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Show Ajax Updateprogress in Updatepanel with Postback Triggers in C#, VB.NET

Jun 15, 2015

Here I will explain how to show or display updateprogress in updatepanel with postback triggers in using with example or show loading / progress bar while uploading files using ajax updatepanel updateprogress in using c#, with example. By using ajax postbacktrigger and updateprogress properties in ajax updatepanel  in we can show loading image while upload files using c#,

In previous articles I explained show progressbar during postbacks using updatepanel, ajax updatepanel with triggers example in, confirmationbox with yes/no options using modalpopup, ajax modalpopupextender to edit gridview row details,
group columns in gridview, gridview examples in and many articles relating to gridview,, c#, and jQuery. Now I will explain how to show progress bar while uploading files using ajax updatepanel updateprogess in using c#,

Now open your aspx page and write the code like as shown below

<html xmlns="">
<head id="Head1" runat="server">
<title>Show Loading Image while uploading images using updatepanel</title>
<style type="text/css">
position: fixed;
z-index: 999;
height: 100%;
width: 100%;
top: 0;
background-color: Black;
filter: alpha(opacity=60);
opacity: 0.6;
-moz-opacity: 0.8;
<script type="text/javascript">
function showProgress() {
var updateProgress = $get("<%= UpdateProgress.ClientID %>"); = "block";
<form id="form1" runat="server">
<asp:ScriptManager ID="scriptmanager1" runat="server"></asp:ScriptManager>
<asp:UpdatePanel runat="server" ID="updatepanel1" UpdateMode="Conditional">
<div style="align:center; margin-left:350px; margin-top:200px">
<asp:FileUpload ID="uploadfiles1" runat="server" />
<asp:Button ID="btnUpload" Text="Upload" runat="server" onclick="btnUpload_Click" OnClientClick="showProgress()" /><br />
<asp:Label ID="lblMsg" runat="server"/>
<asp:PostBackTrigger ControlID="btnUpload" />
<asp:UpdateProgress ID="UpdateProgress" runat="server" AssociatedUpdatePanelID="updatepanel1">
<div class="overlay">
<div style=" z-index: 1000; margin-left: 350px;margin-top:200px;opacity: 1;-moz-opacity: 1;">
<img alt="" src="loading.gif" />

After completion of aspx page create new folder uploads in your application to upload files and add following namespaces in codebehind

C# Code

using System;
using System.IO;

After completion of adding namespaces you need to write the code like as shown below

protected void Page_Load(object sender, EventArgs e)
protected void btnUpload_Click(object sender, EventArgs e)
string fileName = Path.GetFileName(uploadfiles1.FileName);
uploadfiles1.SaveAs(Server.MapPath("~/uploads/") + fileName);
lblMsg.Text = "File Uploaded Successfully";


Imports System.IO
Partial Class VBCode
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
End Sub
Protected Sub btnUpload_Click(sender As Object, e As EventArgs)
Dim fileName As String = Path.GetFileName(uploadfiles1.FileName)
uploadfiles1.SaveAs(Server.MapPath("~/uploads/") & fileName)
lblMsg.Text = "File Uploaded Successfully"
End Sub
End Class


Show Ajax Updateprogress in Updatepanel with Postback Triggers
Download Sample Code Attached

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