Hi nauna,
There is nothing to set globally. You can wrote the JavaScript code in master page and add Fake Delay to simulate long running process.
HTML
Master Page
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>
<!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></title>
<style type="text/css">
.modal
{
position: fixed;
top: 0;
left: 0;
background-color: black;
z-index: 99;
opacity: 0.8;
filter: alpha(opacity=80);
-moz-opacity: 0.8;
min-height: 100%;
width: 100%;
}
.loading
{
font-family: Arial;
font-size: 10pt;
border: 5px solid #67CFF5;
width: 200px;
height: 100px;
display: none;
position: fixed;
background-color: White;
z-index: 999;
}
</style>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript">
function ShowProgress() {
setTimeout(function () {
var modal = $('<div />');
modal.addClass("modal");
$('body').append(modal);
var loading = $(".loading");
loading.show();
var top = Math.max($(window).height() / 2 - loading[0].offsetHeight / 2, 0);
var left = Math.max($(window).width() / 2 - loading[0].offsetWidth / 2, 0);
loading.css({ top: top, left: left });
}, 200);
}
$('form').live("submit", function () {
ShowProgress();
});
</script>
<asp:ContentPlaceHolder ID="head" runat="server">
</asp:ContentPlaceHolder>
</head>
<body>
<form id="form1" runat="server">
<div class="loading" align="center">
Loading. Please wait.<br />
<br />
<img src="loader.gif" alt="" />
</div>
<div>
<asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</div>
</form>
</body>
</html>
Content Page
<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true"
CodeFile="Default.aspx.cs" Inherits="_Default" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
Country:
<asp:DropDownList ID="ddlCountries" runat="server">
<asp:ListItem Text="All" Value="" />
<asp:ListItem Text="USA" Value="USA" />
<asp:ListItem Text="Brazil" Value="Brazil" />
<asp:ListItem Text="France" Value="France" />
<asp:ListItem Text="Germany" Value="Germany" />
</asp:DropDownList>
<asp:Button ID="btnSubmit" runat="server" Text="Load Customers" OnClick="btnSubmit_Click" />
<hr />
<asp:GridView ID="gvCustomers" runat="server" AutoGenerateColumns="false">
<Columns>
<asp:BoundField DataField="CustomerId" HeaderText="Customer Id" />
<asp:BoundField DataField="ContactName" HeaderText="Contact Name" />
<asp:BoundField DataField="City" HeaderText="City" />
</Columns>
</asp:GridView>
<br />
<asp:Button Text="Save" runat="server" OnClick="Save" />
</asp:Content>
Code
Default.aspx.cs
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string script = "$(document).ready(function () { $('[id*=btnSubmit]').click(); });";
ClientScript.RegisterStartupScript(this.GetType(), "load", script, true);
}
}
protected void btnSubmit_Click(object sender, EventArgs e)
{
// Add Fake Delay to simulate long running process.
System.Threading.Thread.Sleep(5000);
LoadCustomers();
}
private void LoadCustomers()
{
string strConnString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
string query = "SELECT * FROM Customers WHERE Country = @Country OR @Country = ''";
SqlCommand cmd = new SqlCommand(query);
cmd.Parameters.AddWithValue("@Country", ddlCountries.SelectedItem.Value);
using (SqlConnection con = new SqlConnection(strConnString))
{
using (SqlDataAdapter sda = new SqlDataAdapter())
{
cmd.Connection = con;
sda.SelectCommand = cmd;
using (DataSet ds = new DataSet())
{
sda.Fill(ds, "Customers");
gvCustomers.DataSource = ds;
gvCustomers.DataBind();
}
}
}
}
protected void Save(object sender, EventArgs e)
{
// Add Fake Delay to simulate long running process.
System.Threading.Thread.Sleep(5000);
}
Screenshot
