements(IEnumerable`1 migrationStatements, DbTransaction existingTransaction)
at System.Data.Entity.Migrations.DbMigrator.ExecuteStatements(IEnumerable`1 migrationStatements)
at System.Data.Entity.Migrations.Infrastructure.MigratorBase.ExecuteStatements(IEnumerable`1 migrationStatements)
at System.Data.Entity.Migrations.DbMigrator.ExecuteOperations(String migrationId, XDocument targetModel, IEnumerable`1 operations, IEnumerable`1 systemOperations, Boolean downgrading, Boolean auto)
at System.Data.Entity.Migrations.DbMigrator.ApplyMigration(DbMigration migration, DbMigration lastMigration)
at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.ApplyMigration(DbMigration migration, DbMigration lastMigration)
at System.Data.Entity.Migrations.DbMigrator.Upgrade(IEnumerable`1 pendingMigrations, String targetMigrationId, String lastMigrationId)
at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.Upgrade(IEnumerable`1 pendingMigrations, String targetMigrationId, String lastMigrationId)
at System.Data.Entity.Migrations.DbMigrator.UpdateInternal(String targetMigration)
at System.Data.Entity.Migrations.DbMigrator.<>c__DisplayClassc.<Update>b__b()
at System.Data.Entity.Migrations.DbMigrator.EnsureDatabaseExists(Action mustSucceedToKeepDatabase)
at System.Data.Entity.Migrations.Infrastructure.MigratorBase.EnsureDatabaseExists(Action mustSucceedToKeepDatabase)
at System.Data.Entity.Migrations.DbMigrator.Update(String targetMigration)
at System.Data.Entity.Migrations.Infrastructure.MigratorBase.Update(String targetMigration)
at System.Data.Entity.Migrations.Design.ToolingFacade.UpdateRunner.Run()
at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
at System.Data.Entity.Migrations.Design.ToolingFacade.Run(BaseRunner runner)
at System.Data.Entity.Migrations.Design.ToolingFacade.Update(String targetMigration, Boolean force)
at System.Data.Entity.Migrations.UpdateDatabaseCommand.<>c__DisplayClass2.<.ctor>b__0()
at System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(Action command)
ClientConnectionId:2640ae66-2469-42f1-92ad-2895d26f73e4
Error Number:2714,State:6,Class:16
There is already an object named 'AspNetUsers' in the database.
Configuration.cs（种子法）
namespace RecreationalServicesTicketingSystem.Migrations
{
using System;
using System.Data.Entity;
using System.Data.Entity.Migrations;
using System.Linq;
using RecreationalServicesTicketingSystem.Models;
using System.Collections.Generic;
internal sealed class Configuration : DbMigrationsConfiguration<RecreationalServicesTicketingSystem.Models.ApplicationDbContext>
{
public Configuration()
{
AutomaticMigrationsEnabled = false;
}
protected override void Seed(ApplicationDbContext context)
{
var departments = new List<Department>
{
new Department { DepartmentID = 1, DepartmentName = "IT"},
new Department { DepartmentID = 2, DepartmentName = "Menzit Admin" },
new Department { DepartmentID = 3, DepartmentName = "Human Resources"},
new Department { DepartmentID = 4, DepartmentName = "Mechanics" },
new Department { DepartmentID = 5, DepartmentName = "Directors" },
new Department { DepartmentID = 6, DepartmentName = "Operations"}
};
departments.ForEach(s => context.Departments.AddOrUpdate(p => p.DepartmentName, s));
context.SaveChanges();
var depots = new List<Depot>
{
