.NET datagridview data selection

I am sure this is straight forward but I am missing something.  Have a datagridview with many columns defined.  This function is called to step thru only the selected rows:
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Function fCopyEntries(ByVal foInDataGridView As DataGridView, ByVal fsInType As String) As Boolean

        Dim fnMaxRows As Long
        Dim fnCtr As Integer
        Dim fsNewFieldNm As String

        With foInDataGridView
            fnMaxRows = .RowCount - 1

            For fnCtr = 0 To fnMaxRows
                If .Rows.Item(fnCtr).Selected = False Then
                    Continue For
                End If

                fsNewFieldNm = .Rows.Item(fnCtr).Cells("ProjectId").Value
                MsgBox(fsNewFieldNm)
            Next
        End With

        If fnMaxRows >= 0 Then
            Return True
        Else
            Return False
        End If

End Function

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I get the error "column ProjectId not found"

What am I doing wrong?