Stuck with List<>

Question

I have this:

public class accounts
{
    private string mName;
    private string mEmail;
    private string mAddress;

    public accounts(string Name,
    string Email,
    string Address)
    {
        this.mName = Name;
        this.mEmail = Email;
        this.mAddress = Address;
    }
}

then, somewhere else, I create this:

private static List<accounts> mlocalaccountList = new List<accounts>()

then I fill it like this:

mlocalaccountList.Add(new accounts("John Smith","johnsmith@mail.com","CA USA"));

Now, everything is OK, except, how can I access the list<> items??

Answer 1

foreach (accounts a in mlocalaccountList) { /* do something */ }

will iterate through the list.

Answer 2

Just combining the list of everyone's answers here so far:

1. Use an indexer into the list: mlocalaccountsList[i] will return the i'th element (0-based index, of course)
2. Iterate over the list using a loop. foreach(var account in mlocalaccountList) will easily provide you with each element in turn.

3. Use a LINQ query to filter out a specific element in the list. LINQ has two different styles of writing queries:

   var result = mlocalaccountList.Where(a => a.Name == "John Smith"))
   // or
   var result = from a in mlocalaccountList
            where a.Name == "John Smith"
            select a;
   

Answer 3

You can access them in a foreach loop:

foreach (var item in mlocalaccountList) {
  ...
}

however, since all members are private you cannot access them at all. Consider making properties for the private members or making them public.

You can also access them by index:

mlocalaccountList[0]

is the first item in the list.

Answer 4

Here's a link to the List<T> MSDN page. The Members page lists all the methods and properties that you have available. You can find help on ForEach for example.

The MSDN library (http://msdn.microsoft.com/en-us/library/) is an invaluable source of information on the classes and their members.

Answer 5

I would recommend using a foreach statement or just access by using an index variable mlocalaccount[index]

Answer 6

You can iterate over them:

foreach (var item in mlocalaccountList)
{
    // do stuff with item
}

You can use LINQ:

var usaItems = mlocalaccountList.Where(a => a.Address.Contains("USA"));
   // assuming you implement a public property for Address

Answer 7

Though I don't program in C#, I believe it is: mlocalaccountList[index] where index is an int.

Answer 8

Try mlocalaccountList[0] or

foreach (accounts acct in mlocalaccountList)
{
    // Do something with acct
}

Answer 9

Use a foreach statement:

foreach (accounts acc in mlocalaccountList)
{
 ... do something with acc
}

Answer 10

By indexer like an array

mlocalaccountList[0]