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if (FindControl(ctrlName) != null) //当aspx页面中有这个Label时,才做下面的数据绑定!
{
Label lbl = (Label)FindControl(ctrlName);
lbl.Text = dr["Name"].ToString();
}
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="LabelDemo.aspx.cs" Inherits="LabelDemo" %>
<!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:Label ID="Label1" runat="server" Text='<%# getText(Convert.ToInt32(((Label)sender).ClientID.Substring(5))) %>'></asp:Label><br />
<asp:Label ID="Label2" runat="server" Text='<%# getText(Convert.ToInt32(((Label)sender).ClientID.Substring(5))) %>'></asp:Label><br />
<asp:Label ID="Label3" runat="server" Text='<%# getText(Convert.ToInt32(((Label)sender).ClientID.Substring(5))) %>'></asp:Label><br />
<asp:Label ID="Label4" runat="server" Text='<%# getText(Convert.ToInt32(((Label)sender).ClientID.Substring(5))) %>'></asp:Label><br />
<asp:Label ID="Label5" runat="server" Text='<%# getText(Convert.ToInt32(((Label)sender).ClientID.Substring(5))) %>'></asp:Label><br />
</div>
</form>
</body>
</html>
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 LabelDemo : System.Web.UI.Page
{
protected string getText(int index)
{
DataTable dt = getDataTable();
return dt.Rows[index - 1][1].ToString();
}
protected DataTable getDataTable()
{
System.Data.DataTable dt = new System.Data.DataTable();
System.Data.DataRow dr;
dt.Columns.Add(new System.Data.DataColumn("ID", typeof(System.Int32)));
dt.Columns.Add(new System.Data.DataColumn("Name", typeof(System.String)));
dr = dt.NewRow();
dr[0] = 1;
dr[1] = "小明";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[0] = 2;
dr[1] = "小强";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[0] = 3;
dr[1] = "小张";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[0] = 4;
dr[1] = "小李";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[0] = 5;
dr[1] = "小关";
dt.Rows.Add(dr);
return dt;
}
protected void Page_Load(object sender, EventArgs e)
{
this.DataBind();
}
}
DataTable A = getData();
if (A.Rows.Count > 0)
{
foreach (DataRow dr in A.Rows)
{
string ctrlName = "Label" + dr["ID"].ToString();
Label lbl = (Label)FindControl(ctrlName);
lbl.Text = dr["Name"].ToString();
}
}
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="LabelDemo.aspx.cs" Inherits="LabelDemo" %>
<!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:Label ID="Label1" runat="server" Text="Label"></asp:Label><br />
<asp:Label ID="Label2" runat="server" Text="Label"></asp:Label><br />
<asp:Label ID="Label3" runat="server" Text="Label"></asp:Label><br />
<asp:Label ID="Label4" runat="server" Text="Label"></asp:Label><br />
<asp:Label ID="Label5" runat="server" Text="Label"></asp:Label><br />
</div>
</form>
</body>
</html>
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 LabelDemo : System.Web.UI.Page
{
protected DataTable getDataTable()
{
System.Data.DataTable dt = new System.Data.DataTable();
System.Data.DataRow dr;
dt.Columns.Add(new System.Data.DataColumn("ID", typeof(System.Int32)));
dt.Columns.Add(new System.Data.DataColumn("Name", typeof(System.String)));
dr = dt.NewRow();
dr[0] = 1;
dr[1] = "小明";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[0] = 2;
dr[1] = "小强";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[0] = 3;
dr[1] = "小张";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[0] = 4;
dr[1] = "小李";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[0] = 5;
dr[1] = "小关";
dt.Rows.Add(dr);
return dt;
}
protected void Page_Load(object sender, EventArgs e)
{
DataTable dt = getDataTable();
for (int i = 1; i < 6; i++)
{
Label lbl = FindControl("Label" + i.ToString()) as Label;
if (lbl != null)
lbl.Text = dt.Rows[i - 1][1].ToString();
}
}
}