c# - Checking String contains only number -

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regex numbers only 14 answers how identify if string number? 18 answers

how check string number or not. verifying mobile number codes in should have 10 digits , in numerical format.

string str="9848768447" if(str.length==10 && here need status check string number or not) { //code goes here }

i new programming. please help me

use int.tryparse:

int i; if(str.length==10 && int.tryparse(str, out i)) { //code goes here }

another way has issues unicode digits using char.isdigit:

if(str.length==10 && str.all(char.isdigit)) { }

Three