执行命令出错，响应超时问题。

图片说明
报错内容

An error occurred while executing the command definition. See the inner exception for details.,Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
at System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior)
at System.Data.Entity.Core.Objects.Internal.ObjectQueryExecutionPlan.ExecuteTResultType
at System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransactionT
at System.Data.Entity.Core.Objects.ObjectQuery1.<>c__DisplayClass7.<GetResults>b__5()
at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func1 operation)
at System.Data.Entity.Core.Objects.ObjectQuery1.GetResults(Nullable1 forMergeOption)
at System.Data.Entity.Core.Objects.ObjectQuery1.<System.Collections.Generic.IEnumerable<T>.GetEnumerator>b__0()
at System.Data.Entity.Internal.LazyEnumerator1.MoveNext()
at System.Collections.Generic.List1..ctor(IEnumerable1 collection)
at System.Linq.Enumerable.ToListTSource

个人认为 大概是 PPCodeList.Contains() 这里出的问题 数据量大就回有，数据量小就没有

不知道具体原因 ，求大神帮助

你的数据量有多大，能让系统超时