C# ONVIF如何进行设备发现

在C#中使用ONVIF进行设备发现的步骤如下：

1. 导入ONVIF的相关命名空间：

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Net; using System.ServiceModel; using System.ServiceModel.Channels; using System.Xml; 

2. 创建一个ONVIF设备发现类，并实现设备发现的方法：

public class ONVIFDeviceDiscovery {     public static List<string> DiscoverDevices()     {         List<string> devices = new List<string>();          // 创建UDP广播终结点         EndpointAddress discoveryEndPointAddress = new EndpointAddress("soap.udp://239.255.255.250:3702");          // 创建消息工厂         MessageFactory messageFactory = new MessageFactory();          // 创建消息版本         AddressingVersion addressingVersion = AddressingVersion.WSAddressing10;          // 创建消息头         MessageHeader unicastHeader = MessageHeader.CreateHeader("Unicast", "", "");         MessageHeader multicastHeader = MessageHeader.CreateHeader("Multicast", "", "");          // 创建绑定元素         BindingElement[] bindingElements = new BindingElement[2];         bindingElements[0] = new TextMessageEncodingBindingElement();         bindingElements[1] = new HttpTransportBindingElement();          // 创建自定义绑定         CustomBinding customBinding = new CustomBinding(bindingElements);          // 创建ChannelFactory         ChannelFactory<IDiscoveryProxy> factory = new ChannelFactory<IDiscoveryProxy>(customBinding, discoveryEndPointAddress);          // 创建Channel         IDiscoveryProxy proxy = factory.CreateChannel();         factory.Open();          // 发送消息         Message message = messageFactory.CreateMessage(addressingVersion, "http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous", multicastHeader, new DiscoveryMessage());         Message reply = proxy.Discover(message);          // 解析响应         if (reply != null)         {             XmlDocument xmlDoc = new XmlDocument();             xmlDoc.Load(reply.GetReaderAtBodyContents());             XmlNodeList nodeList = xmlDoc.GetElementsByTagName("XAddrs");              foreach (XmlNode node in nodeList)             {                 devices.Add(node.InnerText);             }         }          // 关闭通道和工厂         factory.Close();          return devices;     } } 

3. 在主程序中调用设备发现方法并输出设备信息：

class Program {     static void Main(string[] args)     {         List<string> devices = ONVIFDeviceDiscovery.DiscoverDevices();          foreach (string device in devices)         {             Console.WriteLine("Discovered device: " + device);         }          Console.ReadLine();     } } 

通过以上步骤，您可以在C#中使用ONVIF进行设备发现，并获取到设备的地址信息。