How I can use the UpdateProgress Control to show a wait symbol?
I have an ASP.NET application with a ListView. I get data from Active Directory and now I want a wait symbol for the time if the ListVew is building. I thought I would use a UpdateProgress Control from Ajax Control toolkit. But I don't know how I can use it if I click on a Button and the wait symbol (for example a gif) closes if the ListView is finished. :(
My CS file:
protected void btnBenutzerSuchen_Click(object sender, EventArgs e)
{
//If I click on this Button the gif must start
try
{
... // my ListView get data
this.myListView.DataSource = dv;
this.myListView.DataBind();
...
}
catch (Exception)
{
...
}
//If the ListView is finish the gif must close
}
How I can do this? Can I do this with the UpdateProgress like this:
<asp:UpdateProgress ID="UpdateProgress1" DynamicLayout="true" runat="server" AssociatedUpdatePanelID="?" >
<ProgressTemplate>
<div class="progress">
<img src="images/ajax-loader-arrows.gif" /> please wait...
</div>
</ProgressTemplate>
</asp:UpdateProgress>
My update.aspx file:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="~/BenutzerListe.aspx.cs" Inherits="BenutzerListe.BenutzerListe" %>
<%@ Register TagPrefix="asp" Namespace="AjaxControlToolkit" Assembly="AjaxControlToolkit"%>
<!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>
<script src="Scripte/jquery-1.7.2.js" type="text/javascript"></script>
<script type="text/javascript" src="Scripte/jquery-ui-1.8.22.custom.min.js" ></script>
<script language="javascript" type="text/javascript">
// my javascript code
</script>
<link href="~/App_Theme/BenutzerListeStyle.css" type="text/css" rel="Stylesheet" />
<link href="App_Theme/jquery-ui-1.8.22.custom.css" type="text/css" rel="Stylesheet" />
<link href="App_Theme/PopUpDialog_Style.css" type="text/css" rel="Stylesheet" />
<style type="text/css">
#SuchTabelle
{
width: 587px;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<asp:scriptmanager id="ScriptManager1" runat="server">
</asp:scriptmanager>
<div class="header">
<br />
<table id="SuchTabelle" class="SuchTabelle" runat="server" border="0" width="100%">
<tr>
<th><asp:Label ID="id_SearchUser" runat="server" Text="lblSearchUser"></asp:Label></th>
<th class="txtBenutzerSuchen"><asp:TextBox ID="txtBenutzer" runat="server" Width="150px" ToolTip="Gesucht wird nach Vorname, Nachname, eMail , Abteilung und Telefonnummer"></asp:TextBox></th>
<th><asp:Label ID="id_location" runat="server" Text="lblLocation"></asp:Label></th>
<th class="DropDownList"><asp:DropDownList ID="dropWerk" runat="server" Width="200px" /></th>
<th>
<asp:Button ID="Button2" runat="server" Text="Suchen" onclick="btnBenutzerSuchen_Click" Width="150px"/>
</th>
</tr>
</table>
</div>
<div class="bodyList">
<asp:UpdatePanel ID="update" runat="server">
<ContentTemplate>
<asp:ListView> .... </asp:ListView>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdateProgress ID="updatePro" DynamicLayout="true" runat="server" AssociatedUpdatePanelID="update">
<ProgressTemplate>
<asp:Image ImageUrl="~/App_Theme/ajax_loader_circle.gif" runat="server" ID="waitsymbol" />
</ProgressTemplate>
</asp:UpdateProgress>
<hr />
</div>
</form>
</body>
</html>
Answer
First place your listview aspx code inside an update panel
<asp:UpdatePanel ID="up" runat="server">
<ContentTemplate>
// Place your list View Code here
<asp:ListView ..........
...... </asp:ListView>
</ContentTemplate>
<Triggers>
// If button is present outside update panel then specify AsynPostBackTrigger
<asp:AsyncPostBackTrigger ControlID="btnControlID" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
// Now Set AssociatedUpdatePanelID="up" in the UpdateProgress
<asp:UpdateProgress ID="UpdateProgress1" DynamicLayout="true" runat="server" AssociatedUpdatePanelID="up" >
<ProgressTemplate>
<div class="progress">
<img src="images/ajax-loader-arrows.gif" /> please wait...
</div>
</ProgressTemplate>
</asp:UpdateProgress>