这是我的C＃代码：
InterfaceMethodref_info我想在Repeater控件中使用控件的 using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
int id;
protected void Page_Load(object sender, EventArgs e)
{
Label2.Text = " " + Session["username"] + " ";
string CS = ConfigurationManager.ConnectionStrings["DBCS"].ConnectionString;
using (SqlConnection con = new SqlConnection(CS))
{
id = Convert.ToInt32(Request.QueryString["Prod_Id"].ToString());
con.Open();
SqlCommand cmd = con.CreateCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "select * from Product where Prod_Id="+ id +"";
cmd.ExecuteNonQuery();
DataTable dt = new DataTable();
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(dt);
Repeater1.DataSource = dt;
Repeater1.DataBind();
con.Close();
}
}
protected void Button1_Click(object sender, EventArgs e)
{
string CS = ConfigurationManager.ConnectionStrings["DBCS"].ConnectionString;
using (SqlConnection con = new SqlConnection(CS))
{
con.Open();
SqlCommand cmd = con.CreateCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "insert into Order values('" + Label2.Text + "','"+ Label3.Text +"')";
cmd.ExecuteNonQuery();
con.Close();
}
}
}
here is my.aspx code
<%@ Page Title="" Language="C#" MasterPageFile="~/welcome_mstr.master" AutoEventWireup="true" CodeFile="desc.aspx.cs" Inherits="_Default" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<b>Welcome</b>
<asp:Label ID="Label2" runat="server" Text="Label"></asp:Label>
!<asp:Repeater ID="Repeater1" runat="server"
onitemcommand="Repeater1_ItemCommand">
<HeaderTemplate></HeaderTemplate>
<ItemTemplate>
<div style=" width:700px; margin-left:200px; background-color:#FCFBE3">
<br />
<table>
<tr><td><img alt="" src='<%# Eval("Image") %>' style=" width:299px; height:299px;" /></td>
<td valign="top"><table >
<tr><td align="left"><asp:Label ID="Label3" runat="server" Text='<%#Eval("Prod_Name") %>'></asp:Label></td></tr>
<tr><td align="left"><asp:Label ID="Label4" runat="server" Text='<%#Eval("Weight") %>'></asp:Label></td></tr>
<tr><td align="left">Cost: ₹<asp:Label ID="Label1" runat="server" Text='<%#Eval("Price") %>'></asp:Label></td></tr>
<tr><td>
<asp:Button ID="Button1" runat="server" Text="Order" /> </td></tr>
</table>
</td>
</tr>
</table>
</div>
</ItemTemplate>
<FooterTemplate></FooterTemplate>
</asp:Repeater>
</asp:Content>
属性，并通过按钮单击事件将该文本值插入表中，但我无法访问控件本身。它显示如下错误：
当前上下文中不存在名称“label3”
我怎么解决这个问题？
提前致谢。
答案 0 :(得分：1)
您可以像以下代码段一样访问它：
protected void Button1_Click(object sender, EventArgs e)
{
string strLabel3 = string.Empty;
foreach (RepeaterItem ri in Repeater1.Items)
{
Label lbl3= (Label)ri.FindControl("Label3");
strLabel3 = lbl3.Text;
}
//Remaing logic
}
更新1
你也可以这样做：
protected void Button1_Click(object sender, EventArgs e)
{
Button btn = (Button) sender;
RepeaterItem item = (RepeaterItem) btn.NamingContainer;
Label lbl3 = (Label)item.FindControl("Label3");
string strlbl3 = lbl3.Text;
}