C# :: How To Format Display For GridColumn Bound To Object

The data source of my grid is a list. Lets call the list list<objectX> listC where objectX is the type. objectX looks like this (this file cannot be edited):

public string otherProp1 { get; set; }
public double otherProp2 { get; set; }
public TimeFrameV endTimeframe { get; set; }
public double otherProp3 { get; set; }

[Code]....

I have 4 columns bound to fields in objectX. Two of which is bound to TimeFrameV objects. Initially endTimeframe and startTimeframe were strings, but not anymore. I have been using "FieldName" property to bind the fields.

I want to access all three fields in TimeFrameV. I have a method FormatTimeFrame(TimeFrameV timeFrame) that takes TimeFrameV object as a parameter and returns the desired string result depending on the variable values in the object. Here is what I want, i want/need to somehow pass Fieldname property value. But it's a string and I am not sure if I can parse into int TimeFrameV object.