使用其中的某个字段分组,然后按该字段进行排序。该需求分别使用LinQ to SQL和non-LinQ的方式实现,然后来看一下performance对比。 LinQ way LinQ way for group non-LinQ way non-LinQ way for group 从 varresults =newSortedDictionary<long?, IList<Part_Part>>(); 可以看出,用来排序的字段类型为long?。先看...
这两种写法哪一种更快呢,事实证明第二个语句比第一个要快得多http://blogs.msdn.com/ricom/archive/2007/06/29/dlinq-linq-to-sql-performance-part-3.aspx 为什么呢? 因为在第一个查询中查询出的每一个对象都需要存储在DataContext中,并对他们做可能会发生变化的跟踪,而在第二个查询中你生命了一个新的对象...
In complex queries that make multiple connections to the database and have to translate the LINQ code to SQL for each query appear to cause some performance issues. The performance of calling stored procedures and stored functions from LINQ is not that much different from the data layer query. ...
LINQ to SQLIn LINQ to SQL it becomes metod as you drag and drop it to .dbml file,using (NorthwindDataContext db = new NorthwindDataContext()){var outPut = db.SalesByCategory("SeaFood", "1998");}Performance of LINQ to SQL and ADO.NET...
In short, if you expect to reuse the query at all, there is no performance related reason not to compile it. Comments Anonymous January 14, 2008 PingBack fromhttp://geeklectures.info/2008/01/14/performance-quiz-13-linq-to-sql-compiled-query-cost-solution/ ...
Click on it to pop up the debug visualizer which shows you the T-SQL that will be executed. You can edit as you see fit, but if you read my post on LINQ performance you'll know that the out of the box performance is pretty good....
(You could also use Reflection to get and set the TrackingState property, but a generic type constraint will provide both type safety and better performance.) Enter the ITrackable interface, which has just one member, the TrackingState property: C# Copy public interface ITrackable { Tracking...
意見 Noticias externas 2008年1月14日 Check it out and see if you know the answer. Rico's Performance Tidbits...( read more ) LINQ in Action roller 2008年1月14日 Check it out and see if you know the answer. Rico's Performance Tidbits...( read more )...
Boosting the Performance of the Microsoft .NET Framework Building Connected Systems: The .NET Framework and the Microsoft Enterprise Application Development Platform C#: A Message Queuing Service Application C#: A SQL Server XML and ASP.NET Runtime Application ...
Performance of foreach loops vs. LINQThanksAll replies (2)Wednesday, November 2, 2011 9:16 AM ✅Answered | 1 voteHi,LINQ is also calling foreach to loop, it is a extention method with IEnumerable type which records in memory.If you are doing LINQ to SQL or Entity Framework, the ...