2016年1月11日 · linq query with or and operator together. 0. LINQ select with more than one condition using OR. 1. Linq ...

2015年4月27日 · When this is a linq-to-object call, multiple where clauses will lead to a chain of IEnumerables that read from each other. Using the single-clause form will help performance …

LINQ To Entities - examine the System.Data.Objects namespace. Especially note the ObjectContext. This is a DataAccess technology built by the ADO.NET team. It is complex, …

2011年6月2日 · Is it possible to use If Else conditional in a LINQ query? Something like from p in db.products if p.price>0 select new { Owner=from q in db.Users select q.Name } else select …

2008年8月14日 · This construct includes the 'or' part of the expression in the generated SQL query. The accepted answer will generate more efficient statements. Depending on the data …

2009年6月6日 · There's only mileage in writing the extension class if you're going to be reusing the Where In part of your linq. Upvoted the answer, but just wanted to let others who come …

2013年2月1日 · But against an SQL database, your LINQ code will be compiled into an expression tree, analysed and translated into an SQL command. This functionality has no …

This Linq query is the same as the following SQL: SELECT Items.* FROM TagMaps INNER JOIN Items ON Item.ItemId = TagMap.ItemId WHERE TagMaps.TagId IN (12,32,24) Linq takes care …

2010年9月10日 · This is how can you can do it with the noob Linq syntax. This applies the condition3 only if condition2 is false. If condition2 is true, you are essentially doing && true …

2011年3月21日 · In native LINQ you may use combination of Contains/StartsWith/EndsWith or RegExp. In LINQ2SQL use method SqlMethods.Like() from i in db.myTable where …