• GC, JIT
• C#
• Coherent Framework
• XSP….ASP+…ASP.NET!
• WinForms

• Mobile ASP.NET controls
• Built-in support for ODBC and Oracle databases.
• IPv6 support.

• ASP.NET for the Masses
  ○ Application Building Blocks
    § Parts, Authentication, Role Management, etc
  ○ Visual Web Developer
• Client Development
• ClickOnce!

• Windows CardSpace - Digital identity interface.
• Windows Presentation Foundation : WPF
  ○ Vector Graphics, Media and UI
  ○ Enters the age of UX
• Windows Communication Foundation : WCF
  ○ Unified messaging model
• Windows Workflow Foundation : WF
  ○ Coordinating work with durable applications

• Linq
• Expression Trees and Lamda Methods
• Extension Methods
• Paging Support for ADO.NET
• Managed Wrappers for WMI and AD
• Enhancements to WCF and WF
• System.CodeDom namespace
• ASP.NET AJAX
• WCF/WF
  ○ REST Services
  ○ Workflow Services
• Client
  ○ Sync
  ○ Client app services

• ASP.NET Dynamic Data
• ADO.NET
 ○ Entity Framework
 ○ Data Services (Astoria)
• WCF
 ○ AtomPub ServiceDocuments
• Client
 ○ Client Profile
 ○ Performance
   § Working set and startup time
• Silverlight 2
 ○ RTM end of 2008
 ○ Brings power of .NET to the web client
 ○ Media and RIA .NET platform

• Base Class Library Improvements
 ○ Managed Extensibility Framework
 ○ More Core Data Structures
 ○ I/O Improvements
• Parallel Computing
 ○ Task Parallel Library
 ○ Parallel Linq (PLINQ)
 ○ Coordination Data Structures (CDS)
• Client
 ○ WPF
  § Client Profile
  § Business Focused Controls
  § Win7 Advances (Multi-touch, etc)
 ○ ADO.NET
  § Entity Framework v2
    □ Code-First Development
    □ TDD Support
    □ Foreign-Key Support
 ○ ASP.NET
  § ASP.NET Dynamic Data Improvements
  § ASP.NET MVC
  § ASP.NET Dynamic Data for MVC
  § Extensible Caching Framework
 ○ WF & WCF
  § Fully Declarative Services
  § Workflow Enhancements
   □ New flowchart modeling
   □ Workflow Rules Integration
   □ … much more…
  § WCF Enhancements
   □ Durable Duplex
   □ WS-Discovery & UDP Channel
   □ In-Process Channel
  § RIA (Silverlight)
   □ Simplified N-tier development
   □ Business-focused framework

Int temp;
Int a=1;
temp=a;
a=2;
.
.
a=temp;

int main()
{
  MyClass One = new MyClass();
  MyClass Temp = new MyClass();
  // Set an initial value.
  One.Value = 10;
  One.Name = "Ten";
  // Save the state of the value.
  Temp.Value = One.Value;
  Temp.Name = One.Name;
  // Change the value.
  One.Value = 99;
  One.Name = "Ninety Nine";
  // Undo and restore the state.
  One.Value = Temp.Value;
  One.Name = Temp.Name;
}

dotnet new console

abstract class MementoBase
{
  protected Guid mementoKey = Guid.NewGuid();
  abstract public void SaveMemento(Memento memento);
  abstract public void RestoreMemento(Memento memento);
}

class Memento
{
    private Dictionary<Guid, object> stateList = new Dictionary<Guid, object>();
    public object GetState(Guid key)
    {
        return stateList[key];
    }
    public void SetState(Guid key, object newState)
    {
        stateList[key] = newState;
    }
    public Memento()
    {
    }
}

class ConcreteOriginator : MementoBase
{
  private int value = 0;
  public ConcreteOriginator(int newValue)
  {
    SetData(newValue);
  }
  public void SetData(int newValue)
  {
    value = newValue;
  }
  public void Speak()
  {
    Console.WriteLine("My value is " + value.ToString());
  }
  public override void SaveMemento(Memento memento)
  {
    memento.SetState(mementoKey, value);
  }
  public override void RestoreMemento(Memento memento)
  {
    int restoredValue = (int)memento.GetState(mementoKey);
    SetData(restoredValue);
  }
}

static void Main(string[] args)
{
  Memento memento = new Memento();
  // Create an originator, which will hold our state data.
  ConcreteOriginator myOriginator = new ConcreteOriginator("Hello World!", StateType.ONE);
  ConcreteOriginator anotherOriginator = new ConcreteOriginator("Hola!", StateType.ONE);
  ConcreteOriginator2 thirdOriginator = new ConcreteOriginator2(7);
  // Set some state data.
  myOriginator.Speak();
  anotherOriginator.Speak();
  thirdOriginator.Speak();
  // Save the states into our memento.
  myOriginator.SaveMemento(memento);
  anotherOriginator.SaveMemento(memento);
  thirdOriginator.SaveMemento(memento);
  // Now change our originators' states.
  myOriginator.SetData("Goodbye!", StateType.TWO);
  anotherOriginator.SetData("Adios!", StateType.TWO);
  thirdOriginator.SetData(99);
  myOriginator.Speak();
  anotherOriginator.Speak();
  thirdOriginator.Speak();
  // Restore our originator's state.
  myOriginator.RestoreMemento(memento);
  anotherOriginator.RestoreMemento(memento);
  thirdOriginator.RestoreMemento(memento);
  myOriginator.Speak();
  anotherOriginator.Speak();
  thirdOriginator.Speak();
  Console.ReadKey();
}

Hello World! I'm in state ONE
Hola! I'm in state ONE
My value is 7
Goodbye! I'm in state TWO
Adios! I'm in state TWO
My value is 99
Hello World! I'm in state ONE
Hola! I'm in state ONE
My value is 7

xmlns:dp="clr-namespace:SilverlightPersianDatePicker.Views;assembly=SilverlightPersianDatePicker"

<dp:PDatePicker x:Name="txtDate" TextBoxWidth="100"  Margin="5"  />