Why can't I throw exceptions from an expression-bodied member?

Question

Using expression-bodied members allows you to define the body of a method or property as a single expression without a return keyword (should it return something).

F

Answer 1

Although its a old thread, but C# now supports throw expressions which were added in C# 7.

Previously,

var colorString = "green,red,blue".Split(',');
var colors = (colorString.Length > 0) ? colorString : null
if(colors == null){throw new Exception("There are no colors");}

No more. Now, as Null coalescing operator:

var firstName = name ?? throw new ArgumentException ();

As Conditional Operator:

It is also possible in the Conditional Operator as well.

var arrayFirstValue = (array.Length > 0)? array[1] : 
  throw new Expection("array contains no elements");

Expression bodied member:

public string GetPhoneNumber () => throw new NotImplementedException();