Repeater怎么实现多行间隔显示分隔符

代码如下:

protected void Page_Load(object sender, EventArgs e) 
{ 
if (!Page.IsPostBack) 
{ 
rptList.DataSource = GetTable(); 
rptList.DataBind(); 
} 
} 
protected void rptList_ItemDataBound(object sender, RepeaterItemEventArgs e) 
{ 
if (e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType == ListItemType.Item) 
{ 
DataRowView drv = (DataRowView)e.Item.DataItem; 
Literal ltlTitle = (Literal)e.Item.FindControl("ltlTitle"); 
ltlTitle.Text = drv.Row["title"].ToString(); 
if ((e.Item.ItemIndex + 1) % 5 == 0 && (e.Item.ItemIndex + 1) < 15) 
{ 
System.Web.UI.LiteralControl ul = new LiteralControl(" 
"); 
e.Item.Controls.Add(ul); 
} 
} 
} 
DataTable GetTable() 
{ 
DataTable dt = new DataTable(); 
dt.Columns.Add("title", typeof(string)); 
for (int i = 1; i <= 15; i++) 
{ 
DataRow row = dt.NewRow(); 
row["title"] = "这是文章标题 " + i + ""; 
dt.Rows.Add(row); 
} 
return dt} 

<</CODE>form id="form1" runat="server"> 
<</CODE>div> 
<</CODE>asp:Repeater ID="rptList" runat="server" 
onitemdatabound="rptList_ItemDataBound"> 
<</CODE>HeaderTemplate> 
<</CODE>ul> 
</</CODE>HeaderTemplate> 
<</CODE>ItemTemplate> 
<</CODE>li> 
<</CODE>asp:Literal ID="ltlTitle" runat="server"></</CODE>asp:Literal></</CODE>li> 
</</CODE>ItemTemplate> 
<</CODE>FooterTemplate> 
</</CODE>ul></</CODE>FooterTemplate> 
</</CODE>asp:Repea</</CODE>form>