Hide <asp:HyperLink if user not logged within Gridview

The following code helped me hide asp hyperlinks if user is not logged in. I do not code very very if at all. My problem is I need to do the same thing within a GridView Control. I don't know the syntax well enough or the arguments to modify the code. Could someone help me changed the code to perform the same functionality with with a GridView:

Protected Sub ListView1_ItemDataBound(ByVal sender As Object, ByVal e As ListViewItemEventArgs) Handles ListView1.ItemDataBound
        If e.Item.ItemType = ListViewItemType.DataItem Then
            If Not User.Identity.IsAuthenticated Then
                Dim h As HyperLink = DirectCast(e.Item.FindControl("HyperLink1"), HyperLink)
                Dim i As HyperLink = DirectCast(e.Item.FindControl("HyperLink30"), HyperLink)
                Dim j As HyperLink = DirectCast(e.Item.FindControl("HyperLink2"), HyperLink)
                If h IsNot Nothing Then
                    h.Visible = False
                End If
                If i IsNot Nothing Then
                    i.Visible = False
                End If
                If j IsNot Nothing Then
                    j.Visible = False
                End If
            End If
        End If
    End Sub

I made an attempt to modify the code but I am not sure if the syntax will even work. It definitely won't compile:
-------------------------------------------------------------My failed attempt below
Protected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs) Handles GridView1.RowDataBound
        If e.Row.RowType = DataControlRowType.DataRow Then
            If Not User.Identity.IsAuthenticated Then
                Dim h As HyperLink = DirectCast(DataControlRowType.DataRow("HyperLink1"), HyperLink)
                Dim i As HyperLink = DirectCast(e.Item.FindControl("HyperLink30"), HyperLink)
                Dim j As HyperLink = DirectCast(e.Item.FindControl("HyperLink2"), HyperLink)
                If h IsNot Nothing Then
                    h.Visible = False
                End If
                If i IsNot Nothing Then
                    i.Visible = False
                End If
                If j IsNot Nothing Then
                    j.Visible = False
                End If
            End If
        End If
    End Sub