前台: %@ Control Language="C#" AutoEventWireup="true" CodeFile="ChenLogin.ascx.cs" Inherits="ChenLogin" % asp:TextBox ID="TextBox1" runat="server"/asp:TextBox asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" /
前台:
function winpup()
{
if ( document.getElementById('').value == "")
{
alert("不能为空!");
return false;
}
else
{
alert("chen");
return true;
}
}
后台:
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;
using System.Data.SqlClient;
using System.ComponentModel;
public partial class ChenLogin : System.Web.UI.UserControl
{
private string txtname = "";
private string reuri = "";
private string datasource = "";
private string lbltext = "请填写。";
public string Txtname
{
get
{
return this.TextBox1.Text.Trim();
}
}
public string ReURI
{
set
{
reuri = value;
}
}
public string DataSources
{
set
{
datasource = value;
}
}
//[Category("Demo"), Description("Demo from idothink.com")]
public string LblText
{
get
{
return lbltext;
}
set
{
lbltext = value;
this.Invalidate();
}
}
private void Invalidate()
{
this.Label1.Text = lbltext;
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Button1.Attributes.Add("onclick", "return winpup();");
Button1.Attributes.Add("style", "border:1px solid #F00;color:#F00;");
}
}
//protected override void OnPaint(PaintEventArgs pe)
//{
// // Calling the base class OnPaint
// base.OnPaint(pe);
// // Custom paint code here
// pe.Graphics.DrawString(
// helloValue,
// Font,
// new SolidBrush(ForeColor),
// ClientRectangle, new StringFormat());
//}
protected void Button1_Click(object sender, EventArgs e)
{
//Response.Redirect(reuri);
this.Label1.Text = this.TextBox1.Text;
}
}
如何引用用户控件请查看:
http://blog.csdn.net/ajaxchen_615/archive/2009/05/22/4208247.aspx