DaniWeb Forum Index > Software Development > C#

C# RSS

C# Classes

Please support our C# advertiser: $4.95 a Month - ASP.NET Web Hosting – Click Here!

•

Join Date: Mar 2005

Posts: 30

Reputation: augie0216 is an unknown quantity at this point

Solved Threads: 0

augie0216

Offline

Light Poster

C# Classes

Feb 26th, 2006

I'm doing this in visual C#.net.I'm a nwebie so bare with me.
I'm creating a class I need to declare three fields: name,phone number, and birthday (month,day, and year). I'm not sure how to declare them. Is this correct

private string name
private string phone number
private int birthday

•

Join Date: Jul 2005

Posts: 483

Reputation: campkev is an unknown quantity at this point

Solved Threads: 19

campkev

Offline

Posting Pro in Training

Re: C# Classes

Feb 27th, 2006

can't have spaces so phone number needs to be changed to phoneNumber
also, you probably want to use DateTime instead of int for the birthday. Good luck and keep at it

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
private string name;
private string phoneNumber;
private DateTime birthday;
private string name;
private string phoneNumber;
private DateTime birthday;

•

Join Date: Mar 2005

Posts: 30

Reputation: augie0216 is an unknown quantity at this point

Solved Threads: 0

augie0216

Offline

Light Poster

Re: C# Classes

Feb 28th, 2006

Thanks for the help

•

Join Date: Jul 2005

Posts: 483

Reputation: campkev is an unknown quantity at this point

Solved Threads: 19

campkev

Offline

Posting Pro in Training

Re: C# Classes

Feb 28th, 2006

anytime. Good questions normally get good answers around here.

•

Join Date: Jan 2006

Posts: 275

Reputation: f1 fan is an unknown quantity at this point

Solved Threads: 11

f1 fan

Offline

Posting Whiz in Training

Re: C# Classes

Mar 5th, 2006

maybe consider using a property for each of these. It would appear that you will want something outside of your class to change the values so you dont want to make your fields public (or internal) as you have no control over the values in there.
To create a property you need a private field and a property for each as follows:

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
private string _name;
public string name
{
  get 
     {
       return _name;
      }
  set
    {
      //do some validation if you want
      _name = value;
      //do some other stuff if you need to based on the new value
    }
}
private string _name;
public string name
{
  get 
     {
       return _name;
      }
  set
    {
      //do some validation if you want
      _name = value;
      //do some other stuff if you need to based on the new value
    }
}

You have full control when someone changes the value now.
I use them alot as private properties for just in time instantiation (the field is populated the first time the property is used so it isnt taking up memory.
Also you can make it read only by not using the set part of the property (leave it out altogether)
You can also have different accessors so the get part can be public and the set part can be private or internal.

Hope it helps you