copy list items from one list to another in sharepoint

Question

In Sharepoint how can you copy a list item from one list to another list eg copy from \"List A\" to \"List B\" (both are at the root of the site)

I want this copying

Answer 1

private void CopyAttachmentsToList(SPListItem srcItem, SPListItem tgtItem)
{
    try
    {
        //get source item attachments from the folder
        SPFolder srcAttachmentsFolder =
            srcItem.Web.Folders["Lists"].SubFolders[srcItem.ParentList.Title].SubFolders["Attachments"].SubFolders[srcItem.ID.ToString()];

        //Add items to the target item
        foreach (SPFile file in srcAttachmentsFolder.Files)
        {
            byte[] binFile = file.OpenBinary();
            tgtItem.Update();
            tgtItem.Attachments.AddNow(file.Name, binFile);
            tgtItem.Update();
        }
    }
    catch
    {
        //exception message goes here
    }
    finally
    {
        srcItem.Web.Dispose();
    }
}

Don't forget to add this line, tgtItem.Update();, else you will get an err.