本文介绍了以下代码未在mozilla firefox中显示任何输出..而在Internet Explorer中清楚地显示了输出的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
2
3 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4
5 <html xmlns="http://www.w3.org/1999/xhtml" >
6 <head runat="server">
7 <title>Untitled Page</title>
8 </head>
9 <body>
10 <form id="form1" runat="server">
11 <div>
12 <table>
13 <tr>
14 <td align="center">ASP.NET2 Slide Show<hr />
15 </td>
16 </tr>
17 <tr>
18 <td align="center">
19 <img id="photo" src="" runat="server" border="0" />
20 </td>
21 </tr>
22 </table>
23 </div>
24 </form>
25
26 <script type="text/javascript">
27 //A timer will be fired in 5 seconds to call getNextImage()
28 var c_interval = 5000;
29 window.setTimeout("getNextImage()", c_interval);
30
31 function getNextImage()
32 {
33 //Send the request to server with the current image url as the argument
34 CallServer(document.getElementById("photo").src, "");
35 }
36
37 function ReceiveServerData(rValue)
38 {
39 //Receive server's response of a string rValue, which is prepared in the server's function
40 //GetCallbackResult()
41 var wds = rValue.split(";");
42 //Assign the transition effect
43 document.getElementById("photo").style.filter = wds[1];
44 //Preload the image file from server. When finishing download, imageLoaded function will be called
45 //with the img object as the argument
46 var img = new Image();
47 img.onload = function(){ imageLoaded(this); }
48 img.onerror = function(){ imageError(this); }
49 img.onabort = function(){ imageError(this); }
50 img.src = wds[0];
51 }
52 function imageError(img)
53 {
54 //If image download errors occur, this function will be called.
55 window.setTimeout("getNextImage()", 1000);
56 }
57 function imageLoaded(img)
58 {
59 var photo = document.getElementById("photo"); //Find the image control object
60 photo.filters[0].apply(); //Apply the transition effect
61 photo.filters[0].play(); //Play the effect and display the new image
62 photo.src = img.src; //Assign the image to the image control
63
64 window.setTimeout("getNextImage()", c_interval);//Initiate the next request
65 }
66 </script>
67
68 </body>
69 </html>
public partial class _Default : System.Web.UI.Page, System.Web.UI.ICallbackEventHandler
14 {
15 string m_lastFileName = "none";
16
17 protected void Page_Load(object sender, EventArgs e)
18 {
19 if (IsPostBack)
20 return;
21
22 photo.Src = GetNextImageUrl();
23
24 //Register Ajax client script to client's browsers. This has to be hard coded.
25 string cbReference = Page.ClientScript.GetCallbackEventReference(this, "arg", "ReceiveServerData", "context");
26 string callbackScript = "function CallServer(arg, context)" + "{ " + cbReference + "} ;";
27 Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "CallServer", callbackScript, true);
28 }
29
30 public void RaiseCallbackEvent(string eventArgument)
31 {
32 //This is first place to receive the callback from client's browser. The parameter 'eventArgument'
33 //is the parameter passed from the Javascript's call 'CallServer()'. In this example, it is the
34 //last image url.
35 m_lastFileName = Path.GetFileName(eventArgument);
36 }
37
38 public string GetCallbackResult()
39 {
40 //This is the second call triggled by the 'CallServer()' and it is the place to prepare and return a string
41 //to the client. Here the returned string is the image url and the transition effect.
42 return GetNextImageUrl() + ";" + GetNextTransition();
43 }
44
45 private string GetNextImageUrl()
46 {
47 //Randomly pick a image file in the server.
48 string[] files = Directory.GetFiles(AppDomain.CurrentDomain.BaseDirectory + "images", "*.jpg");
49 if (files.Length == 0)
50 return string.Empty;
51
52 while (true)
53 {
54 int n = (int)((files.Length - 1) * (new Random()).NextDouble());
55 //Do not want to repeat the last image
56 if (files[n].IndexOf(m_lastFileName) < 0)
57 {
58 return files[n].Replace(AppDomain.CurrentDomain.BaseDirectory, string.Empty);
59 }
60 }
61 }
62 private string GetNextTransition()
63 {
64 //Randomly pick a transition effect. Note some of the effects only work in IE.
65 int n = (int)((new Random().NextDouble()) * 5);
66 switch (n)
67 {
68 case 0:
69 case 1:
70 n = (int)((new Random().NextDouble()) * 22);
71 return "revealTrans(duration=2,transition=" + n.ToString() + ")";
72 case 2:
73 case 3:
74 if (Request.Browser.Browser == "IE")
75 {
76 n = (int)((new Random().NextDouble()) * 8);
77 switch (n)
78 {
79 case 0:
80 return "progid:DXImageTransform.Microsoft.RandomDissolve()";
81 case 1:
82 return "progid:DXImageTransform.Microsoft.Pixelate(MaxSquare=20, Duration=2, Enabled=false)";
83 case 2:
84 return "progid:DXImageTransform.Microsoft.RadialWipe(wipeStyle='clock')";
85 case 3:
86 return "progid:DXImageTransform.Microsoft.Wheel(spokes=4)";
87 case 4:
88 return "progid:DXImageTransform.Microsoft.Stretch(stretchStyle='spin')";
89 default:
90 return "progid:DXImageTransform.Microsoft.Stretch(stretchStyle='push')";
91 }
92 }
93 else
94 return "blendTrans(duration=2)";
95 default:
96 return "blendTrans(duration=2)";
97 }
98 }
99 }推荐答案
这篇关于以下代码未在mozilla firefox中显示任何输出..而在Internet Explorer中清楚地显示了输出的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！