Repeater使用方法---基础数据绑定+多级嵌套
一、基础数据绑定
Repeater控件在编译后不会生成任何多余的代码，而GridView等编译后会生成table标签，这样对于页面的负担和UI样式影响方面，使用Repeater就会显得很有优势了。下面简单说明一下Repeater绑定数据库的方法。
效果图：
说明：只有男性可以执行删除功能。
前台代码如下：
<head runat="server">
<title>员工管理title>
<link href="staffCSS.css" rel="stylesheet" type="text/css" />
head>
<body>
<form id="form1" runat="server">
<div class="divContent">
<div class="dtcss">
<p class="dt_p">
编号p>
<p class="dt_p">
姓名p>
<p class="dt_p">
性别p>
<p class="dt_p">
部门p>
<p class="dt_p">
操作p>
div>
<asp:Repeater ID="repStaff" runat="server" OnItemCommand="repStaff_ItemCommand"
onitemdatabound="repStaff_ItemDataBound">
<ItemTemplate>
<p class="dt_p">
<asp:Label ID="lblID" runat="server" Text='<%#Eval("id")%>'>asp:Label>p>
<p class="dt_p">
<asp:Label ID="lblName" runat="server" Text='<%#Eval("staffName")%>'>asp:Label>p>
<p class="dt_p">
<asp:Label ID="lblSex" runat="server" Text='<%#Convert.ToBoolean(Eval("sex"))?"女":"男"%>'>asp:Label>p>
<p class="dt_p">
<asp:Label ID="lblDepartment" runat="server" Text='<%#Eval("departmentName") %>'>asp:Label>p>
<p class="dt_p">
<asp:LinkButton ID="update" CommandName="update" runat="server" PostBackUrl='<%#"ModefyStaff.aspx?id="+Eval("staffid")%>'
Text="编辑">asp:LinkButton>
<asp:LinkButton ID="delete" CommandName="delete" runat="server" CommandArgument='<%#Eval("staffid") %>'
OnClientClick="javascript:return confirm('确认删除此信息吗？')" Text="删除">asp:LinkButton>p>
ItemTemplate>
asp:Repeater>
div>
form>
body>其中staffCSS.css样式表如下：
body
{
text-align:center;
}
.divContent
{
width:700px;
text-align:left;
font-size:12px;
}
.divContent p:hover
{
background-color:Orange;
}
.dt_p
{
width:18%;
float:left;
height:20px;
}
.dtcss
{
background-color:Lime;
width:100%;
line-height:20px;
height:20px;
}后台代码：
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindStaff();
}
}
//绑定数据
private void BindStaff()
{
string connstr = "Data Source=.;Initial Catalog=RepeaterSummary;User ID=sa;Password=123456;";
SqlConnection conn = new SqlConnection(connstr);
if (conn.State == System.Data.ConnectionState.Closed)
conn.Open();
string sqlstr = @"select ROW_NUMBER() over(order by s.id) id,s.id as staffid,s.staffName,s.sex,d.departmentName from Staff s,Department d
where s.departmentid=d.id";
SqlDataAdapter sda = new SqlDataAdapter(sqlstr, conn);
DataSet ds = new DataSet();
sda.Fill(ds);
ds.Dispose();
conn.Close();
if (ds != null)
{
this.repStaff.DataSource = ds;
this.repStaff.DataBind();
}
}
//生成事件时触发
protected void repStaff_ItemCommand(object source, RepeaterCommandEventArgs e)
{
if (e.CommandName=="update")
{
//跳转至修改页面
}
if (e.CommandName == "delete")
{
int id =Convert.ToInt32(e.CommandArgument);
string connstr = "Data Source=.;Initial Catalog=RepeaterSummary;User ID=sa;Password=123456";
SqlConnection conn = new SqlConnection(connstr);
if (conn.State==System.Data.ConnectionState.Closed)
