This is a very simple and useful code snippet. In this article, I will show you how to show a loading indicator when a server is processing the data in the ASP.NET WebForm application
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="PleaseWaitButton.aspx.cs"
Inherits="PleaseWaitButton" %>
<!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>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<div>
<asp:Button ID="Button1" runat="server" Text="Button" />
</div>
</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 PleaseWaitButton : System.Web.UI.Page
{
protected void Button1_Click(object sender, System.EventArgs e)
{
System.Threading.Thread.Sleep(5000);
ClientScript.RegisterClientScriptBlock(this.GetType(), "reset",
"document.getElementById('" + Button1.ClientID + "').disabled=false;", true);
}
protected void Page_Load(object sender, System.EventArgs e)
{
System.Threading.Thread.Sleep(5000);
Button1.Attributes.Add("onclick", ClientScript.GetPostBackEventReference(Button1, "") + ";
this.value='Please wait...';this.disabled = true;");
}
}