c# - Generic object to generic object with Automapper -

i have problem copy generic object generic object

public class customer {     public int customerid { get; set; }     public virtual icollection<quote> quotes { get; set; } } 

i use generic class copy object object :

public static class genericautomapper {     public static void propertymap<t, u>(t source, u destination)         t : class, new()         u : class, new()     {         mapper.createmap(typeof(t), typeof(u));         mapper.map<t, u>(source); //crash here     } } 

when customer (using ef 6.1.2) , use method, on error on "crash here" line. quotes collection : '((system.data.entity.dynamicproxies.customer_ac635ad71ac95634ef9694fdc434135b488fd116f3c2b6a287846a7886521f3f)source).quotes'

i don't have problem when include : .include(x => x.quotes) in query, normal collection loaded.

is there way manage "not loaded" collection ?

thanks,

you need either turn off lazy loading or execute query before mapping; call .include() helps or need .tolist() (or similar) before applying mapping.