static void Main(string[] args)
{
ObservableCollections.OCMain();
//var names = new List<string>(6)
var names = new List <string>
{
"DVS Ram",
"Aditya",
"Srinath"
};
Console.WriteLine($"Count : {names.Count} Capacity : {names.Capacity}");
names.Add("Kishor");
Console.WriteLine($"Count : {names.Count} Capacity : {names.Capacity}");
names.Add("kira");
Console.WriteLine($"Count : {names.Count} Capacity : {names.Capacity}");
//index=6
//names.RemoveAt(6);
//removes one element that matchs input string
//names.Remove("kira");
foreach (var name in names)
{
Console.WriteLine(name);
}
//if list is big copying to array takes long
//string[] copy = names.ToArray();
//var copy = new ReadOnlyCollection<string>(names);
var copy = names.AsReadOnly();
//BadCode(copy);
var list = new NonBlankStringList();
list.Add("kishor");
list[0] = "";
list.Insert(1, "kk");
foreach (var name in list)
{
Console.WriteLine(name);
}
}
static void NonBlankStringListPractice()
{
NonBlankStringList list = new NonBlankStringList();
try
{
list.Add(" ");
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
list[0] = "item 0 changed";
list.Add("item 1");
list.Insert(2, "item 2 inserted");
foreach (var item in list)
{
Console.WriteLine(item);
}
}
static void Main(string[] args)
{
var presidents = new List <string> {
"Jimmy Carter",
"Ronald Reagan",
"George HW Bush",
"Bill Clinton",
"George W Bush",
"Barack Obama"
};
foreach (string president in presidents)
{
Console.WriteLine(president);
}
Console.WriteLine("Count = " + presidents.Count);
Console.WriteLine("Capacity = " + presidents.Capacity);
Console.WriteLine("\nAdd president");
presidents.Add("Donald Trump");
foreach (string president in presidents)
{
Console.WriteLine(president);
}
Console.WriteLine("Count = " + presidents.Count);
Console.WriteLine("Capacity = " + presidents.Capacity);
Console.WriteLine("\nRemove president");
presidents.RemoveAt(5);
foreach (string president in presidents)
{
Console.WriteLine(president);
}
Console.WriteLine("Count = " + presidents.Count);
Console.WriteLine("Capacity = " + presidents.Capacity);
Console.WriteLine("\nList as readonly");
try{
TryToRemoveFromList(presidents.AsReadOnly());
}catch (Exception ex) {
Console.WriteLine("Can't alter read only list: " + ex.Message);
}
Console.WriteLine("\nCollection<T> designed for inheritance. Don't allow empty strings in list");
var lst = new NonBlankStringList
{
"Item added at index 0",
"Item added at index 1"
};
try{
lst[0] = " ";
}catch (ArgumentException ex) {
Console.WriteLine("When try to add ' ' item to the list: " + ex.Message);
}
lst.Insert(2, "Item inserted at index 2");
foreach (string item in lst)
{
Console.WriteLine(item);
}
Console.WriteLine("\nObservableCollection - list that provides change notifications");
var p = new ObservableCollection <string>
{
"Jimmy Carter",
"Ronald Reagan",
"George HW Bush"
};
p.CollectionChanged += OnCollectionChanged;
p.Add("Bill Clinton");
p.Remove("Jimmy Carter");
foreach (string president in p)
{
Console.WriteLine(president);
}
}