C# 实现 VPN 连接：使用 DotRas 库创建和管理 VPN 连接

C#\u5b9e\u73b0\u0022VPN\u0022\u529f\u80fd\u53ef\u4ee5\u4f7f\u7528\u0022DotRas\u0022\u5e93\uff0c\u8be5\u5e93\u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u5355\u7684\u65b9\u5f0f\u6765\u521b\u5efa\u548c\u7ba1\u7406\u0022VPN\u0022\u8fde\u63a5\u3002\n\n\u9996\u5148\uff0c\u4f60\u9700\u8981\u6dfb\u52a0\u4e00\u4e2a\u5bf9\u0022DotRas\u0022\u5e93\u7684\u53c2\u8003\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7\u0022NuGet\u0022\u5305\u7ba1\u7406\u5668\u6765\u6dfb\u52a0\u53c2\u8003\uff0c\u6216\u8005\u624b\u52a8\u4e0b\u8f7d\u5e76\u6dfb\u52a0\u0022DLL\u0022\u53c2\u8003\u3002\n\n\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u4ee3\u7801\uff0c\u6f14\u793a\u4e86\u5982\u4f55\u521b\u5efa\u548c\u8fde\u63a5\u4e00\u4e2a\u0022VPN\u0022\u8fde\u63a5\uff1a\n\ncsharp\nusing System;\nusing DotRas;\n\nnamespace VpnSample\n{\n class Program\n {\n static void Main(string[] args)\n {\n // \u521b\u5efa\u4e00\u4e2a\u0022RasDialer\u0022\u5bf9\u8c61\n using (var dialer = new RasDialer())\n {\n // \u8bbe\u7f6e\u0022VPN\u0022\u8fde\u63a5\u7684\u914d\u7f6e\u4fe1\u606f\n var entryName = \'MyVPN\';\n var serverAddress = \'vpn.example.com\';\n var username = \'username\';\n var password = \'password\';\n\n // \u521b\u5efa\u4e00\u4e2a\u0022RasEntry\u0022\u5bf9\u8c61\n var entry = RasEntry.CreateVpnEntry(entryName, serverAddress, RasVpnStrategy.PptpOnly, RasDevice.GetDeviceByName(\'(PPTP)\', RasDeviceType.Vpn));\n\n try\n {\n // \u5c1d\u8bd5\u8fde\u63a5\u0022VPN\u0022\n dialer.EntryName = entryName;\n dialer.PhoneBookPath = RasPhoneBook.GetPhoneBookPath(RasPhoneBookType.AllUsers);\n dialer.Credentials = new System.Net.NetworkCredential(username, password);\n dialer.Dial();\n Console.WriteLine(\'VPN connected successfully.\');\n }\n catch (Exception ex)\n {\n Console.WriteLine(\'Failed to connect VPN: \' + ex.Message);\n }\n }\n }\n }\n}\n\n\n\u4e0a\u8ff0\u4ee3\u7801\u4f7f\u7528\u0022PPTP\u0022\u534f\u8bae\u521b\u5efa\u4e86\u4e00\u4e2a\u0022VPN\u0022\u8fde\u63a5\uff0c\u5e76\u4f7f\u7528\u7ed9\u5b9a\u7684\u7528\u6237\u540d\u548c\u5bc6\u7801\u8fdb\u884c\u8ba4\u8bc1\u3002\u4f60\u53ef\u4ee5\u6839\u636e\u9700\u8981\u4fee\u6539\u8fde\u63a5\u7c7b\u578b\u548c\u5176\u4ed6\u8fde\u63a5\u53c2\u6570\u3002\n\n\u8bf7\u6ce8\u610f\uff0c\u8fd0\u884c\u6b64\u4ee3\u7801\u9700\u8981\u7ba1\u7406\u89d2\u8272\u3002