同样的代码为什么在母版页上出错？
想实现无刷新查询后台数据，在网上找到一些代码：前台代码：
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<span id="king">
<asp:DropDownList ID="drpList1" runat="server" Width="171px">
<asp:ListItem>asa</asp:ListItem>
</asp:DropDownList>
</span>
<a href="javascript:CallTheServer1('', king)">变更</a>
</form>
</body>
</html>
后台代码：
public partial class WebForm3 : System.Web.UI.Page, System.Web.UI.ICallbackEventHandler
{
public string str = string.Empty;
// Define method that processes the callbacks on server.
public void RaiseCallbackEvent(String eventArgument)
{
str = eventArgument;
}
// Define method that returns callback result.
public string GetCallbackResult()
{
string[] str = new string[] { "11", "22", "33", "44" };
ListItem item = null;
this.drpList1.Items.Clear();
foreach (string tmp in str)
{
item = new ListItem(tmp, tmp);
this.drpList1.Items.Add(item);
}
StringWriter writer1 = new StringWriter(System.Globalization.CultureInfo.InvariantCulture);
HtmlTextWriter writer2 = new HtmlTextWriter(writer1);
this.drpList1.RenderControl(writer2);
writer2.Flush();
writer2.Close();
return writer1.ToString();
}
protected void Page_Load(object sender, EventArgs e)
{
ClientScriptManager cs = Page.ClientScript;
//定义客户端成功调用后的处理函数
StringBuilder context1 = new StringBuilder();
context1.Append("function ReceiveServerData1(arg, context)");
context1.Append("{");
context1.Append("context.innerHTML = arg;");
context1.Append("}");
// 定义错误处理函数
StringBuilder context2 = new StringBuilder();
context2.Append("function ProcessCallBackError(arg, context)");
context2.Append("{");
context2.Append("alert('An error has occurred.');");
context2.Append("}");
//向客户端注册脚本
cs.RegisterClientScriptBlock(this.GetType(), "ReceiveServerData1",
context1.ToString(), true);
cs.RegisterClientScriptBlock(this.GetType(), "ProcessCallBackError",
context2.ToString(), true);
//返回客户调用服务事件的脚本代码，结果如下:WebForm_DoCallback('__Page',arg,ReceiveServerData1,function ReceiveServerData1(arg, context){king.innerHTML = arg;},ProcessCallBackError,false);
//其中的content为king客户端king对象
String cbReference1 = cs.GetCallbackEventReference("'" +
Page.UniqueID + "'", "arg", "ReceiveServerData1", "context",
"ProcessCallBackError", false);
String callbackScript1 = "function CallTheServer1(arg, context) {" +
cbReference1 + "; }";
// 注册触发回调事件的脚本块
cs.RegisterClientScriptBlock(this.GetType(), "CallTheServer1",
callbackScript1, true);
}
}
引用：
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.IO;
using System.Text;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
用在母版页上，提示错误！不在母版页上正常使用，请高手指点！ --------------------编程问答-------------------- 母版页和一般的页面本身就不一样的吧，一个继承的System.Web.UI.MasterPage，一个继承的System.Web.UI.Page比如这段
WebForm_DoCallback('__Page',arg,ReceiveServerData1,function ReceiveServerData1(arg, context){king.innerHTML = arg;},ProcessCallBackError,false);
//其中的content为king客户端king对象
String cbReference1 = cs.GetCallbackEventReference("'" +
Page.UniqueID + "'", "arg", "ReceiveServerData1", "context",
"ProcessCallBackError", false);
里面的Page估计就有问题吧
--------------------编程问答-------------------- 那怎么处理啊？多谢指点! --------------------编程问答-------------------- --------------------编程问答-------------------- 自己顶顶！ --------------------编程问答-------------------- --------------------编程问答-------------------- --------------------编程问答-------------------- 一夜静悄悄！ --------------------编程问答-------------------- 你将这些代码放入普通页面上，然后在public string GetCallbackResult()函数中调用母版页的代码就可以啦，不知道是否能满足你的需要？ --------------------编程问答-------------------- 多谢指点，问题解决啦。但是，查询出来的数据，在后台不能找到也，怎么解决呢？ --------------------编程问答-------------------- 咋没人回哪 --------------------编程问答-------------------- 放假啦，帖子也没人回了。
补充：.NET技术 , ASP.NET
