updatepanel.aspx <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="updatepanel.aspx.cs" Inherits="Demo.updatepanel" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="https://www.w3.org/1999/xhtml" ><head runat="server"> <title>UpdatePanel实现无刷新DropdownList</title></head><body> <form id="form1" runat="server"> <div> <asp:ScriptManager ID ="sm_test" runat ="server" ></asp:ScriptManager> <asp:UpdatePanel runat ="server" ID ="up_test" > <ContentTemplate > <asp:DropDownList ID ="ddl_test" runat ="server" OnSelectedIndexChanged ="ddl_test_changed" AutoPostBack ="true" > <asp:ListItem Text ="1"></asp:ListItem> <asp:ListItem Text ="2"></asp:ListItem> </asp:DropDownList> <%--Textbox发布放在UpdatePanel--%> <asp:TextBox ID ="txt_test" runat ="server" Text ="10" ></asp:TextBox> </ContentTemplate> </asp:UpdatePanel> </div> </form></body></html><%@ Page Language="C#" AutoE 你的当前访问异常,请进行认证后继续阅读剩余内容。 提交