Dot Net Example: Show loading image on button click in asp.net using AJAX UpdateProgress

Step 1: - Right Click on Project Root folder => Click on Manage NuGet Packages… => Search Ajax in search box and Select AjaxControlToolkit from list => Click on Install button

Step 2: - Design Page Code

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="AjaxUpdateProgress.aspx.cs" Inherits="AjaxControls.AjaxUpdateProgress" %>

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>

<!DOCTYPE html>

</head>

<body>

<div>

<asp:ScriptManager runat="server">

</asp:ScriptManager>

<asp:UpdatePanel ID="UpdatePanel1" runat="server">

<asp:Button ID="Button1" runat="server" Text="Load Data" OnClick="Button1_Click" />

<asp:GridView ID="GridView1" runat="server">

</asp:GridView>

</ContentTemplate>

<asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click" />

</Triggers>

</asp:UpdatePanel>

<br />

<asp:UpdateProgress ID="UpdateProgress1" runat="server">

<span style="border-width: 0px; position: fixed; padding: 20px; background-color: #FFFFFF; font-size: 30px; left: 40%; top: 40%; border-radius: 50px;">Loading ...</span>

</div>

</ProgressTemplate>

</asp:UpdateProgress>

</div>

</form>

</body>

</html>

Step 3: - Code behind Page Code

using System;

using System.Collections.Generic;

using System.Data;

using System.Linq;

using System.Threading;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

namespace AjaxControls

{

public partial class AjaxUpdateProgress : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Button1_Click(object sender, EventArgs e)

{

//Sleep the thread to see loading progress

Thread.Sleep(10000);

GridView1.DataSource = BindData();

GridView1.DataBind();

}

protected DataTable BindData()

{

DataTable dt = new DataTable();

DataRow dr = null;

dt.Columns.Add(new DataColumn("RowNumber", typeof(string)));

dt.Columns.Add(new DataColumn("Column1", typeof(string)));

dt.Columns.Add(new DataColumn("Column2", typeof(string)));

dt.Columns.Add(new DataColumn("Column3", typeof(string)));

int totalRow = 9;

for (int i = 0; i < totalRow; i++)

{

dr = dt.NewRow();

dr["RowNumber"] = i + 1;

dr["Column1"] = "Row" + i;

dr["Column2"] = "Row" + i;

dr["Column3"] = "Row" + i;

dt.Rows.Add(dr);

}

return dt;

}

Step 4: - Output

Note:- Instead of Loading text you can use loader.gif image.

To download loader.gif

Right Click and Save

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Saturday, 24 March 2018

Show loading image on button click in asp.net using AJAX UpdateProgress

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