C # Determine if the port is occupied

This is mainly used in the following: namespace System.Net.NetworkInformation defines a class named Ipglobalproperties

Specific code

1     classPorthelper2     {3 4         #regionWhether a port of the specified type is already in use5         /// <summary>6         ///whether a port of the specified type is already in use7         /// </summary>8         /// <param name= "Port" >Port number</param>9         /// <param name= "type" >Port Type</param>Ten         /// <returns></returns> One          Public BOOLPortinuse (intport,porttype type) A         { -             BOOLFlag =false; -Ipglobalproperties Properties =ipglobalproperties.getipglobalproperties (); theipendpoint[] Ipendpoints =NULL; -             if(Type = =porttype.tcp) -             { -Ipendpoints =Properties. Getactivetcplisteners (); +             } -             Else +             { AIpendpoints =Properties. Getactiveudplisteners (); at             } -             foreach(IPEndPoint IPEndPointinchipendpoints) -             { -                 if(IPEndPoint. Port = =Port) -                 { -Flag =true; in                      Break; -                 } to             } +Ipendpoints =NULL; -Properties =NULL; the             returnFlag; *         } $         #endregionPanax Notoginseng  -     } the  +     #regionPort Enumeration Type A     /// <summary> the     ///Port Type +     /// </summary> -     enumPortType $     { $         /// <summary> -         ///TCP Type -         /// </summary> the TCP, -         /// <summary>Wuyi         ///UDP Type the         /// </summary> - UDP Wu     } -     #endregion

C # Determine if the port is occupied