Repeater三级嵌套

最新推荐文章于 2020-05-08 21:23:23 发布

原创最新推荐文章于 2020-05-08 21:23:23 发布 · 263 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#Repeater

asp.net 专栏收录该内容

0 篇文章

订阅专栏

本文介绍了一种使用Repeater控件进行多级菜单数据绑定的方法，通过递归调用实现了从数据库中获取不同层级的数据，并将其显示在网页上。示例中详细展示了如何在ASP.NET中使用C#代码绑定一级、二级及更深层次的菜单。

#region Repeater绑定一级
public void Show()
{
sql = "select * from menus where parentId=0";
this.Repeater1.DataSource = ManageBLL.Sel(sql);
this.Repeater1.DataBind();
}
#endregion

#region Repeater绑定二级
protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
Repeater rep2 = e.Item.FindControl("Repeater2") as Repeater;
DataRowView rowv = (DataRowView)e.Item.DataItem;
rep2.ItemDataBound += new RepeaterItemEventHandler(Repeater2_ItemDataBound); //最最重要的一句
int id = Convert.ToInt32(rowv["Id"]);
sql = "select * from menus where parentId = " + id.ToString();
rep2.DataSource = ManageBLL.Sel(sql);
rep2.DataBind();
}
}
#endregion

#region Repeater绑定二级
protected void Repeater2_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
//AlternatingItemTemplate,FooterTemplate,HeaderTemplate,ItemTemplate,SeparatorTemplate
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
Repeater rep3 = (Repeater)e.Item.FindControl("Repeater3");//找到里层的repeater对象
DataRowView rowvv = (DataRowView)e.Item.DataItem;
int id = Convert.ToInt32(rowvv["Id"]);
sql = "select * from menus where parentId = " + id.ToString();
rep3.DataSource = ManageBLL.Sel(sql);
rep3.DataBind();
}
}
#endregion