Question

I have been working on trying to leverage data contained in an Access Database for the last few weeks. I got to the point where I feel I should think how I will implement the design.

If I am not mistake one cannot use an Anonymous Type as a paramter to a method. This leaves me wondering what the best to return the result of a LINQ query within a method is. If you need some background information all the questions are from the last two weeks.

So this leaves me wondering someting:

Do I have to use the the var syntax when writting my query? Based on the article I read here Here I could in theory use my own class or in the examples listed on the page ( string, int, ect ).

This leads to me to the second part of my question:
If I were to say use the following syntax

IEnumerable<CustomClassHere> result = (from X in ....
where ....
**select** new CustomClassHere
{
Value = X.Field<int>("...")
}
);

Would I have able to return the result within a method that returns a IEnumerable?

I am willing to provide additional details, provide a more detailed code sample, if my current question is not clear. If you have any design suggestions that involve LINQ I would appreciate hearing them. I am looking to make this class and its interaction with the Access Database as modular as possible.

Answer 1

Sample Class

public class abc
{
    internal string str;
    internal int i;
}

---

List Collection

List<abc> List = new List<abc>();

abc Obj = new abc();
Obj.str = "1";
Obj.i = 1;
List.Add(Obj);

Obj = new abc();
Obj.str = "2";
Obj.i = 1;
List.Add(Obj);

Obj = new abc();
Obj.str = "3";
Obj.i = 1;
List.Add(Obj);

---

IEnumerable<abc> FinalList = (from lst in List select lst).ToList();

---

ResultSet

---

Sample Reference

101 LINQ SAMPLES – Very helpful to make stronghold on LINQ to Objects