How to add into structure arrays

Question

I'm having troubles in adding into an array. I have created a class named Products:

public struct newProducts
{
    public string productBrand;
    public string productType;
    public string productName;
    public string productFlavour;
    public int productSize;
}

//Create an array of type newProducts
newProducts[] productList = new productList[];

and than I've created a function:

public newProducts AddProduct(string brand, string type, string name, string flavour, int size)
{
    //I don't know what to do here..

    return productList;
}

What I want to do is to append and store the brand, type, name, flavour and size values to the array

Basically the first time I call this function I'll enter those values and store it to index 0 and on the second call it will add them to index 1 .

Is this possible?

Unless you are a pro, and you really know what you are doing, don't use `struct` in C#. Use `class`. — xanatos, Apr 30 '15 at 20:26
Your class appears to be a struct. Structs and classes are very different constructs. — Brian Rasmussen, Apr 30 '15 at 20:26
Also you're trying to create an array of `productList`'s which is the variable name, not the type name. — Daniel Imms, Apr 30 '15 at 20:26
Arrays in .NET are "fixed" size. You don't add elements to them. Use `List` for doing it. — xanatos, Apr 30 '15 at 20:26
Pretty easy, really. Though if you use `List` it's easier. Also, word of advice, use Pascal-Casing for type-names. (`NewProducts`) And don't use `struct`s with `string`s. Generally a `struct` object should be small. (Less than 16 bytes by Microsoft's recommendation.) — Der Kommissar, Apr 30 '15 at 20:27

score 5 · Answer 1 · edited May 23 '17 at 12:28

5

You're better off using a List<T> instead of a T[]. That way, you can append values any time, without having to worry about resizing the array yourself

List<NewProduct> products = new List<NewProduct>();
products.Add(new Product { /* more code here */ });

Also, you might be coming from a lower level programming background, but as others mentioned, I'm not sure you really understand the true meaning of struct in C#. By looking at your code, you're looking for a class:

public class NewProduct
{
    public string ProductBrand { get; set; }
    public string ProductType { get; set; }
    public string ProductName { get; set; }
    public string ProductFlavour { get; set; }
    public int ProductSize { get; set; }
}

I'd suggest starting by reading Classes and Structs (MSDN) and What's the difference between struct and class in .NET?

edited May 23 '17 at 12:28

Community

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answered Apr 30 '15 at 20:27

Yuval Itzchakov

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dont read that article - you dont need a struct you need a class – pm100 Apr 30 '15 at 20:38
@pm100 Why shouldn't he read *that* (not sure which one you're referring to) article? – Yuval Itzchakov Apr 30 '15 at 20:40
OP is clearly a beginner - he does not need to use a struct. Maybe I should have said 'read that article - but you dont need a struct' – pm100 Apr 30 '15 at 20:45
@pm100 I know, I've stated that in the answer to be obvious :) No harm in doing some reading. – Yuval Itzchakov Apr 30 '15 at 20:46
I get the point thanks =) I'll go with a class, not sure if what I need to use is a list.. – Asım Gündüz Apr 30 '15 at 21:09
@user3456351 Why do you think a list doesn't fit your needs? – Yuval Itzchakov Apr 30 '15 at 21:12

score 0 · Answer 2 · answered May 04 '15 at 11:39

I've solved my issue, thank you for pointing out the differences between structures and classes, here's my approach:

I've changed the elements as Yuval described.. get and set methods..

than created a list of type newProduct class in the main form class

later on inside the main form class I created a method to insert data to the class elements and added it to the list! and it worked fine

thanks everyone in advance and sorry for my bad english

How to add into structure arrays

2 Answers2