Code snippet to copy documents from one document library to another

    1:  using (SPSite site = new SPSite("https://ms10:200/sites/200"))

    2:              {

    3:                  using (SPWeb web = site.OpenWeb())

    4:                  {

    5:                      SPList lib1 = (SPDocumentLibrary)web.Lists["Documents"];

    6:                      SPList lib2 = (SPDocumentLibrary)web.Lists["Site Collection Documents"];

    7:                      byte[] fileBytes = null;

    8:                      string destUrl = null;

    9:                      SPFile destFile = null;

   10:                      foreach (SPListItem item1 in lib1.Items)

   11:                      {

   12:                          fileBytes = item1.File.OpenBinary();

   13:                          destUrl = lib2.RootFolder.Url + "/" + item1.File.Name;

   14:                          destFile = lib2.RootFolder.Files.Add(destUrl, fileBytes, true /*overwrite*/);

   15:   

   16:                          fileBytes = null;

   17:                          destUrl = null;

   18:                          destFile = null;

   19:                      }

   20:   

   21:                      lib1 = null;

   22:                      lib2 = null;

   23:                  }

   24:              }

   25:              MessageBox.Show("Done!");

:: Please note that I would have just uploaded my initial code and you might want to consider proper optimization of the code and disposal of objects properly. I might not have updated the latest code here.