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.
And this is if copying a single property to another list is needed:
targetList.AddRange(sourceList.Select(i => i.NeededProperty));
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 < string > pullStrLst( )
{
List < string > lst;
lst = __strBuf.GetRange( 0, __strBuf.Count );
__strBuf.Clear( );
return( lst );
}
For a list of elements
List<string> lstTest = new List<string>();
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<string> lstNew = new List<string>();
lstNew.AddRange(lstTest);
If you want to copy the first 3 elements
List<string> lstNew = lstTest.GetRange(0, 3);
Here another method but it is little worse compare to other.
List<int> i=original.Take(original.count).ToList();
Easy to map different set of list by linq without for loop
var List1= new List<Entities1>();
var List2= new List<Entities2>();
var List2 = List1.Select(p => new Entities2
{
EntityCode = p.EntityCode,
EntityId = p.EntityId,
EntityName = p.EntityName
}).ToList();
This method will create a copy of your list but your type should be serializable.
Use:
List<Student> lstStudent = db.Students.Where(s => s.DOB < DateTime.Now).ToList().CopyList();
Method:
public static List<T> CopyList<T>(this List<T> lst)
{
List<T> lstCopy = new List<T>();
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;
}
Source: Stackoverflow.com