make an array of classes in c#

This is a discussion on make an array of classes in c# within the C# Programming forums, part of the General Programming Boards category; Dear Friends, how can I make an array of classes in c#? please give me a typical syntax. tnx......

  1. #1
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    make an array of classes in c#

    Dear Friends,

    how can I make an array of classes in c#?
    please give me a typical syntax. tnx...

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    List instead of array

    I personally prefer to use lists rather than arrays.

    Suppose you have this class:

    Code:
    using System.Drawing;
    
    namespace MyProgram
    {
        public class Car
        {
            public Color Color;
    	public string Make;
            public string Model;
        }
    }
    I would create a list that can hold different cars:
    Code:
    List<Car> NewCars = new List<Car>();
    Then you can create a method that creates your different "cars" and adds them to the list:


    Code:
    private void CreateCar(Color color, string make, string model)
    {
        Car car = new Car();
        car.Color = color;
        car.Make = make;
        car.Model = model;
    
        NewCars.Add(car);
    }
    Hope that helps. Of course, you would be better off setting up a constructor and passing the information that is needed to make that instance of the class, rather than making everything public, but I used this just to demonstrate the idea.

  3. #3
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    If you want to make an array of classes it would be like this:
    Code:
    Car[] carArray = new Car[10];
    
    for(int i = 0;i < carArray.Length;++i)
      carArray[i] = new Car();
    If you understand what you're doing, you're not learning anything.

  4. #4
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    Quote Originally Posted by Phyxashun View Post
    I personally prefer to use lists rather than arrays.

    Suppose you have this class:

    Code:
    using System.Drawing;
    
    namespace MyProgram
    {
        public class Car
        {
            public Color Color;
    	public string Make;
            public string Model;
        }
    }
    I would create a list that can hold different cars:
    Code:
    List<Car> NewCars = new List<Car>();
    Then you can create a method that creates your different "cars" and adds them to the list:


    Code:
    private void CreateCar(Color color, string make, string model)
    {
        Car car = new Car();
        car.Color = color;
        car.Make = make;
        car.Model = model;
    
        NewCars.Add(car);
    }
    Hope that helps. Of course, you would be better off setting up a constructor and passing the information that is needed to make that instance of the class, rather than making everything public, but I used this just to demonstrate the idea.
    Thank you for codes,

  5. #5
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    Quote Originally Posted by itsme86 View Post
    If you want to make an array of classes it would be like this:
    Code:
    Car[] carArray = new Car[10];
    
    for(int i = 0;i < carArray.Length;++i)
      carArray[i] = new Car();
    Thank you. Your codes raise a question. Does the code" carArray[i] = new Car();" create sub-classes under class car or make objects regarding class car?

    my mean was to save several various classes with different tasks as a array and then using "foreach" to recall them.

  6. #6
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    Quote Originally Posted by alireza View Post
    Thank you. Your codes raise a question. Does the code" carArray[i] = new Car();" create sub-classes under class car or make objects regarding class car?

    my mean was to save several various classes with different tasks as a array and then using "foreach" to recall them.
    The particular line you are quoting creates a car object and adds it to the array object created in the first line..

    All of the car objects will have the same variables, properties and methods defined in the car class.
    Last edited by Phyxashun; 10-27-2010 at 11:15 AM. Reason: Fixing what I wrote

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    Thank you for anwsering to me.

  8. #8
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    Quote Originally Posted by alireza View Post
    my mean was to save several various classes with different tasks as a array and then using "foreach" to recall them.
    If you want to do that, you just need to make sure your array is of a common base type:
    Code:
    Car[] carArray = new Car[10];
    
    carArray[0] = new Ford();
    carArray[1] = new Mustang();
    carArray[2] = new Chevy();
    ...
    If, for instance, you had a Mustang class that derived from a Ford class that derived from a Car class.
    If you understand what you're doing, you're not learning anything.

  9. #9
    essence of digital xddxogm3's Avatar
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    I apologize if this is beyond the scope of your question, but how about you use a factory pattern?

    Exploring the Factory Design Pattern
    "Hence to fight and conquer in all your battles is not supreme excellence;
    supreme excellence consists in breaking the enemy's resistance without fighting."
    Art of War Sun Tzu

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