Question

Using dynamic linq (http://weblogs.asp.net/scottgu/archive/2008/01/07/dynamic-linq-part-1-using-the-linq-dynamic-query-library.aspx) I run the query below which returns an IQueryable. On this result which is also an IEnumerable I am able to run a Count() however there is not ToList() to get the values. I can enumerate over them using a foreach but am not able to access the individual fields in the resultant anonymous type without reflection. Is this the only way? Thanks

var query =                 db.Customers.Where('City == @0 and Orders.Count >= @1', 'London', 10).                 OrderBy('CompanyName').                 Select('New(CompanyName as Name, Phone)');              foreach (var item in query)             {                 foreach (var prop in item.GetType().GetProperties())                 {                     Console.WriteLine(prop);                 }             } 

Tried casting but got an error Unable to cast object of type ‘DynamicClass1’ to type ‘Test’.

 foreach (var item in query)             {                 Console.WriteLine('{0}: {1}', ((Test)item).CompanyName, ((Test)item).Phone);             }  public class Test {             public string CompanyName { get; set; }             public string Phone { get; set; } 

}

Answer 1

You can’t expect the type of you dynamic object to be resolved at compile time when your query is resolved at runtime. That’s what dynamic linq is all about : it allows you to execute dynamic queries at the cost compile-time checking.

You have to use reflection to access properties of a dynamic type, at least until C# 4.