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一、CDN，需要调用PushObjectCache接口进行URL预热，以下是操作步骤：
1. 准备工作
首先，安装阿里云SDK NuGet包：
Install-Package Aliyun.NET.SDK.CDN -Version 3.0.0
Install-Package Aliyun.NET.SDK.Core -Version 3.0.02. 创建ASP.NET Web页面代码
CDNPreheat.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="CDNPreheat.aspx.cs" Inherits="YourNamespace.CDNPreheat" %><!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server"><title>阿里云CDN预热工具</title>
</head>
<body><form id="form1" runat="server"><div><h2>阿里云CDN预热</h2><div><label>URL列表(多个URL用逗号分隔):</label><br /><asp:TextBox ID="txtUrls" runat="server" TextMode="MultiLine" Rows="5" Columns="50"></asp:TextBox></div><div><label>预热区域:</label><asp:DropDownList ID="ddlArea" runat="server"><asp:ListItem Value="domestic" Text="中国内地"></asp:ListItem><asp:ListItem Value="overseas" Text="海外"></asp:ListItem><asp:ListItem Value="global" Text="全球"></asp:ListItem></asp:DropDownList></div><div><asp:Button ID="btnPreheat" runat="server" Text="提交预热" OnClick="btnPreheat_Click" /></div><div><asp:Label ID="lblResult" runat="server" ForeColor="Green"></asp:Label><asp:Label ID="lblError" runat="server" ForeColor="Red"></asp:Label></div></div></form>
</body>
</html>CDNPreheat.aspx.cs
using System;
using Aliyun.Acs.Cdn.Model.V20180510;
using Aliyun.Acs.Core;
using Aliyun.Acs.Core.Profile;namespace YourNamespace
{public partial class CDNPreheat : System.Web.UI.Page{// 阿里云配置信息private readonly string _accessKeyId = "your-access-key-id";private readonly string _accessKeySecret = "your-access-key-secret";private readonly string _regionId