/*
 * How to call:
     ReqFactory reqF = tdConnection.ReqFactory;
     Req reqS = reqF[1];
     TDFilter tFilter = reqF.Filter;
     tFilter["RQ_REQ_ID"] = 11.ToString();
     List tL = tFilter.NewList();
     Req reqSF = tL[1];
    CopyPasteReq(reqS.ID.ToString(), (int) tagTDAPI_COPY_PASTE_MODES.COPY_PASTE_USE_RELATED_ENTITIES_MODE,
               reqS.Path.ToString(), reqSF.ID.ToString(),
               (int) tagTDAPI_COPY_PASTE_MODES.COPY_PASTE_USE_RELATED_ENTITIES_MODE, 1);
 */
private void CopyPasteReq(String idsFilter, int copyMode, String path, String targetID, int pasteMode, int orderID)
{
  ISupportCopyPaste iscp;
  String clipboard;

  iscp = (ISupportCopyPaste)tdConnection.ReqFactory;
  clipboard = iscp.CopyToClipBoard(idsFilter, copyMode, path);
  iscp.PasteFromClipBoard(clipboard, targetID, pasteMode, orderID);

  iscp = null;
}