C# 在异常情况下添加迁移结果，并显示消息“0”；无效列"；

我正在努力进行EntityFramework代码优先迁移。我已经用

启用迁移

初始化了我的项目。这很顺利，在我创建了一些模型并将它们添加到我的

DataContext

类之后，我执行了命令

addmigrationinitialcreate

。这也很顺利，我通过执行

updatedatabase

成功地更新了我的数据库

几天后，我需要在我的表中添加一个名为

Altitude

的字段，这是一种

double

类型。因此，我添加了字段并运行了

addmigration addaighty

。这产生了一个异常（完整跟踪见下文），消息为无效列“高度”

这是我的模型类（

Location.cs

）：

这是我的

InitialCreate

迁移脚本：

public partial class InitialCreate : DbMigration
{
    public override void Up()
    {
        CreateTable(
            "dbo.Locations",
            c => new
                {
                    LocationId = c.Int(nullable: false, identity: true),
                    SipAddress = c.String(),
                    Latitude = c.Double(nullable: false),
                    Longitude = c.Double(nullable: false),
                    LastUpdatedAt = c.DateTime(nullable: false),
                })
            .PrimaryKey(t => t.LocationId);

    }

    public override void Down()
    {
        DropTable("dbo.Locations");
    }
}

这是我的配置：

internal sealed class Configuration : DbMigrationsConfiguration<myNameSpace.DataContext>
{
    public Configuration()
    {
        AutomaticMigrationsEnabled = false;
    }

    protected override void Seed(myNameSpace.DataContext context)
    {
        //  This method will be called after migrating to the latest version.

        //  You can use the DbSet<T>.AddOrUpdate() helper extension method 
        //  to avoid creating duplicate seed data. E.g.
        //
        //    context.People.AddOrUpdate(
        //      p => p.FullName,
        //      new Person { FullName = "Andrew Peters" },
        //      new Person { FullName = "Brice Lambson" },
        //      new Person { FullName = "Rowan Miller" }
        //    );
        //
    }
}

内部密封类配置：dbmigtorinsconfiguration
{
公共配置（）
{
AutomaticMiggerationsEnabled=假；
}
受保护的重写无效种子（myNameSpace.DataContext上下文）
{
//迁移到最新版本后将调用此方法。
//您可以使用DbSet.AddOrUpdate（）助手扩展方法
//避免创建重复的种子数据。
//
//context.People.AddOrUpdate(
//p=>p.FullName，
//新人{FullName=“安德鲁·彼得斯”}，
//新人{FullName=“Brice Lambson”}，
//新人{FullName=“Rowan Miller”}
//    );
//
}
}

完整跟踪：

System.Data.Entity.Core.EntityCommandExecutionException: An error occurred while executing the command definition. See the inner exception for details. ---> System.Data.SqlClient.SqlException: Invalid column name 'Altitude'.
   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.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)
   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 System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
   at System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior)
   at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.<Reader>b__c(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.Reader(DbCommand command, DbCommandInterceptionContext interceptionContext)
   at System.Data.Entity.Internal.InterceptableDbCommand.ExecuteDbDataReader(CommandBehavior behavior)
   at System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior)
   at System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior)
   --- End of inner exception stack trace ---
   at System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior)
   at System.Data.Entity.Core.Objects.Internal.ObjectQueryExecutionPlan.Execute[TResultType](ObjectContext context, ObjectParameterCollection parameterValues)
   at System.Data.Entity.Core.Objects.ObjectQuery`1.<>c__DisplayClass7.<GetResults>b__6()
   at System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction[T](Func`1 func, IDbExecutionStrategy executionStrategy, Boolean startLocalTransaction, Boolean releaseConnectionOnSuccess)
   at System.Data.Entity.Core.Objects.ObjectQuery`1.<>c__DisplayClass7.<GetResults>b__5()
   at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation)
   at System.Data.Entity.Core.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption)
   at System.Data.Entity.Core.Objects.ObjectQuery`1.<System.Collections.Generic.IEnumerable<T>.GetEnumerator>b__0()
   at System.Data.Entity.Internal.LazyEnumerator`1.MoveNext()
   at System.Data.Entity.QueryableExtensions.Load(IQueryable source)
   at myNameSpace.DataContextFactory.Create() in myNameSpace\DataContextFactory.cs:line 12
   at System.Data.Entity.Infrastructure.DbContextInfo.CreateInstance()
   at System.Data.Entity.Infrastructure.DbContextInfo..ctor(Type contextType, DbProviderInfo modelProviderInfo, AppConfig config, DbConnectionInfo connectionInfo, Func`1 resolver)
   at System.Data.Entity.Migrations.DbMigrator..ctor(DbMigrationsConfiguration configuration, DbContext usersContext, DatabaseExistenceState existenceState, Boolean calledByCreateDatabase)
   at System.Data.Entity.Migrations.DbMigrator..ctor(DbMigrationsConfiguration configuration)
   at System.Data.Entity.Migrations.Design.MigrationScaffolder..ctor(DbMigrationsConfiguration migrationsConfiguration)
   at System.Data.Entity.Migrations.Design.ToolingFacade.ScaffoldRunner.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.Scaffold(String migrationName, String language, String rootNamespace, Boolean ignoreChanges)
   at System.Data.Entity.Migrations.AddMigrationCommand.Execute(String name, Boolean force, Boolean ignoreChanges)
   at System.Data.Entity.Migrations.AddMigrationCommand.<>c__DisplayClass2.<.ctor>b__0()
   at System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(Action command)

