Change chart period

August 13th, 2014, 03:46 PM

I've seen similar questions that the only solution is to use a send key.

I'm wondering if anyone has figured out a way to have an indicator change the chart's period.

Basically I'm trying to set up and indicator that looks at daily data (secondary time frame) and calculates from that what the primary time frame should be. I get this value just fine but don't know how to change the chart's period without doing a send key. Send key might work if there was a way to guarantee that chart had focus (if there is a way for that i'd appreciate any help).

August 13th, 2014, 07:24 PM

I hope this is what you are looking for:

Code

        protected override void OnStartUp()
        {
            this.Bars.Period.Id = PeriodType.Minute;
            this.Bars.Period.Value = 5;
        }

J

August 15th, 2014, 11:39 PM

thanks that does seem to adjust the chart settings but doesn't reload the chart.

I ended up doing this and it seems to work the majority of the time.

Code

if(BarsArray[0].Period.Value != PeriodSize)
			{
				ChartControl.BarsArray[0].Period.Value = PeriodSize;
				// Make sure chart window is active.
				ChartControl.ParentForm.Activate(); 
				// Ctrl-Shift-R = reload historical data.
				System.Windows.Forms.SendKeys.SendWait("^+R"); 
			}

September 24th, 2018, 03:36 AM

shazzmoe, or anyone... thanks, it worked like a charm in NT7.

Any idea of how this can be done in NT8? I think the basic code is here, but I am missing the special sauce...

Code

            	if (State == State.DataLoaded)
			        {	            
					    if(ChartBars != null)
					    {
							if (ChartBars.Properties.BarsPeriod.BarsPeriodType != BarsPeriodType.Minute || 
										ChartBars.Properties.BarsPeriod.Value != 30)
							{
								ChartBars.Properties.BarsPeriod.BarsPeriodType = BarsPeriodType.Minute;
								ChartBars.Properties.BarsPeriod.Value = 30;
                                                                //...
                                                               //special sauce is missing here
                                                               //...
							}
					    }
					break;
			        }

Change chart period

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Change chart period