Condition only applies the first time

[julifro]

hello. Excuse my English. I am a novice programmer. I have an indicator that I want to draw the bar a color and play a sound when a condition is given THE FIRST TIME. If I use Calculate.OnPriceChange or Calculate.OnEachTick the drawing and sound repeat constantly. How could I do so that both drawing and sound are only performed the first time the condition is met? thank you.

[NinjaTrader_Jesse]

Hello julifro,

You could use a bool variable for that. On each first tick of the bar you could reset the variable so that each new bar the condition can be checked again. Inside the condition you would toggle the bool so that the condition is not true after the first time it happens.

private bool myBool;

protected override void OnBarUpdate()
{​
if (IsFirstTickOfBar)
    {
        myBool = false;​
    }
    if(myBool == false && Close[0] > Open[0])
    {
         // do the alert
        myBool = true;
    }
}