public class Program {

    public static void Main() {

        var myClassObject = new MyClass() { Prop1 = "Teste", Prop2 = 10, FieldArray = new Field<dynamic>[2] { new Field<dynamic>("f1", "v1"), new Field<dynamic>("f1", 1) } };

    }

}

​

public class Field<TValue> {

    public string Name { get; set; }

    public TValue Value { get; set; }

​

    public Field() {}

​

    public Field(string name, TValue value) {

        this.Name = name;

        this.Value = value;

    }

}

​

public class MyClass {

    public string Prop1 { get; set; }

    public int Prop2 { get; set; }

    public Field<dynamic>[] FieldArray { get; set; }

}