How to show the Loader image like in gmail when loading Data into GridView?

Question

0.00/5 (No votes)

See more:

Hi everyone,Could any one help how to show the loader image when the data is loading ?I did a sample one which is not a perfect one.Please suggest me the best way .I have a question can we use jquery or javascript?Here when i click the load the data has to load to GV in between this process the preloader has to be visible like in GMAIL.

XML

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Loader Image While Loading Data in GV.aspx.cs"
    Inherits="Loader_Image_While_Loading_Data_in_GV" %>
<!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>Loader Image While Loading Data in GV</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <table>
            <tr>
                <td>
                    <asp:Image ID="load_img" runat="server" Height="70px" Width="70px" ImageUrl="~/Images/ajax-loader_green.gif"
                        Visible="false" />
                </td>
            </tr>
            <tr>
                <td>
                    <asp:Button ID="btnload" runat="server" Text="Load" OnClick="btnload_Click" />
                </td>
            </tr>
            <tr>
                <td>
                    <asp:GridView ID="gv1" runat="server" BackColor="LightGoldenrodYellow" BorderColor="Tan"
                        BorderWidth="1px" CellPadding="2" ForeColor="Black" GridLines="None">
                        <AlternatingRowStyle BackColor="PaleGoldenrod" />
                        <FooterStyle BackColor="Tan" />
                        <HeaderStyle BackColor="Tan" Font-Bold="True" />
                        <PagerStyle BackColor="PaleGoldenrod" ForeColor="DarkSlateBlue" HorizontalAlign="Center" />
                        <SelectedRowStyle BackColor="DarkSlateBlue" ForeColor="GhostWhite" />
                        <SortedAscendingCellStyle BackColor="#FAFAE7" />
                        <SortedAscendingHeaderStyle BackColor="#DAC09E" />
                        <SortedDescendingCellStyle BackColor="#E1DB9C" />
                        <SortedDescendingHeaderStyle BackColor="#C2A47B" />
                    </asp:GridView>
                </td>
            </tr>
        </table>
    </div>
    </form>
</body>
</html>

In the Code behind i wrote like this

<pre lang="cs">using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using AdventureWorksModel;
public partial class Loader_Image_While_Loading_Data_in_GV : System.Web.UI.Page
{
    AdventureWorksEntities awe = new AdventureWorksEntities();
    protected void Page_Load(object sender, EventArgs e)
    {
    }
    protected void btnload_Click(object sender, EventArgs e)
    {
        load_img.Visible = true;
        gv1.DataSource = awe.CountryRegionCurrencies.ToList();
        gv1.DataBind();
        load_img.Visible = false;
    }
}

Posted 30-Jan-11 23:11pm

hemantwithu

Updated 30-Jan-11 23:15pm

m@dhu

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

jim lahey · Answer 1 · 2011-01-30T23:16:00

Solution 1

Your example won't work because you're not using AJAX and your page is executing synchronously.

Try and use an UpdatePanel from the MS AJAX framework:

http://msdn.microsoft.com/en-us/library/bb386454.aspx

Posted 30-Jan-11 23:16pm

jim lahey

Comments

soni uma 31-Jan-11 5:24am

Right Answer