How do I copy items from list to list without foreach

Question

How do I transfer the items contained in one List to another in C  without using foreach

User · Answer

To add the contents of one list to another list which already exists  you can use   targetList AddRange sourceList     If you re just wanting to create a new copy of the list  see Lasse s answer

User · Answer

You could try this   List lt Int32 gt  copy   new List lt Int32 gt  original     or if you re using C  3 and  NET 3 5  with Linq  you can do this   List lt Int32 gt  copy   original ToList

User · Answer

For a list of elements  List lt string gt  lstTest   new List lt string gt      lstTest Add  test1    lstTest Add  test2    lstTest Add  test3    lstTest Add  test4    lstTest Add  test5    lstTest Add  test6      If you want to copy all the elements  List lt string gt  lstNew   new List lt string gt     lstNew AddRange lstTest     If you want to copy the first 3 elements                   List lt string gt  lstNew   lstTest GetRange 0  3

User · Answer

Here another method but it is little worse compare to other   List lt int gt  i original Take original count  ToList

User · Answer

And this is if copying a single property to another list is needed   targetList AddRange sourceList Select i   gt  i NeededProperty

User · Answer

This method will create a copy of your list  but your  type should be serializable   Use    List lt Student gt  lstStudent   db Students Where s   gt  s DOB  lt  DateTime Now  ToList   CopyList       Method   public static List lt T gt  CopyList lt T gt  this List lt T gt  lst                List lt T gt  lstCopy   new List lt T gt             foreach  var item in lst                        using  MemoryStream stream   new MemoryStream                                  BinaryFormatter formatter   new BinaryFormatter                    formatter Serialize stream  item                   stream Position   0                  lstCopy Add  T formatter Deserialize stream                                    return lstCopy

User · Answer

Easy to map different set of list by linq without for loop  var List1  new List lt Entities1 gt      var List2  new List lt Entities2 gt      var List2   List1 Select p   gt  new Entities2                       EntityCode   p EntityCode              EntityId   p EntityId              EntityName   p EntityName            ToList

User · Answer

OK this is working well From the suggestions above GetRange    does not work for me with a list as an argument   so sweetening things up a bit from posts above    thanks everyone         Where   strBuf is a string list used as a dumping ground for data     public List  lt  string  gt  pullStrLst          List  lt  string  gt  lst       lst     strBuf GetRange  0    strBuf Count                strBuf Clear          return  lst

[c#] How do I copy items from list to list without foreach?

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