C#爬取微博热搜榜单：无需第三方库的示例代码

以下是使用C#编写的示例代码，可以帮助您爬取微博热搜榜单：\n\ncsharp\nusing System;\nusing System.Net;\n\nclass Program\n{\n static void Main(string[] args)\n {\n // 设置请求头信息\n WebClient client = new WebClient();\n client.Headers.Add("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3");\n\n try\n {\n // 发送GET请求并获取响应内容\n string url = "https://s.weibo.com/top/summary?cate=realtimehot";\n string response = client.DownloadString(url);\n\n // 提取热搜榜单内容\n int startIndex = response.IndexOf("<tbody>");\n int endIndex = response.IndexOf("</tbody>");\n string hotListContent = response.Substring(startIndex, endIndex - startIndex);\n\n // 提取每个热搜条目\n string[] hotItems = hotListContent.Split(new string[] { "<tr" }, StringSplitOptions.RemoveEmptyEntries);\n\n foreach (string item in hotItems)\n {\n // 提取热搜名称和热度\n int nameStartIndex = item.IndexOf("blank>") + 7;\n int nameEndIndex = item.IndexOf("</a>");\n string name = item.Substring(nameStartIndex, nameEndIndex - nameStartIndex);\n\n int heatStartIndex = item.IndexOf("span class="">" + 14;\n int heatEndIndex = item.IndexOf("</span>");\n string heat = item.Substring(heatStartIndex, heatEndIndex - heatStartIndex);\n\n Console.WriteLine("热搜名称：" + name);\n Console.WriteLine("热度：" + heat);\n Console.WriteLine("--------------------------------------");\n }\n }\n catch (Exception ex)\n {\n Console.WriteLine("发生错误：" + ex.Message);\n }\n\n Console.ReadLine();\n }\n}\n\n\n该代码使用WebClient类发送GET请求并获取微博热搜榜单页面的HTML内容，然后利用字符串处理函数提取出每个热搜条目的名称和热度。请注意，由于微博网页结构可能会有变化，该代码可能需要根据实际情况进行适当调整。