Use Linq.Dynamic or Expressions to create an new anonymous object

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Use Linq.Dynamic or Expressions to create an new anonymous object



I've the following code:


public class C

public string Field get; set;
public string Data get; set;


var x = new C Field = "F", Data = "Data 1" ;
var y = new C Field = "G", Data = "Data 2" ;



And I want to cast this to an anonymous object like:


var x_a = new F = "Data 1" ;
var y_a = new G = "Data 2" ;



Note that the property name (F or G) is the content, so this can change dynamically. I'm currently using the System.Linq.Dynamic 'Select' method for this:


public static object CastToAnonymous(this C source)

var objects = new List<C>(new source).AsQueryable().Select("new (Data as " + source.Field + ")") as IEnumerable<object>;
return objects.First();




I'm wondering if there is an easier way to achieve this?





Besides the obligatory question why you want to do this (I really like to know), I don't think there's an easier way, since System.Linq.Dynamic already implements the expression parsing stuff for you, so your code is already a one-liner.
– sloth
Nov 2 '12 at 13:37


System.Linq.Dynamic





FYI, the objects you get from using Select() in the dynamic linq library are not compatible with the ones that the compiler generates. Does it really need to be a typed anonymous object? Why not just put it in a dynamic object? Use an expando object or write a dynamic wrapper.
– Jeff Mercado
Nov 2 '12 at 14:22



Select()





Why do you want to cast it to anonymous type with same fields? What do you want to do with it then?
– Kirill Bestemyanov
Nov 2 '12 at 14:46





FYI, Technically this is not a cast.
– andleer
Nov 2 '12 at 20:50





Couldn't you just place the values into a dictionary? You're making it harder than it needs to be IMHO.
– Jeff Mercado
Nov 4 '12 at 17:22









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