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ASP.NET Ajax UpdatePanel 刷新時的淡出淡入效果

2007-12-17 10:13 330 查看
ASP.NET Ajax UpdatePanel 刷新時的淡出淡入效果 文/黃忠成 近日老婆為了準備考試，在網路上找尋考古題時，偶然訪問了一個某教授的網站，這個網站在切換頁面時，以淡出淡入效果來取代頁面的刷新，雖然以前早就看過這類效果，不過由於最近在寫ASP.NET Ajax的書籍，突然想到這也可以用在UpdatePanel的刷新過程！遂寫下一個小範例，這個例子可以在UpdatePanel刷新時，呈現淡出及淡入的效果，更有趣的是，這個淡出及淡入的效果是利用Ajax Control Toolkit的Animation來達成的，這意味著其它如Resize、Move、Color等Animation也可以與此技巧合用，例子本身並不複雜，概念也很簡單，不過若你仔細看裡面的程式碼，我想你會得到一些使用ASP.NET Ajax的啟發，當然！這只是我的猜想，哈~~~。PS:話說回來.......我週日得陪考，8點到下午3點，看來得抱筆記電腦去試場寫書了，>"<！！ Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <cc1:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server"> </cc1:ToolkitScriptManager> <asp:Panel ID="hiddenPanel" runat=server Height="0px" Width="0px" Style="position:absolute; left:0px; top:0px; z-index:100; display:none"> <div id=hiddenInnerPanel></div> </asp:Panel> <div> <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional"> <ContentTemplate> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>" SelectCommand="SELECT [CustomerID], [CompanyName], [ContactName], [ContactTitle], [Address], [City], [Region], [PostalCode], [Country], [Phone], [Fax] FROM [Customers]"> </asp:SqlDataSource> <asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False" BackColor="LightGoldenrodYellow" BorderColor="Tan" BorderWidth="1px" CellPadding="2" DataKeyNames="CustomerID" DataSourceID="SqlDataSource1" ForeColor="Black" GridLines="None" PageSize="20"> <FooterStyle BackColor="Tan" /> <Columns> <asp:CommandField ShowSelectButton="True" /> <asp:BoundField DataField="CustomerID" HeaderText="CustomerID" ReadOnly="True" SortExpression="CustomerID" /> <asp:BoundField DataField="CompanyName" HeaderText="CompanyName" SortExpression="CompanyName" /> <asp:BoundField DataField="ContactName" HeaderText="ContactName" SortExpression="ContactName" /> <asp:BoundField DataField="ContactTitle" HeaderText="ContactTitle" SortExpression="ContactTitle" /> <asp:BoundField DataField="Address" HeaderText="Address" SortExpression="Address" /> <asp:BoundField DataField="City" HeaderText="City" SortExpression="City" /> <asp:BoundField DataField="Region" HeaderText="Region" SortExpression="Region" /> <asp:BoundField DataField="PostalCode" HeaderText="PostalCode" SortExpression="PostalCode" /> <asp:BoundField DataField="Country" HeaderText="Country" SortExpression="Country" /> <asp:BoundField DataField="Phone" HeaderText="Phone" SortExpression="Phone" /> <asp:BoundField DataField="Fax" HeaderText="Fax" SortExpression="Fax" /> </Columns> <SelectedRowStyle BackColor="DarkSlateBlue" ForeColor="GhostWhite" /> <PagerStyle BackColor="PaleGoldenrod" ForeColor="DarkSlateBlue" HorizontalAlign="Center" /> <HeaderStyle BackColor="Tan" Font-Bold="True" /> <AlternatingRowStyle BackColor="PaleGoldenrod" /> </asp:GridView> </ContentTemplate> </asp:UpdatePanel> <script language=javascript> var prm = Sys.WebForms.PageRequestManager.getInstance(); prm.add_beginRequest(BeginRequest); prm.add_endRequest(EndRequest); //will,not just FadeIn/FadeOut,you can use other animation,like resize. var ani = $create( AjaxControlToolkit.Animation.FadeOutAnimation, {target: $get('hiddenPanel'), duration: .5, fps :25}); function BeginRequest(sender,args) { //only playing animation at grid page-switching if(args.get_postBackElement().id == "GridView1" && theForm.__EVENTARGUMENT.value.indexOf('Page') != -1) { //set visible and playing animation var hiddenPanel = $get('hiddenPanel'); var updatePanel = $get('UpdatePanel1'); var bounds = Sys.UI.DomElement.getBounds(updatePanel); if(Sys.Browser.agent == Sys.Browser.Firefox) { //for firefox,px is need. hiddenPanel.style.width = bounds.width+"px"; hiddenPanel.style.height = bounds.height+"px"; } else { hiddenPanel.style.width = bounds.width; hiddenPanel.style.height = bounds.height; } Sys.UI.DomElement.setLocation(hiddenPanel,bounds.x,bounds.y); //the key point,remove it will raise exception. hiddenPanel.innerHTML = updatePanel.innerHTML.replace(/\id=temp_/g, "id="); hiddenPanel.style.display = "block"; ani.add_ended(AniStop); ani.play(); } } function AniStop() { //set hidden. var hiddenPanel = $get('hiddenPanel'); hiddenPanel.style.left = "0px"; hiddenPanel.style.top = "0px"; hiddenPanel.style.height = "0px"; hiddenPanel.style.width = "0px"; hiddenPanel.style.display = "none"; hiddenPanel.innerHTML = ""; } function EndRequest(sender,args) { //you can un-mark below code at async-postback ended, //but we want user can see animation play to end ^_^ //ani.stop(); } </script> <cc1:AnimationExtender ID="AnimationExtender1" runat="server" TargetControlID="hiddenPanel"> </cc1:AnimationExtender> </div> </form> </body> </html>
效果圖

PS:不是糊掉哦，是淡入的交會點。

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