Windows Phone 7 gets the current network type (whether the device is connected to the PC through Zune)

///   <Summary>  
  ///  Determine whether the Network is available  
  ///   </Summary>  
  ///   <Returns>  True or false  </Returns>  
  Public   Static   Bool Querynetworkstatus ()
{
 Return Microsoft. Phone. net. networkinformation. networkinterface. getisnetworkavailable (); //  Whether the current network is available  
 }
 ///   <Summary>  
  ///  Obtain the current network type  
  ///   </Summary>  
 ///   <Returns> </returns>  
  Public   Static Type querynetworktype ()
{
Networkinterfacetype _ currentnetworktype = Microsoft. Phone. net. networkinformation. networkinterface. networkinterfacetype; //  Obtain the current network type  
 Type type;
 Switch (_ Currentnetworktype)
{
 Case Networkinterfacetype. mobilebroadbandcdma:
 //  "CDMA network ";  
 Type = type. CDMA network;
 Break ;
 Case Networkinterfacetype. mobilebroadbandgsm:
 //  "Csm network ";  
 Type = type. CSM network;
 Break ;
 Case Networkinterfacetype. wireless80211:
//  "Wireless network ";  
 Type = type. Wireless Network;
 Break ;
 Case Networkinterfacetype. Ethernet:
 //  "Ethernet network ";  
 Type = type. Ethernet network;
 Break ;
 Case Networkinterfacetype. None:
 // "Network unavailable ";  
 Type = type. The network is unavailable;
 Break ;
 Default :
 //  "Other networks ";  
 Type = type. Other networks;
 Break ;
}
 Return Type;
}
 ///   <Summary> 
  ///  Network Type  
  ///   </Summary>  
  Public   Enum Type
{
CDMA network,
CSM network,
Wireless Network,
Ethernet network,
Network unavailable,
Other networks,
}
}
}

to determine whether the current mobile phone is connected to the PC through Zune, debug it under the device. The connection type of the current simulator is wireless80211