c# - Expression<Func<T1, T2, TResult>> and Sql IN -

i want use expression trees make filters entity framework.

so types

public class type1 {     public string name { get; set; } }  public class type2 {     public ienumerable<string> names { get; set; } }

and specification

public expression<func<entities.type1, bool>> myexpression(type2 filter) {     //something name in (name[0], name[1], ... name[n]) }

i need transform in sql in.

how can it, , what's best form?

how can make entity framework understand arbitrary expression in way want?

you can this:

public expression<func<type1, bool>> myexpression(type2 filter) {     return x => filter.names.contains(x.name); }

Ben