new Depot { DepotID = 1, DepotName = "Porana"},
new Depot { DepotID = 2, DepotName = "Far North"},
new Depot { DepotID = 3, DepotName = "Horowhenua"},
new Depot { DepotID = 4, DepotName = "Manawatu"},
new Depot { DepotID = 5, DepotName = "Silverdale"},
new Depot { DepotID = 6, DepotName = "Christchurch"},
};
depots.ForEach(s => context.Depots.AddOrUpdate(p => p.DepotName, s));
context.SaveChanges();
var users = new List<ApplicationUser>
{
new ApplicationUser { FirstMidName = "Jason", LastName = "Wan",
EnrollmentDate = DateTime.Parse("2016-02-18"), DepartmentID = 1, DepotID = 1,IsAdministrator = true},
new ApplicationUser { FirstMidName = "Andy", LastName = "Domagas",
EnrollmentDate = DateTime.Parse("2016-02-18"), DepartmentID = 1,DepotID = 1,IsAdministrator = true},
new ApplicationUser { FirstMidName = "Denis", LastName = "Djohar",
EnrollmentDate = DateTime.Parse("2016-02-18"), DepartmentID = 1 ,DepotID = 1,IsAdministrator = true },
new ApplicationUser { FirstMidName = "Christine", LastName = "West",
EnrollmentDate = DateTime.Parse("2016-02-18"), DepartmentID = 2, DepotID = 3,IsAdministrator = false},
};
users.ForEach(s => context.Users.AddOrUpdate(p => p.FirstMidName, s));
context.SaveChanges();
users.ForEach(s => context.Users.AddOrUpdate(p => p.LastName, s));
context.SaveChanges();
var categories = new List<Category>
{
new Category {CategoryID = 0001, CategoryName = "Desktop"},
new Category {CategoryID = 0002, CategoryName = "Mobile"},
new Category {CategoryID = 0003, CategoryName = "Menzits"},
new Category {CategoryID = 0004, CategoryName = "XMPRO"},
new Category {CategoryID = 0005, CategoryName = "Con-X"},
new Category {CategoryID = 0006, CategoryName = "Promapp"},
new Category {CategoryID = 0007, CategoryName = "QGIS"},
};
categories.ForEach(s => context.Categories.AddOrUpdate(p => p.CategoryName, s));
context.SaveChanges();
var tickets = new List<Ticket>
{
new Ticket {
UserID = users.Single(s => s.LastName == "Wan").Id, //UserID
CategoryID = categories.Single(c => c.CategoryName == "Con-X" ).CategoryID,
Issue = ("Con-X Login Error"),
Priority = Priority.High
},
new Ticket {
UserID = users.Single(s => s.LastName == "Wan").Id, //UserID
CategoryID = categories.Single(c => c.CategoryName == "Desktop" ).CategoryID,
Issue = ("Can't remote access C0123"),
Priority = Priority.Med
},
};
foreach (Ticket e in tickets)
{
var ticketInDataBase = context.Tickets.Where(
s =>
s.User.Id == e.UserID && //UserID
s.Category.CategoryID == e.CategoryID).SingleOrDefault();
if (ticketInDataBase == null)
{
context.Tickets.Add(e);
}
}
context.SaveChanges();
}
}
}
您的 SQL Express 数据库中确实有一个带有 AspNetUsers table 的数据库。您显示的屏幕截图针对的是 SQL 服务器实例，而不是您的连接字符串正在访问的实例。
- 截图：
(localdb)\MSSqlLocalDb - 连接字符串：
.\SQLExpress（相当于(local)\SQLExpress）
此外，正如 LoLeRji 所指出的，您没有在连接字符串中指定数据库名称。因此，您的 table 将在服务器实例的默认数据库（通常是 master 数据库）中创建。
在添加高级选项（如果有）之前，您应该始终确保您的连接字符串遵循两种模式之一。
SERVER=<servername\instancename>;DATABASE=<databasename>;UID=<username>;PWD=<password>;SERVER=<servername\instancename>;DATABASE=<databasename>;Integrated Security=true;
我不太确定这会有什么帮助，但是当我读取你的连接字符串时，我看不到你试图连接到哪个数据库。连接字符串仅声明 ./SQLEXPRESS 为数据源，但未给出数据库名称。
例如，据我所知，连接字符串应该类似于 "data source=<dbserver>;initial catalog=<databasename>;..." 或 "data source=<path>\<dbname>;..."。
我认为问题是您正在尝试更新数据库，但 entity framework 不知道要更新哪个数据库。
希望对您有所帮助。