问题
I have a ASP.NET Application with a ListView. I get Data from the Active Directory and now I want a wait symbol for the time if the ListVew is building. I thought I 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) close if the ListView is finish. :(
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 how 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>
update aspx:
<%@ 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>
回答1:
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>
回答2:
Try to put your button within an UpdatePanel that contains the code may take a long time to execution, then associate the UpdateProgress control to the UpdatePanel. code you may need is just like:
<asp:UpdatePanel ID="updatePanelMain" runat="server">
<ContentTemplate>
<asp:button runat="server" ID="btnBenutzerSuchen" OnClick="btnBenutzerSuchen_Click"/>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="updatePanelMain" DisplayAfter="200">
<ProgressTemplate>
<div class="progress">
<img src="images/ajax-loader-arrows.gif" /> please wait...
</div>
</ProgressTemplate>
</asp:UpdateProgress>
Hope this helps. :)
回答3:
I did a small example simulation a button click within an updatePanel. Pay attention to the attribute AssociatedUpdatePanelID which must be set, in order to show your progressTemplate.
default.aspx
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Button ID="btnDoSomething" runat="server" Text="Do Something"
onclick="btnDoSomething_Click" />
<asp:ListView> YOUR_LISTVIEW_GOES_HERE </asp:ListView>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdateProgress ID="UpdateProgress1" DynamicLayout="true" runat="server"
AssociatedUpdatePanelID="UpdatePanel1">
<ProgressTemplate>
<div class="progress">
<img src="images/ajax-loader-arrows.gif" /> please wait...
</div>
</ProgressTemplate>
</asp:UpdateProgress>
default.aspx.cs
protected void btnDoSomething_Click(object sender, EventArgs e)
{
System.Threading.Thread.Sleep(5000);
// or update listView
}
回答4:
Show Progress Bar Using UpdateProgress Control in Asp.net
Refer This Link for more information
http://www.freshcodehub.com/Article/22/show-progress-bar-using-updateprogress-control-in-aspnet
<asp:UpdateProgress ID="prgLoadingStatus" runat="server" DynamicLayout="true">
<ProgressTemplate>
<div id="overlay">
<div id="modalprogress">
<div id="theprogress">
<asp:Image ID="imgWaitIcon" runat="server" ImageAlign="AbsMiddle" ImageUrl="~/img/progress.gif"
Width="230px" /><br />
Please wait...
</div>
</div>
</div>
</ProgressTemplate>
</asp:UpdateProgress>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Button ID="btnProgress" runat="server" Text="Show Progress" OnClick="btnProgress_Click" />
</ContentTemplate>
</asp:UpdatePanel>来源：https://stackoverflow.com/questions/12191436/how-i-can-use-the-updateprogress-control-for-show-a-waittime