System.Data.Entity.Core.EntityCommandExecutionException was caught.

Question

 Actually I think it's a bug.
Exception Details;
System.Data.Entity.Core.EntityCommandExecutionException was caught
  HResult=-2146232004
  Message=The data reader is incompatible with the specified 'EntitySampleWFA.Source.BO.Student'. A member of the type, 'Id', does not have a corresponding column in the data reader with the same name.
  Source=EntityFramework
  StackTrace:
       source: System.Data.Entity.Core.Query.InternalTrees.ColumnMapFactory.GetMemberOrdinalFromReader(DbDataReader storeDataReader, EdmMember member, EdmType currentType, Dictionary`2 renameList)
       source: System.Data.Entity.Core.Query.InternalTrees.ColumnMapFactory.GetColumnMapsForType(DbDataReader storeDataReader, EdmType edmType, Dictionary`2 renameList)
       source: System.Data.Entity.Core.Query.InternalTrees.ColumnMapFactory.CreateColumnMapFromReaderAndType(DbDataReader storeDataReader, EdmType edmType, EntitySet entitySet, Dictionary`2 renameList)
       source: System.Data.Entity.Core.Objects.ObjectContext.InternalTranslate[TElement](DbDataReader reader, String entitySetName, MergeOption mergeOption, Boolean streaming, EntitySet& entitySet, TypeUsage& edmType)
       source: System.Data.Entity.Core.Objects.ObjectContext.ExecuteStoreQueryInternal[TElement](String commandText, String entitySetName, ExecutionOptions executionOptions, Object[] parameters)
       konum: System.Data.Entity.Core.Objects.ObjectContext.<>c__DisplayClass65`1.<ExecuteStoreQueryReliably>b__64()
       source: System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction[T](Func`1 func, IDbExecutionStrategy executionStrategy, Boolean startLocalTransaction, Boolean releaseConnectionOnSuccess)
       source: System.Data.Entity.Core.Objects.ObjectContext.<>c__DisplayClass65`1.<ExecuteStoreQueryReliably>b__63()
       source: System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation)
       source: System.Data.Entity.Core.Objects.ObjectContext.ExecuteStoreQueryReliably[TElement](String commandText, String entitySetName, ExecutionOptions executionOptions, Object[] parameters)
       source: System.Data.Entity.Core.Objects.ObjectContext.ExecuteStoreQuery[TElement](String commandText, ExecutionOptions executionOptions, Object[] parameters)
       source: System.Data.Entity.Internal.InternalContext.<>c__DisplayClass14`1.<ExecuteSqlQuery>b__13()
       source: System.Data.Entity.Internal.LazyEnumerator`1.MoveNext()
       source: System.Linq.Enumerable.Count[TSource](IEnumerable`1 source)
       source: EntitySampleWFA.Source.BO.SchoolManager.IsStandardInNotUse(Int32 standardId) c:\Users\Krkt\Desktop\VS_Projects\EntitySampleWFA\EntitySampleWFA\Source\BO\SchoolManager.cs : Line 138
Line throws Exception;
DbRawSqlQuery<Student> sts = sch.Database.SqlQuery<Student>("Select * From [SchoolSchem].[Students] Where StandardId=@StandardId;", new SqlParameter("@StandardId", standardId));
Business Object;
[Table("Students", Schema = "SchoolSchem")]
    internal class Student
        public Student()
        [Key]
        [Column("StudentId")]
        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
        public int Id { get; set; }
        [Column("StudentName")]
        [StringLength(100, MinimumLength = 10)]
        public string Name { get; set; }
        public DateTime? DateOfBirth { get; set; }
        public decimal Height { get; set; }
        public float Weight { get; set; }
        public byte[] Photo { get; set; }
        [ForeignKey("Teacher")]
        public int TeacherId { get; set; }
        public Teacher Teacher { get; set; }
        [ForeignKey("Standard")]
        public int StandardId { get; set; }
        public Standard Standard { get; set; }
Exception details are above. I think reason of exception is mapping failure at Id Property(Mapping to "StudentId" Column).
After i have changed columns as StudentId -> Id, StudentName -> Name, There is no any exception. Problem solved.
Is there another idea?

Answer 1

Hello,
try this:
http://knowledgebase.progress.com/articles/Article/9542
http://expertland.net/question/253v4r9w21mbb4l7c26u7pmws92pa91l/detail.html