public static bool Attach(string DataPath, string datafile,string dbname)
		{
			SqlCommand AttachDbCommand= new SqlCommand() ;	
		       //Проствляем коннесшн
			AttachDbCommand.Connection = sqlConnectionK9static;
			
			AttachDbCommand.CommandText = @"sp_attach_single_file_db @dbname = '"+dbname+@"', @physname = '"+Business.clsBusinessComputerSettings.Instance().InternalServerImportExportDirectory+@"\"+datafile+"'";
                        //Удаляем возможно оствшийся от такого же аттача log
			DeleteLog(DataPath, datafile);
			try
			{
				AttachDbCommand.ExecuteNonQuery();

			}
			catch(Exception exc)
			{
				exc.ToString();
				clsMessages.ShowErrorMessage(K9.ErrorMessageCode.ERROR_EXPORT_CANTATTACHEDUMMY);
				System.Windows.Forms.MessageBox.Show(exc.ToString());
				return false;
			}
			return true;
		}