提高Linq to Sql 性能笔记
时间：2010-12-17 来源：John Tsui
Func<LinqObjectDataContext, string, IQueryable<product>> q =
CompiledQuery.Compile<LinqObjectDataContext, string, IQueryable<product>>
((LinqObjectDataContext nw, string name) =>
from o in nw.Products
where o.ProductName==name
select o);
MSDN:http://msdn.microsoft.com/en-us/library/bb548979.aspx
3:当只需检索数据时设置 ObjectTrackingEnabled=false
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