Repeater中嵌套Repeater的示例介绍
编程学习 2021-07-04 22:40www.dzhlxh.cn编程入门
在某些特殊情况下是需要在Repeater中嵌套使用Repeater的，狼蚁网站SEO优化有个不错的示例，感兴趣的朋友可以参考下
代码如下:
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
this.dtCategory = GetCategoryTable();
this.dtProduct = GetProductTable();
rptCategoryList.DataSource = dtCategory;
rptCategoryList.DataBind();
}
}
// 准备一张分类表
DataTable GetCategoryTable()
{
DataTable dt = new DataTable();
dt.Columns.Add("CategoryId", typeof(int));
dt.Columns.Add("CategoryTitle", typeof(string));
for (int i = 1; i <= 3; i++)
{
DataRow row = dt.NewRow();
row["CategoryId"] = i;
row["CategoryTitle"] = "分类名字 " + i + "";
dt.Rows.Add(row);
}
return dt;
}
// 准备一张产品表
DataTable GetProductTable()
{
DataTable dt = new DataTable();
dt.Columns.Add("ProductTitle", typeof(string));
dt.Columns.Add("CategoryId", typeof(int));
for (int i = 1; i <= 9; i++)
{
DataRow row = dt.NewRow();
row["ProductTitle"] = "产品名字 " + i + "";
if (i > 6) row["CategoryId"] = 3;
else if (i > 3) row["CategoryId"] = 2;
else row["CategoryId"] = 1;
dt.Rows.Add(row);
}
return dt;
}
// 获取某个类别的产品
DataTable GetProductTable(int categoryId)
{
DataView dv = this.dtProduct.DefaultView;
dv.RowFilter = " CategoryId=" + categoryId + " ";
return dv.ToTable();
}
protected void rptCategoryList_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["CategoryTitle"].ToString();
Repeater rptProductList = (Repeater)e.Item.FindControl("rptProductList");
rptProductList.DataSource = GetProductTable(Convert.ToInt32(drv["CategoryId"]));
rptProductList.DataBind();
}
}
protected void rptProductList_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["ProductTitle"].ToString();
}
}
前台aspx代码
代码如下:
<</CODE>form id="form1" runat="server">
<</CODE>div>
<</CODE>asp:Repeater ID="rptCategoryList" runat="server" OnItemDataBound="rptCategoryList_ItemDataBound">
<</CODE>ItemTemplate>
<</CODE>div class="listBox">
<</CODE>div class="title">
<</CODE>asp:Literal ID="ltlTitle" runat="server"></</CODE>asp:Literal></</CODE>div>
<</CODE>div class="content">
<</CODE>ul>
<</CODE>asp:Repeater ID="rptProductList" runat="server" OnItemDataBound="rptProductList_ItemDataBound">
<</CODE>ItemTemplate>
<</CODE>li>
<</CODE>asp:Literal ID="ltlTitle" runat="server"></</CODE>asp:Literal>
</</CODE>li>
</</CODE>ItemTemplate>
</</CODE>asp:Repeater>
</</CODE>ul>
</</CODE>div>
</</CODE>div>
</</CODE>ItemTemplate>
</</CODE>asp:Repeat</</CODE>div>
</</CODE>form>