Get Gridview Column Name With Autogenerate Equals To True

I am trying to retrieve a column name from an autogenerated gridview. I want to test for a field name (if FieldName = "whatever" then do something) The major problem is that indexes and field names are all sort of locked away when you auto generate your gridview (autogenerate = true) Unfortunately since I am using the gridview to display the results of different queries (different number of columns and column types) changing auto generate is not an option.

The question is, based on what I have got so far how would I capture a field/column name. I figured out how to get the column index but am stuck on the column name.

Code:
Protected Sub GridViewList_RowDataBound(ByVal sender As Object, _
ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) _
Handles GridViewList.RowDataBound

Dim vColumnCnt As Integer = -1
For Each vCell As TableCell In e.Row.Cells 'GridViewList.Rows(0).Cells
vColumnCnt = vColumnCnt + 1
Next

e.Row.Cells(vColumnCnt).Text = Server.HtmlDecode(e.Row.Cells(vColumnCnt).Text)
End Sub