How to get Bar prices in drawing tool?

[eliwanag86]

Hello, I'm trying to create a custom Anchored VWAP drawing tool and have gotten to the point of being able to click on the chart and get the bar index of my click. How can I get the Bar prices of that index #? I tried, Bars.GetLow(barNumber) but it gives me an error "An object reference is required for the non-static field method or property 'Bars.GetLow(int)'"

I need the OHLC prices to calculate VWAP and to anchor the drawing tool to the VWAP value of that bar

Here is my code for my OneMouseDown() method:

public override void OnMouseDown(ChartControl chartControl, ChartPanel chartPanel, ChartScale chartScale, ChartAnchor dataPoint)
        {
            switch (DrawingState)
            {
                case DrawingState.Building:
                    if (StartAnchor.IsEditing) // if this is the first click on the chart
                    {
                        dataPoint.CopyDataValues(StartAnchor); // Set the StartAnchor's time and price to the mouse click
                        
                        StartAnchor.IsEditing = false; // Marks the start anchor is placed
                        double doublebarNumber = StartAnchor.SlotIndex; // Get the bar index of the click
                        int barNumber = (int)Math.Round(doublebarNumber); // Convert it to an int cause its a double even though its a whole number
                        Print("Bar # Clicked on: " + barNumber);
                        
                        // Get the low of barNumber (stuck here)
                        //double barLow = ChartBars.Bars.GetLow(barNumber); // Error
                        double barLow = Bars.GetLow(barNumber); // Error "An object reference is required for the non-static field method or property 'Bars.GetLow(int)'"
                        Print("Clicked BarLow: " + barLow);
                        
                    }
                    break;    
            }
        }​

I also tried to copy and paste the example for Bars.GetLow() which is placed inside the OnRender() method but I get the same error trying to compile that example

Anyone have a solution? I'm sure someone has done this before.

[NinjaTrader_Gaby]

Hello,

Thank you for your post.

Have you used GetAttachedToChartBars() first, then called .GetLow() on the bars object?

https://ninjatrader.com/support/helpguides/nt8/getattachedtochartbars.htm

[eliwanag86]

Hi Gaby, that did it, thanks so much!