How to determine whether the browser is a mobile phone browser

Public   Static   Bool  Ismobile (){  String Agent = (httpcontext. Current. Request. useragent + ""  ). Tolower (). Trim ();  If (Agent = "" | Agent. indexof ( "  Mozilla  " )! =- 1 | Agent. indexof ( " Opera  " )! =- 1 ) Return   False  ;  Return   True  ;}
 

 

 Public   Bool  Iswap (){  String Agent = (request. useragent + ""  ). Tolower (). Trim (); If (Agent = "" | Agent. indexof (  "  Mobile  " )! =- 1 | Agent. indexof (  "  MoBi  " )! =- 1 | Agent. indexof (  "  Nokia " )! =- 1 | Agent. indexof (  "  Samsung  " )! =- 1 | Agent. indexof (  "  Sonyericsson  " )! =- 1 | Agent. indexof (  "  Mot " )! =- 1 | Agent. indexof (  "  Blackberry  " )! =- 1 | Agent. indexof (  "  LG  " )! =- 1 | Agent. indexof (  "  HTC " )! =- 1 | Agent. indexof (  "  J2EE  " )! =- 1 | Agent. indexof (  "  Ucweb  " )! =- 1 | Agent. indexof (  "  Opera mini " )! =- 1 | Agent. indexof (  "  MoBi  " )! =- 1  ){  //  The terminal may be a mobile phone.              Return   True  ;}  Return   False ;}