{
conn.Open();
}
string sqlstr = "delete from Staff where id=" + id;
SqlCommand comm = new SqlCommand(sqlstr, conn);
int delInt = comm.ExecuteNonQuery();
if (delInt > 0)
BindStaff();
}
}
//数据绑定时触发
protected void repStaff_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
Label lblsex = (Label)e.Item.FindControl("lblSex");
LinkButton lbupdate = (LinkButton)e.Item.FindControl("update");
LinkButton lbdelete = (LinkButton)e.Item.FindControl("delete");
if (lblsex!=null)
{
if (lblsex.Text.Trim() == "女")
{
lbupdate.Visible = false;
//lbdelete.Visible = false;
}
}
}
}二 、多级嵌套
如果数据展示需要现实父子孙等多级关系，如图:
需要两个或多个Repeater嵌套使用，使用方法是：
前台代码定义时，在父Repeater内部定义子Repeater，子Repeater内部定义孙Repeater。如代码：
<asp:Repeater ID="parentRepeater" runat="server" OnItemDataBound="parentRepeater_ItemDataBound">
<ItemTemplate>
<dl id="dlrepeater">
<dt>
<%-- 可以在这里绑定父节点的ID，绑定子Repeater时，需要根据这个ID来查--%>
<asp:HiddenField ID="hfid" runat="server" Value=' <%#Eval("id")%>' />
<asp:CheckBox ID="cbParent" runat="server" Text=' <%#Eval("MenuName")%>' onclick="javascript:FormSelectAll('form1','cbChild',this);" />
dt>
<asp:Repeater ID="childRepeater" runat="server" OnItemDataBound="childRepeater_ItemDataBound">
<ItemTemplate>
<dd>
<%--同理，绑定子节点的ID，供孙子Repeater查询绑定时用--%>
<asp:HiddenField ID="hfidchild" runat="server" Value=' <%#Eval("id")%>' />
<asp:CheckBox name="cbChild" ID="cbChild" runat="server" Text=' <%#Eval("MenuName")%>'
CssClass="abcd" onclick="javascript:FormSelectAllGrant('form1','cbGrantchild',this);" />
dd>
<asp:Repeater ID="grantchildRepeater" runat="server">
<ItemTemplate>
<dd>
<asp:HiddenField ID="hfidgrantchild" runat="server" Value=' <%#Eval("id")%>' />
<asp:CheckBox name="cbGrantchild" ID="cbGrantchild" runat="server"
Text=' <%#Eval("MenuName")%>' CssClass="abcd" />
dd>
ItemTemplate>
asp:Repeater>
ItemTemplate>
asp:Repeater>
dl>
ItemTemplate>
asp:Repeater>
绑定数据时，在父Repeater的ItemDataBound事件中绑定子Repeater,在子Repeater的ItemDataBound事件中绑定孙Repeater。如代码：
//绑定父Repeater时触发
protected void parentRepeater_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
HiddenField hf = (HiddenField)e.Item.FindControl("hfid");
Repeater rpchild = (Repeater)e.Item.FindControl("childRepeater");
if (hf != null || hf.ToString() != "")
{
int id = Convert.ToInt32(hf.Value);
rpchild.DataSource = BLLmenu.GetMenuChild(id);//根据父节点id查询子节点
rpchild.DataBind();
}
}
}
//绑定子Repeater时触发
protected void childRepeater_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
HiddenField hf = (HiddenField)e.Item.FindControl("hfidchild");
Repeater rpgrantchild = (Repeater)e.Item.FindControl("grantchildRepeater");
if (hf != null || hf.ToString() != "")
{
int id = Convert.ToInt32(hf.Value);
rpgrantchild.DataSource = BLLmenu.GetMenuChild(id);//根据父节点id查询子节点
rpgrantchild.DataBind();
}
}
}原文地址：http://www.cnblogs.com/yinluhui0229/archive/2012/08/18/2644944.html