Question

I have a type that accepts these parameters:

public SmaSeries(ISeries<decimal> parent, int periods, TierKind? runOnTier = null) 

I am trying to create an instance of this type using Activator.CreateInstance (the overload that accepts type and args) by passing object[] in the args parameter:

 new object[] 
 {
    new DecimalSeries(),
    20,
    new Nullable<TierKind>(TierKind.Client)
 }

//DecimalSeries implements ISeries<decimal>

Getting back Constructor on type ‘SmaSeries’ not found.

Is there a way to fix the args so the activator finds the constructor?

Thanks.

Answer 1

Works fine in .NET 4.5, and even 2.0

using System;

class SmaSeries
{
    public SmaSeries(ISeries<decimal> parent, int periods,
         TierKind? runOnTier = null) { }
    static void Main()
    {
        object[] args = new object[] 
         {
            new DecimalSeries(),
            20,
            new Nullable<TierKind>(TierKind.Client)
         };

        object obj = Activator.CreateInstance(typeof(SmaSeries), args);
    }
}
enum TierKind { Client }
interface ISeries<T> { }
class DecimalSeries : ISeries<decimal> { }

I think perhaps: is your constructor or one of the types maybe not public?