由于您使用
TcpClient，这意味着您正在检查打开的TCP端口。System.Net.NetworkInformation命名空间中有很多可用的好对象。
使用
IPGlobalProperties对象获取对象数组，
TcpConnectionInformation然后可以查询对象的端点IP和端口。
int port = 456; //<--- This is your value bool isAvailable = true; // evaluate current system tcp connections. This is the same information provided // by the netstat command line application, just in .Net strongly-typed object // form. We will look through the list, and if our port we would like to use // in our TcpClient is occupied, we will set isAvailable to false. IPGlobalProperties ipGlobalProperties = IPGlobalProperties.GetIPGlobalProperties(); TcpConnectionInformation[] tcpConnInfoArray = ipGlobalProperties.GetActiveTcpConnections(); foreach (TcpConnectionInformation tcpi in tcpConnInfoArray) { if (tcpi.LocalEndPoint.Port==port) { isAvailable = false; break; } } // At this point, if isAvailable is true, we can proceed accordingly.
