控件注册脚本

控件前台
< input type = " text "  runat = " server "  id = " tbValue "   />
控件后台
     public   partial   class  WebUserControl1 : System.Web.UI.UserControl
     {
        protected void Page_Load(object sender, EventArgs e)
        {
            string script = string.Format(@"
    var {0}={{}};
    {0}.getValue=function()
    {{
        return document.getElementById('{1}').value;
    }}
", this.ClientID, this.tbValue.ClientID);

            Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "reg", script, true);

        }
    }
引用页面
     < div >
         < uc1:WebUserControl1 id = " WebUserControl1_1 "  runat = " server " >
         </ uc1:WebUserControl1 ></ div >
         < input type = " button "  onclick = " show() "  value = " click " />
     </ form >
    
     < script language = " javascript " >
    function show()
     {
    alert(<%=WebUserControl1_1.ClientID%>.getValue());
    }
     </ script >

转载于:https://www.cnblogs.com/lishenglyx/archive/2009/01/04/1368430.html