请问datalist有关问题
日期：2014-05-18 浏览次数：20480 次
请教datalist问题
<asp:DataList ID="DataList1" runat="server" RepeatColumns="5" RepeatDirection="Horizontal"
OnSelectedIndexChanged="DataList1_SelectedIndexChanged">
<ItemTemplate>
<table>
<tr>
<td>
<%#DataBinder.Eval(Container.DataItem,"MGood")%>
</td>
</tr>
</table>
</ItemTemplate>
</asp:DataList>
想要在列表点击MGood的项目时DataList1_SelectedIndexChanged事件返回项目的值
列表如：
A B E
E C J
点击J时返回J
------解决方案--------------------
你应该
<asp:DataList ID="DataList1" runat="server" RepeatColumns="5" RepeatDirection="Horizontal"
OnSelectedIndexChanged="DataList1_SelectedIndexChanged" DataKeyField="MGood" >
protected void DataList1_SelectedIndexChanged(object sender, EventArgs e)
{
Response.Write(DataList1.DataKeys[DataList1.SelectedIndex].ToString());
}
完整的例子
<asp:DataList ID="DataList1" runat="server" RepeatColumns="5" RepeatDirection="Horizontal"
OnSelectedIndexChanged="DataList1_SelectedIndexChanged">
<ItemTemplate>
<table>
<tr>
<td>
<%#DataBinder.Eval(Container.DataItem,"MGood")%>
</td>
</tr>
</table>
</ItemTemplate>
</asp:DataList>
想要在列表点击MGood的项目时DataList1_SelectedIndexChanged事件返回项目的值
列表如：
A B E
E C J
点击J时返回J
------解决方案--------------------
你应该
<asp:DataList ID="DataList1" runat="server" RepeatColumns="5" RepeatDirection="Horizontal"
OnSelectedIndexChanged="DataList1_SelectedIndexChanged" DataKeyField="MGood" >
protected void DataList1_SelectedIndexChanged(object sender, EventArgs e)
{
Response.Write(DataList1.DataKeys[DataList1.SelectedIndex].ToString());
}
完整的例子
- HTML code
<%@ Page Language="C#" AutoEventWireup="true" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
String[] x = { "A", "B", "C", "D", "E", "F", "G", "H", "J" };
System.Data.DataTable dataTable1 = new System.Data.DataTable();
System.Data.DataRow dr;
dataTable1.Columns.Add(new System.Data.DataColumn("ID", typeof(System.Int32)));
dataTable1.Columns.Add(new System.Data.DataColumn("MGood", typeof(System.String)));
for (int i = 0; i < 9; i++)
{
dr = dataTable1.NewRow();
dr[0] = i;
dr[1] = x[i];
dataTable1.Rows.Add(dr);
}
DataList1.DataSource = dataTable1;
DataList1.DataBind();
}
}
protected void DataList1_SelectedIndexChanged(object sender, EventArgs e)
{
Response.Write(DataList1.DataKeys[DataList1.SelectedIndex].ToString());
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
<style type="text/css">a{text-decoration:none;}</style>
</head>
<body>
<form id="form1" runat="server">
<asp:DataList ID="DataList1" runat="server" RepeatColumns="5" RepeatDirection="Horizontal"
OnSelectedIndexChanged="DataList1_SelectedIndexChanged" DataKeyField="MGood">
<ItemTemplate>
<table>
<tr><td>
<asp:LinkButton ID="lnkSelect" runat="server" CommandName="Select"><%#Eval("MGood")%></asp:LinkButton>
</td></tr>
</table>
</ItemTemplate>
</asp:DataList>
</form>
</body>
</html>
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