Ext.Net 1.2.0_X.Js.Call方法

我们对在前台触发一个客户端事件,来操作界面元素,已经很熟悉,但这属于静态脚本范畴。往往有些时候,我们还需要动态脚本,也就是说,脚本在执行过程中需要的变量,是从服务器端获得的,那么X.Js.Call方法的作用,就是将服务器端变量传给客户端脚本,并执行脚本。

例子

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="ExtNetXJsCall._Default" %>

<%@ 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 id="Head1" runat="server">
    <title></title>

    <script type="text/javascript">
        var myAlert = function() {
            alert("警告");
        }
        var myAlert2 = function(id, val) {
            var txtField = Ext.getCmp(id);
            txtField.setValue(val);
            alert(txtField.getValue());
        }
    </script>

</head>
<body>
    <form id="form1" runat="server">
    <ext:ResourceManager ID="ResourceManager1" runat="server" />
    <ext:Button ID="Button1" runat="server" OnDirectClick="Button1_Click" Text="X.Js.Call一个参数的">
    </ext:Button>
    <ext:Button ID="Button2" runat="server" OnDirectClick="Button2_Click" Text="X.Js.Call两个参数的">
    </ext:Button>
    <ext:TextField ID="TextField1" runat="server" Text="">
    </ext:TextField>
    </form>
</body>
</html>

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Ext.Net;

namespace ExtNetXJsCall
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }
        protected void Button1_Click(object sender, DirectEventArgs e)
        {
            X.Js.Call("myAlert");
        }
        protected void Button2_Click(object sender, DirectEventArgs e)
        {
            string[] paras = new string[] { this.TextField1.ClientID, "警告" };
            X.Js.Call("myAlert2", paras);
        }
    }
}

说明

1,Button2将服务器端变量传给脚本方法“myAlert2”,脚本根据这个值设置页面控件,并显示。

 

下载 Demo

 

你可能感兴趣的:(.net)