Get the value of specific cell in the datagrid MVVM Model

Hello, 

 

I am stuck in getting specific cell values of a datagrid on a click of a button(This button is in every row of the datagrid --Highlighted in Yellow and i should get the value of the second column) in MVVM Pattern.

 

I have attatched the XAML and .CS file along

 

 ChangeRequest.XAML = XAML Files and there is no code behind

 ChangeRequestListViewModel.CS = ViewModel Code

ViewModelLocator.CS = This is a Locator Service code that uses simpleIOC