Store list of hyperlinks - asp.net

Question

I have an aspx page that contains a grid-view. The data-source for the gird-view is a datatable.
I want the last column in the grid view to contain a list of hyperlinks. I cannot figure out how to store or display this data
private void retrieveGroups()
{
// UserTab is a DataTable
// UserGrid is a GridView
UserTab.Columns.Add("LoginName", typeof(string));
UserTab.Columns.Add("DisplayName", typeof(string));
UserTab.Columns.Add("Kind", typeof(string));
UserTab.Columns.Add("Count", typeof(string));
UserTab.Columns.Add("Managers", typeof(string));
UserGrid.DataSource = UserTab;
SqlCommand cmd = FmaDb.makeCmd(FmaDb.SubDB.FMA_CUSTOMER, "fetchGroupIds", CommandType.StoredProcedure,
delegate(SqlCommand inCmd) { inCmd.Parameters.Add("#siteid", SqlDbType.Int); });
List<int> groupIds = new List<int>();
FmaDb.runReadCmd(cmd, delegate(SqlCommand inCmd) { inCmd.Parameters["#siteid"].Value = int.Parse(LFList.SelectedItem.Value); }, null,
delegate(SqlDataReader qrdr) { groupIds.Add(FmaDb.getDbInt(qrdr, 0)); });
UserGrid.Visible = true;
HyperLinkField hf = new HyperLinkField();
BoundField bf = new BoundField();
hf.HeaderText = "Login";
hf.DataTextField = "LoginName";
hf.DataNavigateUrlFields = new String[1] { "login" };
hf.DataNavigateUrlFormatString = "~/fausage.aspx?cn=login&lg={0}&ad=" + ad + "&as=" + aStatus;
UserGrid.Columns.Add(hf);
bf = new BoundField();
bf.HeaderText = "Name";
bf.DataField = "DisplayName";
UserGrid.Columns.Add(bf);
bf = new BoundField();
bf.HeaderText = "Type";
bf.DataField = "Kind";
UserGrid.Columns.Add(bf);
bf = new BoundField();
bf.HeaderText = "# Members";
bf.DataField = "Count";
UserGrid.Columns.Add(bf);
bf = new BoundField();
bf.HeaderText = "Managers";
bf.DataField = "Managers";
UserGrid.Columns.Add(bf);
foreach (int gId in groupIds)
{
Advisor advGroup = new Advisor(gId);
List<HyperLink> linkList = new List<HyperLink>();
advGroup.fetch();
if ((advGroup.Kind == AdvisorKind.Branch) || (advGroup.Kind == AdvisorKind.Team))
{
List<AdvisorMembership> members = advGroup.MyMembers(null, false);
if (advGroup.Kind == AdvisorKind.Branch)
{
List<AdvisorMembership> mgrs = advGroup.MyMembers(null, true);
HyperLink link;
foreach (AdvisorMembership m in mgrs)
{
if (m.MemberCanLoginAsContainer)
{
link = new HyperLink();
link.Text = m.Member.LoginName;
link.NavigateUrl = "~/fausage.aspx?cn=login&lg=" + m.Member.LoginName + "&ad=" + ad + "&as=" + aStatus;
link.Target = "blank";
linkList.Add(link);
}
}
}
UserTab.Rows.Add(advGroup.LoginName, advGroup.DisplayName, advGroup.Kind.ToString(), members.Count.ToString(), linkList);
}
ViewState["DataTable"] = UserTab;
}
}
}
}