Access the value of a member expression

Question

If i have a product.

var p = new Product { Price = 30 };

and i have the following linq query.

var q = repo.Products().Where         


        

Answer 1

If you had a class:

public class Item
{
    public int Id { get; set; }
}

and an instance of the object:

var myItem = new Item { Id = 7 };

You can get the value of Id using an Expression using the following code:

Expression> exp = x => x.Id;
var me = exp.Body as MemberExpression;
var propInfo = me.Member as PropertyInfo;
var myValue = propInfo.GetValue(myItem, null);

myValue will contain "7"