在ASP.NET中实现弹窗报警提示

在 web应用中，比如OA中，经常要用到一些提示，比如EMAIL到达了，就做个象MSN那样的提示框，弹出给用户提示，然后再关闭。在asp.net 2.0的ajax中，这个现在不难做到了，刚好看到老外的一篇文章，讲解到，下面小结 

         比如有个数据库表，是存放EMAIL的，当数据库表中的EMAIL一有的时候，就提示用户，首先简单写一个WEBSERVICE如下

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[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)) Chinaz_com             {                 cmd.CommandType = CommandType.StoredProcedure;                 conn.Open();                 numberOfEmails = (int)cmd.ExecuteScalar();             }         }         return numberOfEmails;     } }

         这里要注意要在客户端通过AJAX调用WEBSERICE，要加上[ScriptService]

          2 在default.aspx中，首先加入一个updateprogress控件，如下 

<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();">                   <img alt="Hide Popup" src="App_Themes/Default/images/close_vista.gif" border="0" />              </span>          </div>             <div class="modalBody">                 You received <strong><span id="modalBody"></span></strong>&nbsp; Email(s).             </div>         </div>     </ProgressTemplate>     </asp:UpdateProgress>

         这里的关闭X按钮，调用javascript的脚本，等阵再说 

         然后当然要加scriptmanager控件了，如下

<asp:ScriptManager ID="ScriptManager1" runat="server">             <Services>                 <asp:ServiceReference Path="~/InboxService.asmx" />             </Services>         </asp:ScriptManager>

           这里调用了我们刚才写的webservice

原文转自：http://www.ltesting.net