Using Reflection to set a Property with a type of List<CustomClass>

How can I use reflection to create a generic List with a custom class (List<CustomClass>)? I need to be able to add values and use propertyInfo.SetValue(..., ..., ...) to store it. Would I be better off storing these List<>'s as some other data structure?


I should have specified that the object is more like this, but Marc Gravell's answer works still.

class Foo
    public List<string> Bar { get; set; }


class Foo
    public string Bar { get; set; }
class Program
    static void Main()
        Type type = typeof(Foo); // possibly from a string
        IList list = (IList) Activator.CreateInstance(

        object obj = Activator.CreateInstance(type);
        type.GetProperty("Bar").SetValue(obj, "abc", null);

Here's an example of taking the List<> type and turning it into List<string>.

var list = typeof(List<>).MakeGenericType(typeof(string));

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