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98 Microsoft Visual Studio 2010: A Beginner’s Guide
Making Classes Implement the Interface
To create a class, right-click the project in Solution Explorer, select Add | New Item, select
Code under the language branch in Installed Templates, and select the Class item. Name
the class Checking and click Add. Using the same procedure as Checking, add another
class, but name it Saving. Listings 4-3 and 4-4 show the two new classes.
Listing 4-3 Checking class that implements IAccount interface
C#:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace FirstProgram
{
class Checking : IAccount
{
public void Credit(decimal amount)
{
// implement checking logic
CurrentBalance += amount;
Console.Writeline("Added " + amount.ToString() +
" to Checking Account");
}
public void Debit(decimal amount)
{
// implement checking logic
CurrentBalance -= amount;
Console.Writeline("Debited " + amount.ToString() +
" from Checking Account");
}
public decimal CurrentBalance { get; set; }
}
}
VB:
Public Class Checking
Implements IAccount
Public Sub Credit(ByVal amount As Decimal) Implements IAccount.
Credit