private bool ReadTableFromFile()
        {
            System.Data.DataTable curr_table = dgv.DataSource as System.Data.DataTable;
            System.IO.StreamReader strr = null;
            DateTime now = DateTime.Now;
            gDict.Clear();
            if (!System.IO.File.Exists(filePath + @"\" + fileName)) return false;
            try
            {
                strr = new System.IO.StreamReader(filePath + @"\" + fileName);
                if (strr.ReadLine().Equals("__FILE_BEGIN__"))//file is correct
                {
                    do
                    {
                        string buffer = strr.ReadLine();
                        if (buffer.Equals("__EOF__"))
                        {
                            strr.Close();
                            fileOpenWasSuccessful = true;
                            dgv.Sort(dgv.Columns[0], System.ComponentModel.ListSortDirection.Ascending);
                            return true;
                        }
                        if (buffer.Equals("__LINE_BEGIN__"))//file is correct
                        {
                            System.Data.DataRow theRow = curr_table.NewRow();
                            string[] preparedString;
                            do
                            {
                                preparedString = strr.ReadLine().Split('=');
                                if (preparedString[0].Equals("Date"))
                                {
                                    DateTime dt = new DateTime();//15.03.2013 3:01:13 //dd.MM.yyyy hh:mm:ss
                                    dt = DateTime.ParseExact(preparedString[1], "dd.MM.yyyy hh:mm:ss", System.Globalization.CultureInfo.CurrentCulture);
                                    TimeSpan timediff = (now - dt);
                                    theRow[preparedString[0]] = timediff;
                                    preparedString = strr.ReadLine().Split('=');
                                    if (preparedString[0].Equals("IP"))
                                    {
                                        theRow[preparedString[0]] = preparedString[1];
                                        gDict.Add(preparedString[1], dt);
                                        curr_table.Rows.Add(theRow);
                                        if (strr.ReadLine().Equals("__EOL__"))
                                            break;
                                        else throw new fileDataIncorrectException();
                                    }
                                    else throw new fileDataIncorrectException();
                                }
                                else throw new fileDataIncorrectException();
                            } while (true);
                        }
                        else throw new fileDataIncorrectException();
                    }
                    while (strr.Peek() != -1);
                    return true;
                }
                else throw new fileDataIncorrectException();
            }
            catch (fileDataIncorrectException ex) { System.Windows.Forms.MessageBox.Show("Bad settings file\n" + ex.Message); return false; }
            catch (Exception ex) { System.Windows.Forms.MessageBox.Show("THERE WERE UNHANDLED ERROR DURING READING FILE!\n" + ex.Message); return false; }
            finally { if (strr != null) strr.Close(); }
            //return true;
        }