How to copy multiple items in a List collection? RSS

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  nirman.doshi

  Participant

  1520 Points

  775 Posts

  How to copy multiple items in a List collection?

  Nov 23, 2012 10:36 AM|LINK

  I have one  List<Customer> object named as "customers"

  another list List<Customer> object named as "activeCustomers"

  and one more list List<Customer> object named as "inactiveCustomers"

  is there any way to add all inactiveCustomers and activeCustomers to a "customers" collection without iterating over each of them?

  Nirman Doshi
  Software Developer
  Vadodara, India
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  alankarp

  Contributor

  2042 Points

  345 Posts

  Re: How to copy multiple items in a List collection?

  Nov 23, 2012 10:44 AM|LINK

  Hi,
  
  You can use AddRage method
  
  List<customer> activeCustomers;
  List<customer> inactiveCustomers;
  List<customer> customers;
  customers.AddRange(activeCustomers);
  customers.AddRange(inactiveCustomers);

  Alankar Patil
  
  Profile
  • Edited by alankarp on Nov 23, 2012 10:45 AM
  • Marked as answer by nirman.doshi on Nov 23, 2012 01:34 PM
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  matifnadeem

  Contributor

  4758 Points

  1130 Posts

  Re: How to copy multiple items in a List collection?

  Nov 23, 2012 01:00 PM|LINK

  nirman.doshi

  I have one  List<Customer> object named as "customers"

  another list List<Customer> object named as "activeCustomers"

  and one more list List<Customer> object named as "inactiveCustomers"

  is there any way to add all inactiveCustomers and activeCustomers to a "customers" collection without iterating over each of them?

  Hi nirman.doshi,

  Use AddRange to add multiple collection list into one list. Modify it according to your requirement.

  List<int> a = new List<int>();
  a.Add(1);
  a.Add(2);
  a.Add(5);
  a.Add(6);
  
  // Contains:
  // 1
  // 2
  // 5
  // 6
  
  int[] b = new int[3];
  b[0] = 7;
  b[1] = 6;
  b[2] = 7;
  
  // Contains:
  // 7
  // 6
  // 7
  
  a.AddRange(b);
  
  // Contains:
  // 1
  // 2
  // 5
  // 6
  // 7 [added]
  // 6 [added]
  // 7 [added]
  
  foreach (int i in a)
  {
      Console.WriteLine(i);
  }

  Cheers

  
  M Atif Nadeem
  Mark as Answer if you got right thing
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  • Marked as answer by nirman.doshi on Nov 23, 2012 01:34 PM