C # language Regular usage

string phone = "";

String pattern @ "|\d{10}";

BOOL Rusurt = false;

Console.WriteLine ("Please enter phone number");

do{

Phone = Console.ReadLine ();

Rusurt = Rogex.ismatch (Phone,pattern);

Phone is the mobile number, pattern regular expression

if (!result)

Console.WriteLine ("Badnum,try Again");

}

while (!result)

Console.WriteLine ("Good");

Regular case studies:

static void Main (string[] args) {regex reg1 = new Regex (@ "\d+"); String str = REG1.            Replace ("123", "INSERT into table where id = $&");     Console.WriteLine (str);            Output insert into table where id = 123 Regex reg2 = new Regex (@ "1\+1= (\d)"); String str2 = Reg2.            Replace ("1+1=3", "not $ $");    Console.WriteLine (STR2);            The output is not 3 regex reg3 = new Regex (@ "1\+1= (? <result>\d)"); String str3 = Reg3.            Replace ("1+1=3", "Not ${result}");    Console.WriteLine (STR3);            Output is not 3 regex reg4 = new Regex (@ "\d+"); String STR4 = Reg4.  Replace ("123ABC", "Behind $ '");    Text after matching text Console.WriteLine (STR4); The output is followed by abcabc why is the output followed by ABCABC? Because $ ' means ABC, then replace 123 in the original string.            Do not know how many times this sentence regex reg5 = new Regex (@ "\d+"); String STR5 = Reg5.  Replace ("ABC123", "Front is $ '");            ABC Front is the ABC symbol is 1 left that Console.WriteLine (STR5); Regex reg6 = new Regex (@ "\d+");           String STR6 = Reg6.            Replace ("ABC123", "right raw input string $_");    Console.WriteLine (STR6);        The output to the right is the original string ABC123 Console.readkey (); }

C # language Regular usage