Adding another attribute and checking value for DisplayName

This is practically the same question I posted last week about the Required Attribute but now I have another Attribute called DisplayName along with my RequiredAttribute and I want to check the Display Name I have set for it, via this attribute, and use that as my column header. I have a loop through my source data, check the attribute and set the header/column name. Can I do that in the RowDataBound like I did with the Required attribute? I tried adding another Where to the statement that was sent me but to no avail. Here is the code that fixed my Required attribute question and in bold is where I tried to add the DisplayName attribute, but its not working?

 Protected Sub GridView_RowDataBound(sender As Object, e As GridViewRowEventArgs)
        If e.Row.RowType = DataControlRowType.DataRow Then

            Dim grid = DirectCast(sender, GridView)
            Dim notRequired = (From [property] In e.Row.DataItem.GetType().GetProperties()
                            Where CType([property].GetCustomAttributes(GetType(RequiredAttribute), False), RequiredAttribute()).Count <= 0
                          [b]  'Tried adding this to check for DisplayName just like the line above it checks for Required attribute???[/b]
                            Where CType([property].GetCustomAttributes(GetType(DisplayAttribute), False), DisplayAttribute()).Count <= 0 
                            Select e.Row.DataItem.GetType().GetProperties().ToList().IndexOf([property]))

            For Each index In notRequired
                If e.Row.Cells.Count - 1 > index Then
                    e.Row.Cells(index).Visible = False
                End If

                If grid.HeaderRow.Cells.Count - 1 > index Then
                    grid.HeaderRow.Cells(index).Visible = False
                End If
            Next

        End If
    End Sub

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