detect time frame

There is nothing attached to your post! So, we are unable to help much at the point.

The variable that returns the current Time-frame / Period is "_Period" or you can also use the "Period()" function.

Print("Current TimeFrame is ..."+IntegerToString(Period(),0));

Print("Current TimeFrame is ..."+IntegerToString(Period(),0));

Just as a clarification, there is no need for String Concatenation or for Conversion when using the Print() function:

Print( "Current TimeFrame is ... ", Period() ); // Using Function
Print( "Current TimeFrame is ... ", _Period  ); // Using Variable

You may want something a little more intuitive than just the number i.e. "H4" instead of "240"

Print("The current timeframe is ", StringSubstr(EnumToString((ENUM_TIMEFRAMES)_Period),7));  

or a switch, particularly if you use non-standard timeframes or want something more descriptive i.e. "Daily" instead of "D1"

string timeframe()
  {
   switch(_Period)
     {
      case PERIOD_M1:  return("M1");
      case PERIOD_M5:  return("M5");
      case PERIOD_M15: return("M15");
      case PERIOD_M30: return("M30");
      case PERIOD_H1:  return("Hourly");
      case PERIOD_H4:  return("H4");
      case PERIOD_D1:  return("Daily");
      case PERIOD_W1:  return("Weekly");
      case PERIOD_MN1: return("Monthly");
      default: return(string(_Period));
     }
  }

Print("The current timeframe is ", StringSubstr(EnumToString((ENUM_TIMEFRAMES)_Period),7));  

/// Convert a ENUM_APPLIED_PRICE to string.
string            as_string(ENUM_APPLIED_PRICE price){
   string   price_xxx  = EnumToString(price);                   // PRICE_XXX
   return StringSubstr(price_xxx, 6);                           // XXX
}
/// Convert a period to string.
string            as_string(ENUM_TIMEFRAMES period){
   if(period == PERIOD_CURRENT)  period   = (ENUM_TIMEFRAMES) _Period;
   string   period_xxx  = EnumToString(period);                // PERIOD_XXX
   return StringSubstr(period_xxx, 7);                         // XXX
}
///////////////////////////
Print("The current timeframe is ", as_string(PERIOD_CURRENT));

Thanks all for your responses

I shall be trying the following

Alert ("event triggered ",IntegerToString(Period(),0));

I don't need to convert it for the Alert() function either. This will do ...

Alert( "event triggered ", _Period );