WealthScript Techniques | Don't execute Strategy on open

Modified on 2010/09/12 13:25 by Eugene — Categorized as: Knowledge Base

The problem

To keep a specific ChartScript from executing right after it is opened, in Wealth-Lab Developer/Pro V4 you were placing {$NO_AUTO_EXECUTE} in your ChartScript; usually at the top. Wealth-Lab Developer/Pro 6 lacks this directive.

The approach

Note: if you open a Strategy with no particular symbol highlighted in the DataSets tree, the Strategy won't execute anyway.

Since there was user demand for that missing directive, here's a simple workaround. If you construct your script like the Example below shows, then it will not execute after opening for the first time (even if you had a symbol highlighted in the DataSets tree). The next time you run the Strategy, it will continue executing as usual.

Code example

Note the placement of NO_AUTO_EXECUTE: it should be declared as class variable, prior to the Execute method.


using System; 
using System.Collections.Generic; 
using System.Text; 
using System.Drawing; 
using WealthLab; 
using WealthLab.Indicators; 

namespace WealthLab.Strategies 
{ 
	public class MyStrategy : WealthScript 
	{ 
		bool NO_AUTO_EXECUTE = true;
		
		protected override void Execute() 
		{ 
			if( NO_AUTO_EXECUTE ) goto halt; 
			else goto go;
			halt:
			{
				NO_AUTO_EXECUTE = false;
				return;
			}
			
			go:
				// YOUR STRATEGY CODE GOES HERE	
				DrawLabel( PricePane, "Executed" );				
		}
	} 
}