Upload
softwareassociates
View
227
Download
0
Embed Size (px)
Citation preview
8/18/2019 New Features in C# 6.0
1/14
New Features in C# 6.0
8/18/2019 New Features in C# 6.0
2/14
What to expect from this slide?
Microsoft has announced some new keywords and behavior for C# 6.0 in Visual Studio 2015
The features are listed as a comparison between C# 6.0 and C# 5.0
Relevant samples are also provided to get a better understanding of the features.
http://www.softwareassociates.in/http://www.softwareassociates.in/
8/18/2019 New Features in C# 6.0
3/14
What are new features ?
using Static
Auto property initializer
Dictionary Initializer
nameof Expression
New way for Exception filters
Null – Conditional Operator Expression–Bodied Methods
Easily format strings – String interpolation
http://www.softwareassociates.in/http://www.softwareassociates.in/
8/18/2019 New Features in C# 6.0
4/14
1) using static
C# 6.0 allows us to use any class that is static as a namespace. This is very useful for every developer w
the static methods from a static class
1) Convert.ToInt32()
2) Console.WriteLine()
e.g. code in C 5.0
Console.WriteLine(“Enter First Number : “);
int num1 = Convert.ToInt32(Console.ReadLine());
How to write the same code in C 6.0
using System.Console;
using System.Convert;
WriteLine(“Enter First Number : ”); int mum1 = ToInt32(ReadLine());
http://www.softwareassociates.in/http://www.softwareassociates.in/
8/18/2019 New Features in C# 6.0
5/14
1) using static (cont’d)
C# 5.0 Screenshot C# 6.0 Screenshot
http://www.softwareassociates.in/http://www.softwareassociates.in/
8/18/2019 New Features in C# 6.0
6/14
2) Auto property initializer
C# 5.0 C# 6.0
Auto property initializer is a new concept to set the value of a property during property declaration. We
value to a read-only property, it means a property that has only a {get;} attribute.
http://www.softwareassociates.in/http://www.softwareassociates.in/
8/18/2019 New Features in C# 6.0
7/14
3) Dictionary Initializer
In C# 6.0, the dictionary initialization happens in the same way but with keys as indexers which makes the
read and understandable. Here is a piece of code to show you how the new initializing feature can be use
almost similar to how you access them e.g. errorCodes [1] = “Ex000001”.
Here in C# 6.0 we can initialize the Dictionary values directly by the “=” operator and in C# 5.0 we need t
object as a {key,value} pair and the output will be the same in both versions.
Dictionary Initialization is not a new thing in C#. It was present since C# 3.0, but in C# 6.0 Microsoft enha
adding a new ability to use the key/indexer to map with the dictionary values directly during the initializat
The following code snippet shows how dictionary initializer were used prior to C# 6.0 to initialize dictiona
with key and values. This is still valid and you can use it as earlier.
http://www.softwareassociates.in/http://www.softwareassociates.in/
8/18/2019 New Features in C# 6.0
8/14
3) Dictionary Initializer (cont’d)
C# 6C# 5
http://www.softwareassociates.in/http://www.softwareassociates.in/
8/18/2019 New Features in C# 6.0
9/14
4) nameof - Expression
nameof expression will return a string literal of the name of a property or a method .
http://www.softwareassociates.in/http://www.softwareassociates.in/
8/18/2019 New Features in C# 6.0
10/14
5) Exception filters
Exception filters allow us to specify a condition with a catch block. So the catch block is executed only if tsatisfied.
http://www.softwareassociates.in/http://www.softwareassociates.in/
8/18/2019 New Features in C# 6.0
11/14
6) Null-Conditional Operator
Suppose we need to write a code to compare the objects of an employee class with null-conditional op
will need to write multiple lines of code using if() and else. In C# 6.0, we can rewrite the same code using
The following sample code shows how to check the null value of an object in C# 6.0
http://www.softwareassociates.in/http://www.softwareassociates.in/
8/18/2019 New Features in C# 6.0
12/14
7) Expression–Bodied Methods
C#5.0 C#6.0
An Expression–Bodied Method is a very useful way to write a function in a new way. By using the “=>“ l
6.0, we can easily write methods with single line.
http://www.softwareassociates.in/http://www.softwareassociates.in/
8/18/2019 New Features in C# 6.0
13/14
8) Easily format strings using String interpolation
To easily format a string value in C# 6.0 without any string.Format() method we can write a format fo
useful and time saving process to define multiple string values by
$“{ variable }”.
http://www.softwareassociates.in/http://www.softwareassociates.in/
8/18/2019 New Features in C# 6.0
14/14
SOFTWARE ASSOCIATES
Software Associates “Mascot”, Zilla Bungalow Road, Nadakkavu,
Kozhikode PIN 673011, Kerala, India
Kozhikode +91 495 276 5837 | Bangalore +91 984 700 5656 |
London +44 797 340 0804
REACH OUT TO US
http://www.softwareassociates.in/http://www.softwareassociates.in/http://facebook.com/SAIndia01http://facebook.com/SAIndia01http://twitter.com/SA4WebDevhttp://twitter.com/SA4WebDevhttps://plus.google.com/+SoftwareassociatesIndiahttps://plus.google.com/+SoftwareassociatesIndia