System.Data.Entity.Core.EntityCommandExecutionException:执行命令定义时出错。有关详细信息，请参见内部异常。-->System.Data.SqlClient.SqlException:列名“Altitude”无效。
位于System.Data.SqlClient.SqlConnection.OneError（SqlException异常，布尔断开连接，操作'1 wrapCloseInAction）
位于System.Data.SqlClient.SqlInternalConnection.OneError（SqlException异常，布尔断开连接，操作'1 wrapCloseInAction）
位于System.Data.SqlClient.TdsParser.ThroweException和Warning（TdsParserStateObject StateObjectStateObj、布尔调用方连接锁、布尔异步关闭）
位于System.Data.SqlClient.TdsParser.TryRun（RunBehavior RunBehavior、SqlCommand cmdHandler、SqlDataReader dataStream、BulkCopySimpleResultSet bulkCopyHandler、TdsParserStateObject stateObj、Boolean和dataReady）
位于System.Data.SqlClient.SqlDataReader.TryConsumeMetaData（）处
在System.Data.SqlClient.SqlDataReader.get_MetaData（）处
位于System.Data.SqlClient.SqlCommand.FinishExecuteReader（SqlDataReader ds、RunBehavior、String ResetOptions String）
位于System.Data.SqlClient.SqlCommand.RunExecuteReaderTds（CommandBehavior cmdBehavior、RunBehavior RunBehavior、Boolean returnStream、Boolean async、Int32超时、任务和任务、Boolean asyncWrite、SqlDataReader ds）
位于System.Data.SqlClient.SqlCommand.RunExecuteReader（CommandBehavior cmdBehavior、RunBehavior RunBehavior、Boolean returnStream、String方法、TaskCompletionSource`1 completion、Int32超时、Task&Task、Boolean asyncWrite）
位于System.Data.SqlClient.SqlCommand.RunExecuteReader（CommandBehavior cmdBehavior、RunBehavior RunBehavior、Boolean returnStream、String方法）
位于System.Data.SqlClient.SqlCommand.ExecuteReader（CommandBehavior，String方法）
位于System.Data.SqlClient.SqlCommand.ExecuteDbDataReader（CommandBehavior）
位于System.Data.Common.DbCommand.ExecuteReader（CommandBehavior）
在System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.b_uÈc（DbCommand t，DbCommandInterceptionContext`1c）
在System.Data.Entity.Infrastructure.InternalDispatcher`1.Dispatch[TTarget，TInterceptionContext，TResult]（TTarget目标，Func`3操作，TInterceptionContext拦截Context，操作`3执行，操作`3执行）
位于System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.Reader（DbCommand命令，DbCommandInterceptionContext interceptionContext）
位于System.Data.Entity.Internal.InterceptableDbCommand.ExecuteDbDataReader（CommandBehavior）
位于System.Data.Common.DbCommand.ExecuteReader（CommandBehavior）
位于System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStorommands（EntityCommand EntityCommand，CommandBehavior）
---内部异常堆栈跟踪的结束---
位于System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStorommands（EntityCommand EntityCommand，CommandBehavior）
位于System.Data.Entity.Core.Objects.Internal.ObjectQueryExecutionPlan.Execute[TResultType]（ObjectContext上下文，ObjectParameterCollection parameterValues）
在System.Data.Entity.Core.Objects.ObjectQuery`1.c_u DisplayClass7.b__u6（）
在System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction[T]（Func`1 Func，IDBEcutionStrategy executionStrategy，Boolean startLocalTransaction，Boolean releaseConnectionOnSuccess）
在System.Data.Entity.Core.Objects.ObjectQuery`1.c__DisplayClass7.b__5（）中
在System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult]（Func`1操作）中
位于System.Data.Entity.Core.Objects.ObjectQuery`1.GetResults（可为null`1 forMergeOption）
位于System.Data.Entity.Core.Objects.ObjectQuery`1.b_u 0（）
位于System.Data.Entity.Internal.LazyEnumerator`1.MoveNext（）
位于System.Data.Entity.QueryableExtensions.Load（IQueryable源）
在myNameSpace\DataContextFactory.cs中的myNameSpace.DataContextFactory.Create（）处：第12行
位于System.Data.Entity.Infrastructure.DbContextInfo.CreateInstance（）处
