Question

我在使用EF扩展BulkInsert（MVC5，EF6）时遇到了奇怪的问题。

这是我的代码结构：我的db上下文继承自IdentityDbContext（我使用Owin）实体界面

 public interface IMyObject
 {
    Guid Id { get; set; }
 }

基础实体对象

   public class MyObject: IMyObject
    {
        [Key]
        public Guid Id
        {
            get
            {
                if (_id == Guid.Empty)
                {
                    _id = Guid.NewGuid();
                }
                return _id;
            }
            set
            {
                _id = value;
            }
        }
        private Guid _id;

继承的实体对象

     public class Client : MyObject
    {
        [Required]
        [StringLength(255)]
        public string Name { get; set; }

        public string Town{get;set;}
....
    }

我正在尝试使用BulkInsert将大量Client对象插入数据库：

     private void InsertDataToDatabase<T>(ICollection<T> dbObjects) where T : class, IMyObject
            {
        MyContext.BulkInsert<T>(dbObjects, 5000);
//fails
    }

然而，这种标准插入方法工作正常：

     private void InsertDataToDatabase<T>(ICollection<T> dbObjects) where T : class, IMyObject
                {
             foreach (var entity in dbObjects)
            {
                MyContext.Set<T>().Add(entity);
            }
            MyContext.SaveChanges();
            //works fine
        }

BulkInsert中的exeption是：

System.Reflection.AmbiguousMatchException：找到了模糊匹配。在 System.RuntimeType.GetPropertyImpl（String name，BindingFlags bindingAttr，Binder binder，Type returnType，Type []类型， System.Type.GetProperty的ParameterModifier []修饰符）（String name， BindingFlags bindingAttr）at EntityFramework.MappingAPI.Extensions.TypeExtensions.GetProperty（类型 in，string，propertyName，Char separator） C：\ dev的\ EntityFramework.MappingAPI \树干\ SRC \ EntityFramework.MappingAPI \扩展\ TypeExtensions.cs：线 79点 EntityFramework.MappingAPI.Mappers.MapperBase.MapProperty（EntityMap entityMap，EdmProperty edmProperty，Int32＆amp;我，弦乐＆amp;前缀） C：\ dev的\ EntityFramework.MappingAPI \树干\ SRC \ EntityFramework.MappingAPI \映射器\ MapperBase.cs：线 488 at EntityFramework.MappingAPI.Mappers.MapperBase.MapEntity（String typeFullName，EdmType edmItem）in C：\ dev的\ EntityFramework.MappingAPI \树干\ SRC \ EntityFramework.MappingAPI \映射器\ MapperBase.cs：线 357 at EntityFramework.MappingAPI.Mappings.DbMapping..ctor（DbContext 上下文） C：\ dev的\ EntityFramework.MappingAPI \树干\ SRC \ EntityFramework.MappingAPI \映象\ DbMapping.cs：线 82在EntityFramework.MappingAPI.EfMap.Get（DbContext context）中 C：\ dev的\ EntityFramework.MappingAPI \树干\ SRC \ EntityFramework.MappingAPI \ EfMap.cs：线 60点到 EntityFramework.MappingAPI.Extensions.MappingApiExtensions.Db（的DbContext ctx，类型类型）in C：\ dev的\ EntityFramework.MappingAPI \树干\ SRC \ EntityFramework.MappingAPI \扩展\ MappingApiExtensions.cs：线 51点 System.Linq.Enumerable.ToDictionary [TSource，TKey，TElement]（IEnumerable 1 source, Func 2 keySelector，Func 2 elementSelector, IEqualityComparer 1 comparer）at at EntityFramework.BulkInsert.Helpers.MappedDataReader 1..ctor(IEnumerable 1 enumerable，IEfBulkInsertProvider provider）in C：\ dev的\ EntityFramework.BulkInsert \ dev的\ SRC \ EntityFramework.BulkInsert \助手\ MappedDataReader.cs：线 58点 EntityFramework.BulkInsert.Providers.EfSqlBulkInsertProviderWithMappedDataReader.Run [T]（IEnumerable 1 entities, SqlTransaction transaction, BulkInsertOptions options) in c:\dev\EntityFramework.BulkInsert\dev\Src\EntityFramework.BulkInsert\Providers\EfSqlBulkInsertProviderWithMappedDataReader.cs:line 22 at EntityFramework.BulkInsert.Providers.ProviderBase 2.Run [T]（IEnumerable 1 entities, IDbTransaction transaction, BulkInsertOptions options) in c:\dev\EntityFramework.BulkInsert\dev\Src\EntityFramework.BulkInsert\Providers\ProviderBase.cs:line 77 at EntityFramework.BulkInsert.Providers.ProviderBase 2.Run [T]（IEnumerable 1 entities, BulkInsertOptions options) in c:\dev\EntityFramework.BulkInsert\dev\Src\EntityFramework.BulkInsert\Providers\ProviderBase.cs:line 105 at EntityFramework.BulkInsert.Extensions.BulkInsertExtension.BulkInsert[T](DbContext context, IEnumerable 1个实体，SqlBulkCopyOptions sqlBulkCopyOptions，Nullable 1 batchSize) in c:\dev\EntityFramework.BulkInsert\dev\Src\EntityFramework.BulkInsert\Extensions\BulkInsertExtension.cs:line 95 at EntityFramework.BulkInsert.Extensions.BulkInsertExtension.BulkInsert[T](DbContext context, IEnumerable 1个实体，Nullable 1 batchSize) in c:\dev\EntityFramework.BulkInsert\dev\Src\EntityFramework.BulkInsert\Extensions\BulkInsertExtension.cs:line 75 at My.Portal.Controllers.InstallController.InsertDataToDatabase[T](ICollection 1 对象） C：\ XXXX \ \控制器InstallController.cs：行 581

请帮忙。

EF DbContext.BulkInsert：发现模糊匹配

0 个答案: