C #5 new features brought about by 5.0

First, bind the operator,: =:

ComboBox1.Text: =: textBox1.Text; // bind the content of the text box to the drop-down box.

 

Second, generic constructors with parameters:

Public class T MyClass: T: class, new ()

// We might have

Public class T MyClass: T: class, new (int)

 

Third: supports the null type operation:

Int x? = Null;

Int y? = X + 40;

 

Myobject obj = null;

Mytherobj obj2 = obj. MyProperty ??? New Myotherobj ();

 

Fourth: case expression. Supported expressions:

Switch (myobj ){

Case string. IsNullorEmpty (mytherobj ):

.....

Case mytherobj. Trim (). Lower:

....

}

 

Fifth, extend attributes.

[Associate (string)] public static int MyExtensionProperty {get; set ;}