Ext.Net系列:二Event之DirectEvent 示例1-调用事件顺序

此示例演示DirectEvent中定义的事件Before、After、Success、Failure、Complete执行顺序

   这些事件是JS方法定义。以此执行的顺序是：1、Before 2、After 3、有异常或操作不成功Failure否则Success 4、Complete

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="EvnetOrder.aspx.cs" Inherits="Events_DirectEvents_EvnetOrder" %>

<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
<!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>事件执行顺序</title>

    <script runat="server">
        protected void CheckAuthor(object sender, DirectEventArgs e)
        {
            string author = e.ExtraParams["author"];
            if (author != "老虞")
            {
                e.ErrorMessage = "笔者不是老虞，而是" + author;
                e.Success = false;
            }
            else
            {
                //添加信息到客户端
                Ext.Net.Parameter parameter = new Ext.Net.Parameter();
                parameter.Name = "serverTime";
                parameter.Value = DateTime.Now.ToLongDateString();
                e.ExtraParamsResponse.Add(parameter);

                StringBuilder msg = new StringBuilder();
                for (int i = 0; i < e.ExtraParams.Count; i++)
                {

                    msg.AppendFormat("{0}={1}<br/>", e.ExtraParams[i].Name, e.ExtraParams[i].Value);
                }
                X.MessageBox.Notify(new NotificationConfig() { Icon = Icon.ApplicationHome, Title = "服务器：笔者信息", Html = msg.ToString() }).Show();

            }
        }
    </script>

    <script type="text/javascript">
      var index=0;
      var afterMethod=function(element,extraParams)
      {
            index++;
            var  params =extraParams || {}; 
            var msg="Author:"+params.author+"<br/>";
            msg+="BLog:<a target='_blank' href='"+params.blog+"'>"+params.blog+"</a><br/>";
            msg+="Time:"+params.time; 
            Ext.net.Notification.show({
              title:'afterMethod Index='+index,
              html:msg});
      }
      var beforeMethod=function(el,type,action,extraParams)
      {
          index++; 
          Ext.net.Notification.show({
              title:'Before Index='+index,
              html:""});
      }
      var failureMethod=function(response,result,control,type,action,extraParams)
      {
          index++;
          Ext.net.Notification.show({
              title:'failureMethod Index='+index,
              html:result.errorMessage});
        
           
      }
      var successMethod=function(response,result,control,type,action,extraParams)
      {
        index++;
        Ext.net.Notification.show({
          title:'successMethod Index='+index,
          html:result.extraParamsResponse.serverTime}); 
      }
      var completeMethod=function(success, response, result, control, type, action, extraParams)
      {
          index++;
          Ext.net.Notification.show({
              title:'completeMethod index='+index,
              html:success.toString()});
      }
      
    </script>

</head>
<body>
    <form id="form1" runat="server">
    <ext:ResourceManager ID="ResourceManager1" runat="server">
    </ext:ResourceManager>
    <ext:TextField ID="txtAuthor" runat="server" FieldLabel="笔者" Text="老虞" />
    <ext:Button ID="Button1" runat="server" Text="提交">
        <DirectEvents>
            <Click Failure="failureMethod" After="afterMethod" Before="beforeMethod" Complete="completeMethod"
                Success="successMethod" OnEvent="CheckAuthor" CleanRequest="false">
                <ExtraParams>
                    <ext:Parameter Name="author" Value="txtAuthor.getValue()" Mode="Raw" />
                    <ext:Parameter Name="blog" Value="http://www.cnblogs.com/howdo" Mode="Value" />
                    <ext:Parameter Name="time" Value="new Date()" Mode="Raw" />
                </ExtraParams>
            </Click>
        </DirectEvents>
    </ext:Button>
    </form>
</body>
</html>
这里可以通过查看Index的值判断方法执行顺序。 点击提交按钮，显示结果如下：未命名
posted @ 2011-05-07 20:20  老虞  阅读(4820)  评论(7)  编辑  收藏  举报