位于System.Data.Entity.Infrastructure.DbContextInfo..ctor（类型contextType、DbProviderInfo modelProviderInfo、AppConfig配置、DbConnectionInfo connectionInfo、Func`1解析器）
在System.Data.Entity.Migrations.Dbmigator..ctor（DbMigrationsConfiguration配置，DbCo
System.Data.Entity.Core.EntityCommandExecutionException: An error occurred while executing the command definition. See the inner exception for details. ---> System.Data.SqlClient.SqlException: Invalid column name 'Altitude'.
   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.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)
   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 System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
   at System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior)
   at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.<Reader>b__c(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.Reader(DbCommand command, DbCommandInterceptionContext interceptionContext)
   at System.Data.Entity.Internal.InterceptableDbCommand.ExecuteDbDataReader(CommandBehavior behavior)
   at System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior)
   at System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior)
   --- End of inner exception stack trace ---
   at System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior)
   at System.Data.Entity.Core.Objects.Internal.ObjectQueryExecutionPlan.Execute[TResultType](ObjectContext context, ObjectParameterCollection parameterValues)
   at System.Data.Entity.Core.Objects.ObjectQuery`1.<>c__DisplayClass7.<GetResults>b__6()
   at System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction[T](Func`1 func, IDbExecutionStrategy executionStrategy, Boolean startLocalTransaction, Boolean releaseConnectionOnSuccess)
   at System.Data.Entity.Core.Objects.ObjectQuery`1.<>c__DisplayClass7.<GetResults>b__5()
   at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation)
   at System.Data.Entity.Core.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption)
   at System.Data.Entity.Core.Objects.ObjectQuery`1.<System.Collections.Generic.IEnumerable<T>.GetEnumerator>b__0()
   at System.Data.Entity.Internal.LazyEnumerator`1.MoveNext()
   at System.Data.Entity.QueryableExtensions.Load(IQueryable source)
   at myNameSpace.DataContextFactory.Create() in myNameSpace\DataContextFactory.cs:line 12
   at System.Data.Entity.Infrastructure.DbContextInfo.CreateInstance()
   at System.Data.Entity.Infrastructure.DbContextInfo..ctor(Type contextType, DbProviderInfo modelProviderInfo, AppConfig config, DbConnectionInfo connectionInfo, Func`1 resolver)
   at System.Data.Entity.Migrations.DbMigrator..ctor(DbMigrationsConfiguration configuration, DbContext usersContext, DatabaseExistenceState existenceState, Boolean calledByCreateDatabase)
   at System.Data.Entity.Migrations.DbMigrator..ctor(DbMigrationsConfiguration configuration)
   at System.Data.Entity.Migrations.Design.MigrationScaffolder..ctor(DbMigrationsConfiguration migrationsConfiguration)
   at System.Data.Entity.Migrations.Design.ToolingFacade.ScaffoldRunner.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.Scaffold(String migrationName, String language, String rootNamespace, Boolean ignoreChanges)
   at System.Data.Entity.Migrations.AddMigrationCommand.Execute(String name, Boolean force, Boolean ignoreChanges)
   at System.Data.Entity.Migrations.AddMigrationCommand.<>c__DisplayClass2.<.ctor>b__0()
   at System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(Action command)