Doubt on Auto-Properties in c# 6.0

Question

User269846090 posted

public string First { get; set; } = "Jane";

What is the use of this line? 

Why I am asking this question is.... the following do the same..

 public string First { get {return ="Jane"} set{somevariable = value} };

Answer 1

User603616845 posted

Hi,

Doubt on Auto-Properties in c# 6.0

The auto-property initializer allows assignment of properties directly within their declaration. For read-only properties, it takes care of all the ceremony required to ensure the property is immutable. Consider, for example, the FingerPrint class in this example:

public class FingerPrint
{
  public DateTime TimeStamp { get; } = DateTime.UtcNow;
  public string User { get; } =
    System.Security.Principal.WindowsPrincipal.Current.Identity.Name;
  public string Process { get; } =
    System.Diagnostics.Process.GetCurrentProcess().ProcessName;
}

You can take best answer from here.

Hope this will help you.

thanks

Answer 2

User-821857111 posted

public string First { get; set; } = "Jane";

What is the use of this line? 

Why I am asking this question is.... the following do the same..

 public string First { get {return ="Jane"} set{somevariable = value} };

Yes - the second example is equivalent. The first example however saves time as it requires less typing. This is the reason that the feature has been added to the C# language.

Answer 3

User269846090 posted

Hi Mikes....

          I thought there may be some other usage but now I am clear. Thanks for your reply.

 

Answer 4

User303363814 posted

The statement "the following do the same" is not correct.

Your first example declares a string property which is initialised to "Jane".

The second example does not compile.  That is the major difference.

Answer 5

User753101303 posted

Hi,

Depends what you expect the second sample would do. At best (fixing compile time errors) it seems it would ALWAYS return the "Jane" value.

The first exemple is just to ensure the *initial* value is "Jane" but you can then change this value whenever you want (and of course return this new value when reading the property).