Access class fields by field name of custom object [duplicate]

I've named textboxes in my UI the same as the field-names in the 'Stuff' class below, I'm iterating over the controls and trying to populate them programmatically with the respective fields from Stuff-

I did search, extensively. But the line below (gettype.getproperty.getvalue[stuff,null]) has never returned a value, at all. It just keeps crashing out as null- I found this line here on Stack

foreach (Control c in gbInfo.Controls) {
    if (c.Name.StartsWith("tb")) {

        string fieldIWantToAccess = c.Name.Substring(2); //removes the tb from tbWeAllAre

        // it's this line below that's giving me issues- I'm just looking for a simple
        // way to accomplish this. Back in the perl days it was just:
        // $name = "IsNerd"; c.Text = $$name;
        c.Text = stuffObj.GetType().GetProperty(fieldIWantToAccess).GetValue(Stuff, null);

        }
    }

public class Stuff {
    public string Name;
    public string Age;
    public string IsNerd;
    public string WeAllAre;
    }

In my actual code, 'Stuff' has about 2 dozen public strings, and there's a large array of TextBox controls on the UI that I'd like to populate this way.. Rather than doing them all individually.