Update Candle Stick Chart Every Minute or on realtime

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WPF

DevExpress

chart

candlestick

Hi everyone,

I wanna update my candle stick chart on every minute (without just re assigning data table to chart's data source again and again)

this is where my data insertion is going on in DATA TABLE

chartDataTable.Rows.Add(
data.DateTime, 
data.Open, 
data.Close, 
data.High, 
data.Low,
Convert.ToDouble(Convert.ToDouble(data.Volume) / 1)
);

and somewhere below, i am updating my candle stick chart using above ('chartDataTable' data table),shown :

candleChartSeries2D.DataSource = "";
candleChartSeries2D.Points.Clear();
candleChartSeries2D.DataSource = dTcharts;

Anyone help please??? its urgent :(