Dynamic Where Clause over relational tables with LINQ to SQL

Question

I need help for a dynamic where clause over relational tables (one to many) in LinqToSql.

User select conditions from page. (there is 4 input that u

Answer 1

Check out ScottGu's blog on the dynamic linq library. I think it will help.

Here is an example of a query that hits both the customers and orders table:

    var query =
    db.Customers.
    Where("City = @0 and Orders.Count >= @1", "London", 10).
    OrderBy("CompanyName").
    Select("new(CompanyName as Name, Phone)");
    

The query above came from the C# samples for Visual Studio. Download and look in the \LinqSamples\DynamicQuery folder and you will find more examples.