怎么向后台传值_ASP.NET

如何向后台传值?
function Abc()
{
var thestr=document.getElementById('div1').InnerText;
//<%=button(thestr)%>
}
public void button(string str)
{
label1.Text = str;
}
怎样把thestr传给函数button呢？(拒绝用hidden)

------解决方案--------------------------------------------------------

直接用JS撒 lable1是label是还是button?

JScript code

function Abc() {       var thestr=document.getElementById('div1').InnerText;       var lab=document.getElementById(label1);      lab.innerText=thestr;      //如果是button lab.value=thethr}
------解决方案--------------------------------------------------------
演示异步回调方法实现,调试通过,纯做演示
C# code<%@ Page Language="C#" %><!--要实现异步回调接口--><%@ Implements Interface="System.Web.UI.ICallbackEventHandler" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server">    // 处理以控件为目标的回调事件    public void RaiseCallbackEvent(String eventArgument)    {        //调用public void button(string str),eventArgument就是传过来的div.innerText        button(eventArgument);    }    // 返回以控件为目标的回调事件的结果    public string GetCallbackResult()    {        //返回给客户端的数据(arg),这里不用返回，只是演回调用public void button(string str)        return string.Empty;    }    //你要传的button函数    public void button(string str)    {        this.Label1.Text = str;    }    protected void Page_Load(object sender, EventArgs e)    {        ClientScriptManager cs = Page.ClientScript;        //这是注册接收后台事件结果的客户端脚本        String cbReference1 = cs.GetCallbackEventReference(this, "arg",                   "ReceiveServerData","");        //动态注册        String callbackScript1 = "function Abc(arg, context) {" +            cbReference1 + "; }";        cs.RegisterClientScriptBlock(this.GetType(), "Abc",callbackScript1, true);    }</script><html xmlns="http://www.w3.org/1999/xhtml" ><head runat="server">    <title>无标题页</title>    <script type="text/javascript">    　　//接收后台事件结果的客户端脚本        function ReceiveServerData(arg, context)        {                    }    </script></head><body>    <form id="form1" runat="server">    <div>        <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>        <!--input button点击-->        <input id="Button1" type="button" value="button" onclick="Abc(document.getElementById('div1').innerText,'')" />    </div>    </form>    <div id="div1">xxxxxxxx</div></body></html>