Expression-Bodied Properties in C# 6

In C# 6 Microsoft has introduced Expression-bodied Method and properties. Here I am go to explain only about Expression-bodied Properties if you are interested to know about Expression-bodied method then check here .It’s inspired by lambda expression.

In C# 5

get { return string.Format("{0} {1} {2} {3}", UserId, UserName, EmailId, ContactNumber); }

Complete code

class User

{

public int UserId { get; set; }

public string UserName { get; set; }

public string EmailId { get; set; }

public string ContactNumber { get; set; }

public string UserDetails

{

get { return string.Format("{0} {1} {2} {3}", UserId, UserName, EmailId, ContactNumber); }

}

}

In C# 6

public string UserDetails => $"{UserId} {UserName} {EmailId} {ContactNumber}";

Complete Code

class User

{

public int UserId { get; set;}

public string UserName { get; set; }

public string EmailId { get; set; }

public string ContactNumber { get; set; }

public string UserDetails => $"{UserId} {UserName} {EmailId} {ContactNumber}";

}

Or

class User

{

public int UserId { get; } = 1001;

public string UserName { get; } = "BNarayan";

public string EmailId { get; } = "[email protected]";

public string ContactNumber { get; } = "99xxxxxxxx";

public string UserDetails => $"{UserId} {UserName} {EmailId} {ContactNumber}";

}

Example 2:

In C# 5

public class Rectangle

{

public double Width { get; set; }

public double Lenght { get; set;}

public double Area { get { return Width * Lenght; } }

}

In C# 6

public class Rectangle

{

public double Width { get; set; } = 10.0;

public double Lenght { get; set; } = 10.0;

public double Area => Width * Lenght;

}