ASP.net 2.0 in the implementation of the window alarm tips

In the Web application, such as OA, often need to use some hints, such as email arrived, do a hint box like MSN, pop-up to the user prompts, and then close. In the Ajax of ASP.net 2.0, this is not difficult to do now, just see a foreigner's article, explained to, the following summary of

For example, there is a database table, is stored email, when the database table in the email one time, prompts the user, first simple write a webservice as follows

[ScriptService]
public class InboxService : System.Web.Services.WebService
{
　　 [WebMethod]
　　 public int GetLatestNumberOfEmails()
　　 {
　　　　 int numberOfEmails = 0;
　　　　 using (SqlConnection conn = new SqlConnection(WebConfigurationManager.ConnectionStrings[0].ConnectionString))
　　　　 {
　　　　　　 using (SqlCommand cmd = new SqlCommand("GetLatestNumberOfEmails", conn))
　　　　　　 {
　　　　　　　　 cmd.CommandType = CommandType.StoredProcedure;
　　　　　　　　 conn.Open();
　　　　　　　　 numberOfEmails = (int)cmd.ExecuteScalar();
　　　　　　 }
　　　　 }
　　　　 return numberOfEmails;
　　 }
}

Notice here to call Webserice on the client via Ajax, plus [ScriptService]

2 in Default.aspx, first add a UpdateProgress control, as follows

<asp:UpdateProgress DynamicLayout="False" ID="UpdateProgress1" runat="server">
　　 <ProgressTemplate>
　　　　 <div id="modal" class="modal">
　　　　　　 <div class="modalTop">
　　　　　　　　 <div class="modalTitle">My Inbox</div>
　　　　　　　　 <span style="CURSOR: hand" onclick="javascript:HidePopup();">
　　　　　　　　
　　　　　　 </span>
　　　　 </div>
　　　　　　 <div class="modalBody">
　　　　　　　　 You received <strong><span id="modalBody"></span></strong>&nbsp; Email(s).
　　　　　　 </div>
　　　　 </div>
　　 </ProgressTemplate>
　　 </asp:UpdateProgress>