C# 6.0 features:
1. using static System.Console;
Example:
using static System.Console;
class Program
{
static void Main(string[] args)
{
WriteLine("Hello World!");
}
}
2. String interpolation.
Example:
WriteLine($"{firstName} {lastName} is my name!");
3. Null conditional operators.
4. Getter only auto properties.
5. Auto property initializers in C#
6. Parameterless constructor for structs
7. Dictionary Initialisation
8. await in catch and finally
9. Exception Filters
Example:
C#5.0:
catch (Exception ex)
{
if (ex.Message.Equals("500"))
Write("Bad Request");
}
C# 6.0
catch (Exception ex) when (ex.Message.Equals("400"))
{
Write("Bad Request");
ReadLine();
}
C# 7.0 features:
1. Local function / nested function
2. We can use out variable on the fly,
Example:
static void Main(string[] args) {
string s = "26-Nov-2016";
if (DateTime.TryParse(s, out DateTime date))
{
WriteLine(date);
}
WriteLine(date);
}
3. Tuples
4. Expression bodied methods / Constructors / getssers / setters
5. Throw expressions
Invoke Vs BeginInvoke:
Delegate.Invoke: Executes synchronously, on the same thread.
Delegate.BeginInvoke: Executes asynchronously, on a threadpool thread.
Control.Invoke: Executes on the UI thread, but calling thread waits for completion before continuing.
Control.BeginInvoke: Executes on the UI thread, and calling thread doesn't wait for completion.
Dependency Injection:
1.
Interface ILogger
{
OpenLog();
Log();
CloseLog();
}
2.
Class FileLogger() : ILogger
{
public string LogFileName { get; private set; }
public FileLogger(string logFileName)
{
LogFileName = logFileName;
}
public void OpenLog()
{
//
}
public void Log()
{
//
}
public void CloseLog()
{
//
}
}
3.
Class LoggerEngine()
{
ILogger _logger;
public LoggerEngine(ILogger logger)
{
_logger = logger;
}
public void log(string message)
{
_logger.OpenLog();
_logger.Log(message);
_logger.CloseLog();
}
}
4.
Create Client Class IoCThirdParty
{
public string FileName { get; set; }
public void Write(string message)
{
Logger ip = new Logger(FileName);
var obj = new LoggerEngine(ip);
obj.log(message);
}
}
5.
Use Client Class IoCThirdParty
class Use
{
static void main()
{
IoCThirdParty obj = new IoCThirdParty(){FileName="C:\log.txt"};
obj.Write("Hello man!");
}
}
1. using static System.Console;
Example:
using static System.Console;
class Program
{
static void Main(string[] args)
{
WriteLine("Hello World!");
}
}
2. String interpolation.
Example:
WriteLine($"{firstName} {lastName} is my name!");
3. Null conditional operators.
4. Getter only auto properties.
5. Auto property initializers in C#
6. Parameterless constructor for structs
7. Dictionary Initialisation
8. await in catch and finally
9. Exception Filters
Example:
C#5.0:
catch (Exception ex)
{
if (ex.Message.Equals("500"))
Write("Bad Request");
}
C# 6.0
catch (Exception ex) when (ex.Message.Equals("400"))
{
Write("Bad Request");
ReadLine();
}
C# 7.0 features:
1. Local function / nested function
2. We can use out variable on the fly,
Example:
static void Main(string[] args) {
string s = "26-Nov-2016";
if (DateTime.TryParse(s, out DateTime date))
{
WriteLine(date);
}
WriteLine(date);
}
3. Tuples
4. Expression bodied methods / Constructors / getssers / setters
5. Throw expressions
Invoke Vs BeginInvoke:
Delegate.Invoke: Executes synchronously, on the same thread.
Delegate.BeginInvoke: Executes asynchronously, on a threadpool thread.
Control.Invoke: Executes on the UI thread, but calling thread waits for completion before continuing.
Control.BeginInvoke: Executes on the UI thread, and calling thread doesn't wait for completion.
Dependency Injection:
1.
Interface ILogger
{
OpenLog();
Log();
CloseLog();
}
2.
Class FileLogger() : ILogger
{
public string LogFileName { get; private set; }
public FileLogger(string logFileName)
{
LogFileName = logFileName;
}
public void OpenLog()
{
//
}
public void Log()
{
//
}
public void CloseLog()
{
//
}
}
3.
Class LoggerEngine()
{
ILogger _logger;
public LoggerEngine(ILogger logger)
{
_logger = logger;
}
public void log(string message)
{
_logger.OpenLog();
_logger.Log(message);
_logger.CloseLog();
}
}
4.
Create Client Class IoCThirdParty
{
public string FileName { get; set; }
public void Write(string message)
{
Logger ip = new Logger(FileName);
var obj = new LoggerEngine(ip);
obj.log(message);
}
}
5.
Use Client Class IoCThirdParty
class Use
{
static void main()
{
IoCThirdParty obj = new IoCThirdParty(){FileName="C:\log.txt"};
obj.Write("Hello man!");
}
}
