c# code to check mobile phone number format

Question

Sir,

 

 

I need your help to find a c# code to check the mobile phone number format with country code.

 

the phone number value in database column is  like this:- '91XXXXXXXXXX' .

 

Please provide me the proper code to check the 12 digit number  

 

the problem is in the line marked red.

 

My current code is:-

 

private static readonly Regex phoneNumber = new Regex(@"\d{2}-\d{3}-\d{3}-\d{4}");

 

public static bool VerifyPhoneNumber(string pNumber)
{
return phoneNumber.IsMatch(pNumber);
}

 

And   my function only need to execute if the format is correct.

 

I did:-

 

if(VerifyPhoneNumber(Phone))

{

 

}