Question

我正在编写一个预先创建的数据库，并且我已经为表创建了DBSet定义。当前数据库继承自以前的系统，每个表包含超过100,000行数据（事务超过5年）。我们将它放入一个新的应用程序，移植数据。

因此，手动创建数据库，而不是代码优先。新类首先是代码，我们希望将这些表自动生成到表中。

我已经检查过，并且用户对db_owner访问我们用于数据库连接的数据库。该数据库也不在ReadOnly中。

以下是创建的Context类：

using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using BHI.WCMS.DAL;
using System.ComponentModel.DataAnnotations;
using System.Data.Entity.Infrastructure;
using System.Data.Entity.Migrations;


namespace BHI.WCMS.DAL.Partner
{
    public class PartnerContext : DbContext
    {
        public PartnerContext()
            : base("partner")
        {
            //Configuration.LazyLoadingEnabled = false;
            Database.SetInitializer<PartnerContext>(new MigrateDatabaseToLatestVersion<PartnerContext, PartnerConfiguration>());
        }

        public PartnerContext(string ConnectionStringName)
            : base(ConnectionStringName)
        {
        }

        //protected override void OnModelCreating(DbModelBuilder modelBuilder)
        //{
        //    modelBuilder.Entity<PartnerProfileServiceCenterTransaction>().Property(p => p.AmountDue).HasPrecision(8, 2);
        //    base.OnModelCreating(modelBuilder);
        //}

        public DbSet<WarrantyForms> WarrantyForms { get; set; }
        public DbSet<WarrantyFormLines> WarrantyFormLines { get; set; }
        public DbSet<WarrantyFormLineParts> WarrantyFormLineParts { get; set; }
        public DbSet<WarrantyFormLineReplacements> WarrantyFormLineReplacements { get; set; }
        public DbSet<PartnerProfile> PartnerProfiles { get; set; }
        public DbSet<PartnerProfileContactInfo> PartnerProfileContactInfos { get; set; }
        public DbSet<PartnerProfileCustomerAddress> PartnerProfileCustomerAddresses { get; set; }
        public DbSet<PartnerProfileServiceCenterTransaction> PartnerProfileServiceCenterTransactions { get; set; }

        public static PartnerProfile InsertPartnerProfile(PartnerProfile profile)
        {
            using (var db = new PartnerContext())
            {
                foreach (var addy in profile.BillingAddress)
                {
                    addy.DateCreated = DateTime.Now;
                    addy.DateModified = DateTime.Now;
                    db.PartnerProfileCustomerAddresses.Add(addy);
                    db.SaveChanges();
                }

                //profile.DateCreated = DateTime.Now;
                //profile.DateModified = DateTime.Now;
                //db.PartnerProfiles.Add(profile);
                //db.SaveChanges();
            }
            return profile;
        }   // end of  public static PartnerProfile InsertPartnerProfile(PartnerProfile profile)

        public static PartnerProfile UpdatePartnerProfile(PartnerProfile profile)
        {
            using (var db = new PartnerContext())
            {

            }
            return profile;
        }   // end of  public static PartnerProfile UpdatePartnerProfile(PartnerProfile profile)

        public static PartnerProfile SelectPartnerProfile(PartnerProfile profile)
        {
            using (var db = new BHI.WCMS.DAL.Partner.PartnerContext())
            {

            }
            return profile;
        }   // end of  public static PartnerProfile SelectPartnerProfile(PartnerProfile profile)

    }       // end of class WarrantyContext : DbContext

    internal sealed class PartnerConfiguration : DbMigrationsConfiguration<PartnerContext>
    {
        public PartnerConfiguration()
        {
            AutomaticMigrationsEnabled = true;
        }
    }
}           // end of namespace BHI.WCMS.DAL.Partner

我已经考虑过按其他文章添加配置

这不起作用。我也尝试过这个 Enable-Migrations -ContextTypeName BHI.WCMS.DAL.Partner.PartnerContext -EnableAutomaticMigrations

这也不起作用。当我将Context从Partner更改为Logging（一个100％代码优先的数据库）时，它会毫无问题地加载表。所以，这导致我做出以下假设：

定义表格的类文件没有问题
引用文件的DBContext文件没有问题
因为我能够从数据库中检索旧表的数据，所以数据库的用户名/密码没有问题
由于用户帐户具有db_owner访问权限，因此数据库不应存在任何权限问题。

