NT8 How to turn on/off OnRender from button click?

[Sim22]

Hi there,

I have placed a button on the main panel. (See attachment)
I have an indicator that only plots via "OnRender". I wish to turn this indicator on and off visually via this button.

I can't seem to find any samples to do this....... only how to make a button.

[INDENT]protected void btn_Click(object sender, RoutedEventArgs rea)
{[INDENT]....... make ellipse visible or not visible
[/INDENT]}

protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
{[INDENT]........ draw the ellipse
[/INDENT]}
[/INDENT]

Also, how do I make the button click result instantaneous without having to F5 the chart?

Thank you,

Sim22

[-=Edge=-]

I have placed a button on the main panel. (See attachment)
I have an indicator that only plots via "OnRender". I wish to turn this indicator on and off visually via this button

Use your button click event to turn on and off a bool, and then use that bool as a condition (in if statement) to draw in OnRender.

Also, how do I make the button click result instantaneous without having to F5 the chart?

I'm not sure why you would have to do that with this approach.. But search "refresh" in the help guide for reference..

[Sim22]

Worked......

Thank you Edge!

Here is the concept for anyone following........

 //assuming "IsVisible = true" when first initializing a chart

protected void btn_Click(object sender, RoutedEventArgs rea)
{   
      IsVisible = IsVisible == true ? false : true; // on-off switch
      ForceRefresh(); // refreshes the chart so you don't have to click on it.
}

protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
{   
      if( Bars == null || ChartControl == null || Bars.Instrument == null  || !IsVisible)
       {
             return; 
             // does not draw OnRender if "IsVisible" = false;
        }
       //.............draw an ellipse
}

Find an attached basic indicator that turns an ema plot on/off. Both a regular plot and a OnRender drawing.