如何在代码隐藏的Listview中访问特定标签的ID [英] How Can I Access The Id Of Specific Label In Listview In Code Behind

问题描述

如何在后面的代码中访问listview中特定标签的id以获取其值

解决方案

尝试这样..

 受保护  void  ListView1_ItemDataBound（< span class =code-keyword> object  sender，ListViewItemEventArgs e）
 {
  if （e.Item.ItemType = = ListViewItemType.DataItem）
 {
 Label lbl = e.Item.FindControl（  yourLabelName ） as 标签; 
 lbl.Text =   Something; 
} 
} 

您在.aspx页面上有一个列表视图，例如：

 <   asp：listview     id   =  lstEmployee    runat   =  server    xmlns：asp   = ＃unknown >  
 onitemdatabound =lstEmployee_ItemDataBound > 
 <   itemtemplate  >  
 <   tr     id   =  Tr1    runat   = 服务器 >  
 <   td     id   =   Td1    runat  < span class =code-keyword> =  server >  
 <％ -    数据绑定内容。    - ％>   
 <   asp：label     id   =  NameLabel    runat   =  server >  
 Text ='<％ #Eval（ 名称）％>' /> 
 <   / asp：label  >  <   / td  >  
 <   / tr  >  
 <   / itemtemplate   >  
 <   / asp：listview  >  

和页面加载绑定列表视图和DataBound事件后面的代码获取标签的id

 使用系统; 
 使用 System.Collections.Generic; 
 使用 System.Web.UI.WebControls; 
 
 命名空间 WebApplication1 
 {
  public   partial   class  WebForm1：System.Web.UI.Page 
 {
  protected   void  Page_Load（ object  sender，EventArgs e）
 {
 List< employee> empSource =  new 列表< employee>（）
 {
 新员工（） 
 {
 Name =   Sandeep 
}，
  new  Employee（）
 {
 Name =   Raviender 
} 
}; 
 lstEmployee.DataSource = empSource; 
 lstEmployee.DataBind（）; 
} 
 
  protected   void  lstEmployee_ItemDataBound（ object  sender，ListViewItemEventArgs e）
 {
  if （e.Item.ItemType == ListViewItemType.DataItem ）
 {
 Label lblName =（Label）e.Item.FindControl（  NameLabel< /跨度>）; 
  if （lblName.Text ==   Sandeep）
 {
 lblName.Text =   Sandeep Singh Shekhawat< /跨度>; 
} 
} 
} 
} 
  public   class 员工
 {
  public   string 名称{获得;  set ; } 
} 
 
} < /  员工 >  < /   employee  >  

How can i access the id of specific label in listview in code behind to get its value

解决方案

Try like this..

protected void ListView1_ItemDataBound(object sender, ListViewItemEventArgs e)
       {
           if (e.Item.ItemType == ListViewItemType.DataItem)
           {
              Label lbl =  e.Item.FindControl("yourLabelName") as Label;
              lbl.Text = "Something";
           }
       }

You have a list view on .aspx page for example:

<asp:listview id="lstEmployee" runat="server" xmlns:asp="#unknown">
            onitemdatabound="lstEmployee_ItemDataBound" >   
   <itemtemplate>
     <tr id="Tr1" runat="server">
      <td id="Td1" runat="server">
        <%-- Data-bound content. --%>
        <asp:label id="NameLabel" runat="server">
          Text='<%#Eval("Name") %>' />
      </asp:label></td>
    </tr>
   </itemtemplate>
   </asp:listview>

and code behind on page load bind list view and on DataBound event get id of label

using System;
using System.Collections.Generic;
using System.Web.UI.WebControls;

namespace WebApplication1
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            List<employee> empSource = new List<employee>()
                                        {
                                            new Employee()
                                            {
                                                Name ="Sandeep"
                                            },
                                            new Employee()
                                            {
                                                Name ="Raviender"
                                            }
                                        };
            lstEmployee.DataSource = empSource;
            lstEmployee.DataBind();
        }

        protected void lstEmployee_ItemDataBound(object sender, ListViewItemEventArgs e)
        {
            if (e.Item.ItemType == ListViewItemType.DataItem)
            {
                Label lblName = (Label)e.Item.FindControl("NameLabel");
                if (lblName.Text == "Sandeep")
                {
                    lblName.Text = "Sandeep Singh Shekhawat";
                }
            }
        }        
    }
    public class Employee
    {
        public string Name { get; set; }
    }
   
}</employee></employee>

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