C # Validation Chinese

There are many ways to verify Chinese in C #, here are a few of them for reference, and the validation of regular expressions is not written here, there is a chance to make it up later.

Method One:

Private BOOLIschina (stringmsg) {    stringtemp;  for(inti =0; I < Msg. Length; i++) {Temp= Msg. Substring (I,1); byte[] Ser = encoding.getencoding ("gb2312").        GetBytes (temp); if(Ser. Length = =2)        {            return true; }    }    return false;}

Method Two:

Private BOOLCheckchina (stringinput) {    intCode =0; intChfrom = Convert.ToInt32 ("4e00", -);//Range (0X4E00~0X9FFF) converted to int (chfrom~chend)    intChend = Convert.ToInt32 ("9fff", -);  for(inti =0; I < input. Length; i++) {Code= CHAR.CONVERTTOUTF32 (Input,1);//gets the character Unicode encoding at the index specified in string input        if(Code >= chfrom && Code <=chend) {            return true;//when code returns true within the Chinese range        }    }    return false;}

Method Three:

 Public BOOLISCHINA1 (stringCString) {    BOOLBoolvalue =false;  for(inti =0; i < cstring.length; i++)    {        if(Convert.ToInt32 (Convert.tochar (cstring.substring (i,1))) <convert.toint32 (Convert.tochar ( -)) {boolvalue=false; }        Else        {            returnBoolvalue =true; }    }    returnBoolvalue;}

C # Validation Chinese