所有这一切，我正在看这个，并没有能够创建表。因此，当前存在的表中似乎存在问题，或者数据库本身存在问题（没有__MigrationHistory表）。

我得到的错误信息是：

    Exception: System.Data.Entity.Infrastructure.DbUpdateException
    Message: An error occurred while updating the entries. See the inner exception for details.
    Source: EntityFramework
       at System.Data.Entity.Internal.InternalContext.SaveChanges()
       at BHI.WCMS.DAL.Partner.WarrantyContext.InsertPartnerProfile(PartnerProfile profile) in c:\inetpub\Bissell SiteCore\Dev\Partners-Dev\BHI.WCMS\BHI.WCMS.DAL\Partner\WarrantyContext.cs:line 47
       at BHI.WCMS.ECommerce.BWS.Partner.MapServiceToObject(ServiceCenterResponse response) in c:\inetpub\Bissell SiteCore\Dev\Partners-Dev\BHI.WCMS\BHI.WCMS.ECommerce.BWS\Partner.cs:line 151
       at BHI.WCMS.ECommerce.BWS.Partner.BWSGetServiceCenterInfo(String accountNumber, String zipCode) in c:\inetpub\Bissell SiteCore\Dev\Partners-Dev\BHI.WCMS\BHI.WCMS.ECommerce.BWS\Partner.cs:line 48

    Nested Exception

    Exception: System.Data.Entity.Core.UpdateException
    Message: An error occurred while updating the entries. See the inner exception for details.
    Source: EntityFramework
       at System.Data.Entity.Core.Mapping.Update.Internal.UpdateTranslator.Update()
       at System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction[T](Func`1 func, IDbExecutionStrategy executionStrategy, Boolean startLocalTransaction, Boolean releaseConnectionOnSuccess)
       at System.Data.Entity.Core.Objects.ObjectContext.SaveChangesToStore(SaveOptions options, IDbExecutionStrategy executionStrategy, Boolean startLocalTransaction)
       at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation)
       at System.Data.Entity.Core.Objects.ObjectContext.SaveChangesInternal(SaveOptions options, Boolean executeInExistingTransaction)
       at System.Data.Entity.Internal.InternalContext.SaveChanges()

    Nested Exception

    Exception: System.Data.SqlClient.SqlException
    Message: Invalid object name 'dbo.PartnerProfileCustomerAddresses'.
    Source: .Net SqlClient Data Provider
       at System.Data.SqlClient.SqlConnection.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.SqlDataReader.TryConsumeMetaData()
       at System.Data.SqlClient.SqlDataReader.get_MetaData()
       at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)
       at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds, Boolean describeParameterEncryptionRequest)
       at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite)
       at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
       at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
       at Glimpse.Ado.AlternateType.GlimpseDbCommand.ExecuteDbDataReader(CommandBehavior behavior)
       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.Reader(DbCommand command, DbCommandInterceptionContext interceptionContext)
       at System.Data.Entity.Core.Mapping.Update.Internal.DynamicUpdateCommand.Execute(Dictionary`2 identifierValues, List`1 generatedValues)
       at System.Data.Entity.Core.Mapping.Update.Internal.UpdateTranslator.Update()

对此的任何帮助将不胜感激。

由于罗伯特

Answer 1

好的，在与这里的其中一个人合作时，我们能够弄清楚发生了什么。

这可以创建一个数据库，然后允许它在手动创建的数据库中创建更多表（这就是我们在Logging表上所做的）。
这个问题与上下文错误有关，但我对细节的关注不够。

我的实体课程编码错误（我在一年内没有注意到它）

版本不正确

public partial class WarrantyFormLineReplacements
{
    #region Class Variables
    public int in_WFLineReplacementID;
    public int in_WFlineId;
    public int in_WFId;
    [MaxLength(120)]
    public string vc_ModelNumber;
    public decimal dc_ReplacementCost;
    [MaxLength(255)]
    public string vc_InsertBy;
    public DateTime dt_InsertDate;
    [MaxLength(255)]
    public string vc_UpdateBy;
    public DateTime dt_UpdateDate;
    #endregion
}       // end of public partial class WarrantyFormLineReplacements

更正版本

public partial class WarrantyFormLineReplacements
{
    #region Class Variables
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int in_WFLineReplacementID {get;set;}
    public int in_WFlineId { get; set; }
    public int in_WFId { get; set; }
    [MaxLength(120)]
    public string vc_ModelNumber { get; set; }
    public decimal dc_ReplacementCost { get; set; }
    [MaxLength(255)]
    public string vc_InsertBy { get; set; }
    public DateTime dt_InsertDate { get; set; }
    [MaxLength(255)]
    public string vc_UpdateBy { get; set; }
    public DateTime dt_UpdateDate { get; set; }
    #endregion
}       // end of public partial class WarrantyFormLineReplacements

我造成的核心问题

核心问题是，我没有密钥（尝试捕获并记录捕获），当我添加密钥时，我没有为每个变量定义访问器/ mutator方法（{get;设置;}）。一旦我添加了这些，它就创建了表，而没有任何问题进入已经创建的数据库。它还按照我的预期创建了__MigrationHistory表。

数据库已经创建，新表未添加

1 个答案: