![HashTable
Hashtable table = new Hashtable();
table.Add(1,"one value");
table.Add(2, "Two value");
table.Add(3, "Three value");
foreach (var item in table.Keys )
{
Console.WriteLine(table [item]);
}
table.Remove(2);
9](https://image.slidesharecdn.com/genericcollections-190430055632/85/C-Generic-collections-9-320.jpg)
![Dictionary
Dictionary<int, string> CityNames = new Dictionary<int, string>();
CityNames.Add(1,"asdasd");
CityNames.Add(2, "gggg");
CityNames.Add(3, "rtyy");
foreach (int key in CityNames .Keys )
{
Console.WriteLine( "City Name {0}",CityNames [key]);
}
10](https://image.slidesharecdn.com/genericcollections-190430055632/85/C-Generic-collections-10-320.jpg)
C# Generic collections
- 2. • What Are Collections? • What Are Generic Collections? 2
- 3. What Are Collections? • Collections store arbitrary objects in a structured manner. Types of collections available within the .NET Framework are: Arrays Advanced collections Non-generic collections Generic collections 3
- 4. What Are Generic Collections? • Generic collections support the storage of both value types and reference types. Only a single data type is allowed to be stored inside a generic collection. Following are the generic collection types: Generic Dictionary Generic List Generic Stack Generic Queue Generic LinkedList Generic Interface 4
- 5. • Generic List class Provides methods to search, sort, and manipulate the elements of a generic list. • Generic Stack Class The generic Stack class represents a variable size LIFO collection of objects of same data type. • Generic Queue Class The generic Queue class represents a variable size FIFO collection of elements of same data type. 5
- 6. • The .NET Framework provides the following classes in the System.Collections.Generic namespace that help you to add name and value pairs to a collection: Dictionary SortedList SortedDictionary 6
- 7. Examples Generic List List<T> Var_name = new List<T>(); Generic Stack Stack<string> names = new Stack<string>(); names.Push("A"); names.Push("B"); foreach (string name in names) { Console.WriteLine(name); } 7
- 8. Generic Queue Queue<int> ticketNos =new Queue<int>(); ticketNos.Enqueue(100); ticketNos.Enqueue(200); ticketNos.Enqueue(300); ticketNos.Enqueue(400); foreach (int tno in ticketNos ) { Console.WriteLine(tno); } 8
- 9. HashTable Hashtable table = new Hashtable(); table.Add(1,"one value"); table.Add(2, "Two value"); table.Add(3, "Three value"); foreach (var item in table.Keys ) { Console.WriteLine(table [item]); } table.Remove(2); 9
- 10. Dictionary Dictionary<int, string> CityNames = new Dictionary<int, string>(); CityNames.Add(1,"asdasd"); CityNames.Add(2, "gggg"); CityNames.Add(3, "rtyy"); foreach (int key in CityNames .Keys ) { Console.WriteLine( "City Name {0}",CityNames [key]); } 10
- 11. Thank You 11