Dynamic class creation

Question

Is is possible in runtime create class from DataTable where ColumnName will be dynamic class properties?

Answer 1

Yes (using Reflection.Emit), but it's a bad idea.
What are you trying to do?

Answer 2

Reading your comments, I undestood your mean. Just use Generics: using List fields to generate the objects. The code is quite simple:

public class DynClass<T, P>
    {
        public DynClass()
        {
            _fields = new Dictionary<T, P>();
        }

        private IDictionary<T, P> _fields;

        public IDictionary<T, P> Fields
        {
            get { return _fields; }
        }

    }

    public class TestGenericInstances
    {
        public TestGenericInstances()
        {
            Client cli = new Client("Ash", "99999999901");

            /* Here you can create any instances of the Class. 
             * Also DynClass<string, object>
             * */
            DynClass<string, Client> gen = new DynClass<string, Client>();

            /* Add the fields
             * */
            gen.Fields.Add("clientName", cli);

            /* Add the objects to the List
             * */
            List<object> lstDyn = new List<object>().Add(gen);
        }        
    }

Answer 3

If you have C# 4 you can make use of the new dynamics feature and the ExpandoObject. You can read a tutorial about it here.

Answer 4

With C# 4, you can do this

dynamic foo = new ExpandoObject();

// mimic grabbing a column name at runtime and adding it as a property
((IDictionary<string, object>)foo).Add("Name", "Apple");

Console.WriteLine(foo.Name); // writes Apple to screen

Not recommending it or anything, but it shows you it is possible.