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This article mainly introduces "what is the method of compiling LINQ TO SQL query". In the daily operation, I believe that many people have doubts about the method of compiling LINQ TO SQL query. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts of "what is the method of compiling LINQ TO SQL query?" Next, please follow the editor to study!

For example, we often need to retrieve by city and then output a list of customers, and we can compile the statement in advance, as defined below

Public static Func > CustomersByCity = CompiledQuery.Compile ((Model.NorthwindDataContext db, string city) = > from c in db.Customers where c.City = = city select c); / / compile a certain type of query, City can be changed, but the query can be reused

Then, where we really want to use it, we can call it like this

Gv.DataSource = CustomersByCity (new Model.NorthwindDataContext (), "Berlin"). Take (10); gv.DataBind ()

This allows you to improve LINQ TO SQL performance as much as possible

At this point, the study of "what is the method of compiling LINQ TO SQL queries" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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