C# Select elements in list as List of string

by 
List<string> empnames = emplist.Select(e => e.Ename).ToList();

This is an example of Projection in Linq. Followed by a ToList to resolve the IEnumerable<string> into a List<string>.

Alternatively in Linq syntax (head compiled):

var empnamesEnum = from emp in emplist 
                   select emp.Ename;
List<string> empnames = empnamesEnum.ToList();

Projection is basically representing the current type of the enumerable as a new type. You can project to anonymous types, another known type by calling constructors etc, or an enumerable of one of the properties (as in your case).

For example, you can project an enumerable of Employee to an enumerable of Tuple<int, string> like so:

var tuples = emplist.Select(e => new Tuple<int, string>(e.EID, e.Ename));

More Related Contents:

  1. How to write this nested foreach loop query in LINQ?
  2. Group by in LINQ
  3. Fluent and Query Expression — Is there any benefit(s) of one over other?
  4. Linq: GroupBy, Sum and Count
  5. Find an item in a list by LINQ
  6. Reading a file line by line in C#
  7. ToList()– does it create a new list?
  8. linq case statement
  9. XDocument containing namespaces
  10. Use own IComparer with Linq OrderBy
  11. Combination of List
  12. The ‘:’ character, hexadecimal value 0x3A, cannot be included in a name
  13. How to convert list of arrays into a multidimensional array
  14. How to use the IEqualityComparer
  15. Check if two lists are equal
  16. Am I misunderstanding LINQ to SQL .AsEnumerable()?
  17. An expression tree lambda may not contain a null propagating operator
  18. LINQ aggregate and group by periods of time
  19. VB.NET equivalent to C# var keyword [duplicate]
  20. Cannot use a lambda expression as an argument to a dynamically dispatched operation without first casting it to a delegate or expression tree type
  21. How set value a property selector Expression
  22. LINQ: Using INNER JOIN, Group and SUM
  23. linq distinct or group by multiple properties
  24. Find all child controls of specific type using Enumerable.OfType() or LINQ
  25. LINQ to SQL using GROUP BY and COUNT(DISTINCT)
  26. The data source does not support server-side data paging
  27. Remove item from list based on condition
  28. Last and LastOrDefault not supported
  29. Explicit/implicit cast operator fails when using LINQ’s .Cast() operator
  30. Convert DataTable to Generic List in C#

Leave a Comment