ChangeAtt.aspx
<%@ Page Language="C#" CompileWith="ChangeAtt.aspx.cs" ClassName="ChangeAtt_aspx" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"><html xmlns="http://www.w3.org/1999/xhtml" ><head ><title>客户端脚本</title><script language =javascript> function f1() { alert("函数[1]"); } function f2() { alert("函数[2]"); } function RefSwitch(message, context) { switch (context) { case "FirstCallServer": DoServerCallBack(message, context); break; case "GetServerTime": ShowServerTime(message, context); break; } } function FirstCallServer()//第一次调用服务器 { var message = 'FirstCallServer'; var context = 'FirstCallServer'; <%=sCallBackFunctionInvocation%> } function DoServerCallBack(Message, context) //服务器提示是否交互确认 { if (Message == "GetTime?") { var b = confirm("是否返回服务器时间?");//根据用户确认调用服务器操作 if (b) { var message = 'GetServerTime'; var context = 'GetServerTime'; <%=sCallBackFunctionInvocation%> } } } function ShowServerTime(timeMessage, context) { alert('服务器当前时间为:\n' + timeMessage); } function OnError(message, context) { alert('An unhandled exception has occurred:\n' + message); } </script>
<link href="Common/Css/StyleSheet.css" rel="stylesheet" type="text/css" /></head><body><form id="form1" runat="server"> <div> <span style="font-family: 宋体"><span style="font-family: 宋体"></span> <table width="529" style=" 224px; height: 71px"> <tr> <td style=" 766px; height: 16px"> <p> <span style="color: #ff0000; font-family: 宋体"><b>演示内容:</b></span></p> <ul> <li><span style="font-family: 宋体">改变客户端控件事件响应函数</span></li><li>改变客户端控件响应函数脚本</li> <li>无刷新调用服务端函数，并使用客户端对话框交互，将结果返回服务端</li> </ul> </td> </tr> <tr> <td style=" 766px; height: 51px;"> 演示改变客户端控件的响应函数<input type="button" class="Button" id="Button1" style=" 111px; " onclick = "f1();" value="客户端" runat="server" /> <asp:Button ID="Button2" Runat="server" Text="服务端" Width="114px" Height="20px" OnClick="Button2_Click" CssClass="Button" /></td> </tr> <tr> <td style=" 766px; height: 150px"> <p> </p> <p> 演示改变客户端控件的响应脚本</p> <asp:TextBox ID="TextBox1" Runat="server" Height="77px" Width="231px" TextMode="MultiLine">alert("服务端指定函数1");</asp:TextBox> <input type="button" class="Button" id="Button3" style=" 231px; " value="客户端激发函数" runat="server" /> <asp:Button ID="Button4" Runat="server" Width="111px" Text="服务端指定函数" OnClick="Button4_Click" CssClass="Button" /> <asp:Button ID="Button5" runat="server" Height="20px" Width="114px" Text="服务端指定并执行" OnClick="Button5_Click" CssClass="Button" /></td> </tr> <tr> <td style=" 766px; height: 57px; vertical-align: top;"> <br /> 演示无刷新B/S联动<input type="button" class="Button" id="Button6" style=" 231px; " onclick="FirstCallServer();" value="服务端无刷新调用,并用对话框交互" /> </td> </tr> </table> </span></div> </form></body></html>ChangeAtt.aspx.cs
using System;using System.Web.UI;public partial class ChangeAtt_aspx : ICallbackEventHandler{ public string sCallBackFunctionInvocation; void Page_Load(object sender, System.EventArgs e)
{
sCallBackFunctionInvocation = this.GetCallbackEventReference(this, "message", "RefSwitch", "context", "OnError");
} public string RaiseCallbackEvent(string eventArgument) { string[] aStr = eventArgument.Split(("\n").ToCharArray()); string commstr, param1, param2, param3; commstr = ""; param1 = ""; param2 = ""; param3 = ""; switch (aStr.Length) { case 0: commstr = ""; break; case 1: commstr = aStr[0]; break; case 2: commstr = aStr[0]; param1 = aStr[1]; break; case 3: commstr = aStr[0]; param1 = aStr[1]; param2 = aStr[2]; break; case 4: commstr = aStr[0]; param1 = aStr[1]; param2 = aStr[2]; param3 = aStr[3]; break; default: commstr = aStr[0]; param1 = aStr[1]; param2 = aStr[2]; param3 = aStr[3]; break; } string s = ""; switch (commstr) { case "FirstCallServer": s = "GetTime?"; break; case "GetServerTime": s = DateTime.Now.ToString(); break; } return s; } void Button2_Click(object sender, EventArgs e)//指定客户端响应事件变更 { if (Button2.ToolTip == "函数f2") { Button1.Attributes.Add("onclick", "f1();"); Button2.ToolTip = "函数f1"; } else { Button1.Attributes.Add("onclick", "f2();"); Button2.ToolTip = "函数f2"; } string scriptKey = "intoPopupMessage:" + this.UniqueID; if (!Page.IsStartupScriptRegistered(scriptKey) && Page.IsPostBack) { string scriptBlock = @"<script language=""JavaScript""> alert(""%%POPUP_MESSAGE%%""); </script>"; scriptBlock = scriptBlock.Replace("%%POPUP_MESSAGE%%", "函数变更为:"+Button2.ToolTip); Page.RegisterStartupScript(scriptKey, scriptBlock); } } void Button4_Click(object sender, EventArgs e)//指定客户端脚本 { string scriptKey = "intoServerScript:" + this.UniqueID; if (!Page.IsStartupScriptRegistered(scriptKey) && Page.IsPostBack) { string scriptBlock = @" <script language=""JavaScript""> function sf1() { "; scriptBlock += TextBox1.Text; scriptBlock += @" } </script> "; Page.RegisterStartupScript(scriptKey, scriptBlock); } Button3.Attributes.Add("onclick", "sf1();"); } void Button5_Click(object sender, EventArgs e)//指定客户端脚本并执行 { Button4_Click(null, null); string scriptKey = "doIntoServerScript:" + this.UniqueID; if (!Page.IsStartupScriptRegistered(scriptKey) && Page.IsPostBack) { string scriptBlock = @"<script language=""JavaScript""> sf1(); </script>"; Page.RegisterStartupScript(scriptKey, scriptBlock); } }
}