Urgent :: How can I add a row with respect dynamic column collection

Question

WPF : Urgent

I have GridView inside ListView.
I have column name collection.
My column collection comes from XML which is dynamically loaded. & From this XML I get Column Collection.(This column count can be changed).

I can add columns dynamically using runtime datatemplate.

But problem is that. how can I add a row with respect collection of columns.

How to runtime decide to add row.