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phone number formatting issue

Member 9014981 asked:

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try to use the following method to pass the format to my phone number,butis not work
can anybody explain

the error i have is

'string' does not contain a definition for 'substring' and no extension method 'substring' accepting a first argument of type 'string' could be found (are you missing a using directive or an assembly reference?)

the model
public class ViewModel


       private string formatPhoneNumber(string phone)

           //should return (123)456-7890
           return string.Format("({0})-{1}-{2}");

Tags: C#, ASP.NET, Phone, controller, formating


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