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📄 provincecityarea.aspx

📁 三层无刷新级联选择省市区县 C#语言开发SQL 数据库(含全国完整数据库)Ajax无刷新三级联动
💻 ASPX
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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ProvinceCityArea.aspx.cs" Inherits="_Default" EnableEventValidation="false" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>省市区县（含完整数据库）无刷新三级联动选择列表</title>
</head>
<body style="text-align: center">
    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server">
        </asp:ScriptManager>
    <div style="text-align: center">
        <asp:UpdatePanel ID="UpdatePanel1" runat="server">
            <ContentTemplate>
               
                <asp:DropDownList ID="ddlProvince" runat="server" SkinID="ddlSkin">
                </asp:DropDownList>
               
                <asp:DropDownList ID="ddlCity" runat="server" SkinID="ddlSkin">
                </asp:DropDownList>
               
                <asp:DropDownList ID="ddlVilliage" runat="server" SkinID="ddlSkin">
                </asp:DropDownList>
                
                <ajax:CascadingDropDown ID="CascadingDropDown1_Province" runat="server" TargetControlID="ddlProvince" 
                ServicePath="SNWebService.asmx" ServiceMethod="GetProvinceContents" Category="Province" 
                PromptText="请选择省份" LoadingText="省份加载中...">
                </ajax:CascadingDropDown>
                
                <ajax:CascadingDropDown ID="CascadingDropDown2_City" runat="server" ParentControlID="ddlProvince" 
                ServicePath="SNWebService.asmx" ServiceMethod="GetCityContents" Category="City" 
                TargetControlID="ddlCity" PromptText="请选择城市" LoadingText="城市加载中...">
                </ajax:CascadingDropDown>
               
                <ajax:CascadingDropDown ID="CascadingDropDown3_Villiage" runat="server" ParentControlID="ddlCity"
                LoadingText="区县加载中..."  PromptText="请选择区县" Category="Villiage" 
                ServiceMethod="GetViliageContents" ServicePath="SNWebService.asmx" TargetControlID="ddlVilliage">
                </ajax:CascadingDropDown>
                
            </ContentTemplate>
        </asp:UpdatePanel>
       
        </div>
    </form>
</body>
</html>

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