DataList里嵌套一个ImageButton和label ,点击ImageButton如何取label的值？

chkmouse 2009-03-25 09:28:45

DataList里嵌套一个ImageButton和label ,点击ImageButton如何取label的值？

.Aspx文件
------------------------------------------------------------------------------------------------------------------------------------------------
<asp:DataList ID="dlstnews" runat="server">
<ItemTemplate>

<asp:Label ID="lblName" runat="server" Text='<%#Eval("name")%>'></asp:Label> //Label标签,Text属性绑定数据库一列"name"
<asp:ImageButton ID="ibtnBuy" runat="server" ImageUrl="~/buy.jpg" onclick="ibtnBuy_onclick" /> //ImageButton按钮,单击事件ibtnBuy_onclick

</ItemTemplate>
</asp:DataList>
------------------------------------------------------------------------------------------------------------------------------------------------

.Aspx.cs文件
------------------------------------------------------------------------------------------------------------------------------------------------
protected void ibtnBuy_onclick(object sender, EventArgs e) //响应前台的ImageButton事件
{
Response.Write("OK"); //没问题, 如何获取前台lblName.Text的属性值呀？
}
------------------------------------------------------------------------------------------------------------------------------------------------

...全文

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jinianjun 2011-02-18

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小弟的imagebutton控件的事件怎么点击没有反应啊，急死了都，网上也找不到答案

jmtbai 2009-04-08

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你这里的代码是二者选其一还是一起用啊？

chkmouse 2009-03-25

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<asp:DataList>
<ItemTemplate>
<asp:ImageButton ID="ibtnBuy" runat="server" CommandName="GetData" ImageUrl="~/buy.jpg" onclick="ibtnBuy_Click" /> //单击触发后台ibtnBuy_Click()事件
</ItemTemplate>
</asp:DataList>

protected void dlsthot_ItemCreated(object sender, DataListItemEventArgs e) //DataList的ItemCreated事件
{
if (e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType == ListItemType.Item)
{
ImageButton ibtnBuy = e.Item.FindControl("ibtnBuy") as ImageButton; //Label标签的标签名
ibtnBuy.OnClientClick += new EventHandler(ibtnBuy_Click); //关联单击事件
}
}

protected void ibtnBuy_Click(object sender, EventArgs e) //前台ImageButton的单击事件
{
ImageButton button = (ImageButton)sender;
DataListItem dli = (DataListItem)button.Parent;
int index = dli.ItemIndex; //ImageButton所在的DataList索引 (DataList的第几个数据)
Label lbl = this.dlsthot.Items[index].FindControl("lblName") as Label;
Response.Write(lbl.Text);
}

问题解决,感谢ls的回答，感谢色犬

chkmouse 2009-03-25

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protected void datalist1_ItemCommand(object source, DataListCommandEventArgs e)
{
if (e.CommandName = "GetDate")
{
Label lb = e.Item.FindControl("Label1") as Label;
Response.Write(lb.Text);
}
} //单击ImageButton没有任何反应调试根本不走代码

如果不添加commandName,可以用添加行的索引CommandArgument=' <%# Container.DataItemIndex %>'来实现
然后直接在按钮click事件底下写 //CommandArgument=' <%# Container.DataItemIndex %>',出错说找不到DataItemIndex ，如果改成<%#Eval("id")%> ID列不一定是准确依次排序的行索引如1 2 3 4 5 6 这样
protected void ibtnBuy_onclick(object sender, EventArgs e) //响应前台的ImageButton事件
{
Label lb=dl.Items[Convert.ToInt32(e.CommandArgument)].FindControl("Label1") as Label;
response.write(lb.text);
}

lonelySurvive 2009-03-25

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首先把ImageButton上添加个cmonnandName
<asp:ImageButton ID="ibtnBuy" runat="server" CommandName="GetData" ImageUrl="~/buy.jpg" onclick="ibtnBuy_onclick"/>

然后在datalist的ItemCommad事件底下写

protected void datalist1_ItemCommand(object source, DataListCommandEventArgs e)
{
if (e.CommandName = "GetDate")
{
Label lb = e.Item.FindControl("Label1") as Label;
Response.Write(lb.Text);
}
}

如果不添加commandName,可以用添加行的索引CommandArgument='<%# Container.DataItemIndex %>'来实现
然后直接在按钮click事件底下写
protected void ibtnBuy_onclick(object sender, EventArgs e) //响应前台的ImageButton事件
{
Label lb=dl.Items[Convert.ToInt32(e.CommandArgument)].FindControl("Label1") as Label;
response.write(lb.text);
}

基本思路就是嵌套在向gridview，repeater ,datalist这类控件里面的控件，要根据行或者项来findcontrol

lonelySurvive 2009-03-25

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上午不好意思，我写的代码没调试过，凭感觉写的，你一说才发现是有问题，



using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;



public partial class Default3 : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {



    }

    protected void DataList1_ItemCommand(object source, DataListCommandEventArgs e)

    {

        if (e.CommandName == "GetData")

        {

            //e.Item.ItemIndex

            Label lb=e.Item.FindControl("Label1") as Label;

            Response.Write(lb.Text);



        }



    }

    protected void LinkButton1_Click(object sender, EventArgs e)

    {

        LinkButton lb = (LinkButton)sender;

        DataListItem dli = (DataListItem)lb.Parent;

        Response.Write(((Label)dli.FindControl("Label1")).Text);

    }

}



<%@ Page Language="C#" AutoEventWireup="true" CodeFile="回答CSDN上的问题.aspx.cs" Inherits="Default3" %>



<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">



<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

    <title>无标题页</title>

</head>

<body>

    <form id="form1" runat="server">

    <div>

        <asp:DataList ID="DataList1" runat="server" OnItemCommand="DataList1_ItemCommand" DataSourceID="SqlDataSource1">

            <ItemTemplate>

                <asp:Label ID="Label1" runat="server" Text='<%# Eval("employeeId") %>'></asp:Label>

                <asp:LinkButton ID="LinkButton1" runat="server" Text='<%# Eval("firstName") %>' CommandName="GetData" OnClick="LinkButton1_Click"/>

            </ItemTemplate>

        </asp:DataList></div>

        <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="Data Source=.;Initial Catalog=Northwind;Integrated Security=True"

            ProviderName="System.Data.SqlClient" SelectCommand="SELECT [EmployeeID], [FirstName] FROM [Employees]">

        </asp:SqlDataSource>

    </form>

</body>

</html>