行 101:                var propertyInform = eoc.GetType().GetProperty(EDMAssisentment.CreateEntitySetName(typeof(TEntity)), BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);行 102:                var ret = (IQueryable<TEntity>)propertyInform.GetValue(eoc, null);行 103:                return ret.Where(whereExpression).FirstOrDefault();行 104:            }行 105:        }

[COMException (0x8004d02b): 由于通信问题，MSDTC 事务管理器无法从源事务管理器提取事务。可能原因如下: 存在防火墙并且没有 MSDTC 进程的例外、两台计算机根据其 NetBIOS 名称无法找到彼此，或未对于两个事务管理器之一启用网络事务支持。 (异常来自 HRESULT:0x8004D02B)]   System.Transactions.Oletx.IDtcProxyShimFactory.ReceiveTransaction(UInt32 propgationTokenSize, Byte[] propgationToken, IntPtr managedIdentifier, Guid& transactionIdentifier, OletxTransactionIsolationLevel& isolationLevel, ITransactionShim& transactionShim) +0   System.Transactions.TransactionInterop.GetOletxTransactionFromTransmitterPropigationToken(Byte[] propagationToken) +216[TransactionManagerCommunicationException: 与基础事务管理器的通信失败。]   System.Transactions.TransactionInterop.GetOletxTransactionFromTransmitterPropigationToken(Byte[] propagationToken) +331   System.Transactions.TransactionStatePSPEOperation.PSPEPromote(InternalTransaction tx) +78   System.Transactions.TransactionStateDelegatedBase.EnterState(InternalTransaction tx) +177   System.Transactions.EnlistableStates.Promote(InternalTransaction tx) +15   System.Transactions.Transaction.Promote() +61   System.Transactions.TransactionInterop.ConvertToOletxTransaction(Transaction transaction) +46   System.Transactions.TransactionInterop.GetExportCookie(Transaction transaction, Byte[] whereabouts) +193   System.Data.SqlClient.SqlInternalConnection.GetTransactionCookie(Transaction transaction, Byte[] whereAbouts) +35   System.Data.SqlClient.SqlInternalConnection.EnlistNonNull(Transaction tx) +450   System.Data.SqlClient.SqlInternalConnection.Enlist(Transaction tx) +4848546   System.Data.SqlClient.SqlInternalConnectionTds.Activate(Transaction transaction) +4848605   System.Data.ProviderBase.DbConnectionInternal.ActivateConnection(Transaction transaction) +33   System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +1286   System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +65   System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +117   System.Data.SqlClient.SqlConnection.Open() +122   System.Data.EntityClient.EntityConnection.OpenStoreConnectionIf(Boolean openCondition, DbConnection storeConnectionToOpen, DbConnection originalConnection, String exceptionCode, String attemptedOperation, Boolean& closeStoreConnectionOnFailure) +47[EntityException: 基础提供程序在 Open 上失败。]   System.Data.EntityClient.EntityConnection.OpenStoreConnectionIf(Boolean openCondition, DbConnection storeConnectionToOpen, DbConnection originalConnection, String exceptionCode, String attemptedOperation, Boolean& closeStoreConnectionOnFailure) +168   System.Data.EntityClient.EntityConnection.Open() +96   System.Data.Objects.ObjectContext.EnsureConnection() +81   System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption) +46   System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator() +44   System.Linq.Enumerable.FirstOrDefault(IEnumerable`1 source) +203   System.Data.Objects.ELinq.ObjectQueryProvider.<GetElementFunction>b__1(IEnumerable`1 sequence) +40   System.Data.Objects.ELinq.ObjectQueryProvider.ExecuteSingle(IEnumerable`1 query, Expression queryRoot) +59   System.Data.Objects.ELinq.ObjectQueryProvider.System.Linq.IQueryProvider.Execute(Expression expression) +109   System.Linq.Queryable.FirstOrDefault(IQueryable`1 source) +269   YSGame.Platform.Framework.EntityInfrastructure.EntityBaseContext`2.Find(Expression`1 whereExpression) in F:\work\DEV\Development\trunck\Code\Framework\EntityInfrastructure\EntityBaseContext.ReadOnly.cs:103   YSGame.Platform.PersistentLayer.PassportPersistent.UserPersistent.Find(String accountName) in F:\work\DEV\Development\trunck\Code\PersistentLayer\PassportPersistent\UserPersistent.cs:83   YSGame.Platform.BizLogic.PassportBiz.AccountManagement.UserLogin(String userName, String passWord, String ip) in F:\work\DEV\Development\trunck\Code\BizLogic\PassportBiz\AccountManagement.cs:80   YSGame.Platform.BizLogic.PassportBiz.AccountManagement.UserLogin(String userName, String passWord) in F:\work\DEV\Development\trunck\Code\BizLogic\PassportBiz\AccountManagement.cs:71   YSGame.Presentation.UserControls.YSAccountLogin.btnLogin_Click(Object sender, EventArgs e) in F:\work\DEV\Development\trunck\Code\Presentation\StoreFront\WebSite\UserControls\YSAccountLogin.cs:267   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +111   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +110   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565