I am trying to figure out how to call a class method on a property of that class. Here are my two classes:

```
public class MrBase
{
    public int? Id { get; set; }
    public String Description { get; set; }
    public int? DisplayOrder { get; set; }

    public String NullIfEmpty()
    {
        if (this.ToString().Trim().Equals(String.Empty))
            return null;
        return this.ToString().Trim();
    }
}

public class MrResult : MrBase
{
    public String Owner { get; set; }
    public String Status { get; set; }

    public MrResult() {}
}

```

MrResult inherits from MrBase.

Now, I want to be able to call the NullIfEmpty method on any of the properties of these classes... like so:

```
MrResult r = new MrResult();
r.Description = "";
r.Description.NullIfEmpty();
r.Owner = "Eric";
r.Owner.NullIfEmpty();

```

Thanks.

Eric