IEnumerable does not allow access to sub items

Question

To make a long story short. I have the following code:

class MyList : IEnumerable
{
    private List<string> T1 = new List<string>();
    private List<string> T2 = new List<string>();
    private List<string> T3 = new List<string>();
    public List<string> Name { set { T1 = value; } get { return T1; } }
    public List<string> DataType { set { T2 = value; } get { return T2; } }
    public List<string> Nullable { set { T3 = value; } get { return T3; } }
    IEnumerator IEnumerable.GetEnumerator()
    {
        return (IEnumerator)GetEnumerator();
    }
    public MyList<List<string>, List<string>, List<string>> GetEnumerator()
    {
        return new MyList<List<string>, List<string>, List<string>>(T1, T2, T2);
    }
}

What I want is to access it like this:

       MyList ml = new MyList();
       foreach (var item in ml)
       {
           str = item.Name;
       }

It does not let me access the subitem, like item.Name, or item.DataType.

Answer 1

It seems you are trying to make a list of things, each of which has 3 properties: Name, DataType, Nullable. Try this:

class MyItem 
{
    public string Name { get; set; }
    public string DataType { get; set; }
    public string Nullable { get; set; }  // also, consider making this bool
}

Then make a list of those.

Answer 2

Based on the answer from @CSJ, I would suggest:

public class MyItem 
{
    public string Name { get; set; }
    public string DataType { get; set; }
    public string Nullable { get; set; }  // also, consider making this bool
}

public class MyItemList : IEnumerable<MyItem>
{
    private List<MyItem> MyItems = new List<MyItem>();

    public IEnumerator<MyItem> GetEnumerator()
    {
        return this.MyItems.GetEnumerator();
    }

    System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
    {
        return GetEnumerator();
    }
}