while converting series to area chart control is crashed.

[Quant]

while converting series to area chart control is crashed.
I am using following code.

Code: Select all

            Candle newSeries = new Candle();
            tChart1.Series.Add(newSeries);
            newSeries.FillSampleValues(100);
            Series axy =  tChart1.Series[0];
            Series.ChangeType(ref axy, typeof(Steema.TeeChart.Styles.Area));

[Christopher]

while converting series to area chart control is crashed.
I am using following code.

Using that code I cannot reproduce the problem here, and the result I obtain is the following:

Chart635936433698944843.png (31.84 KiB) Viewed 12183 times

Which version of TeeChart.dll are you using?

[Quant]

I am getting following error

Unhandled Exception:

Object reference not set to an instance of an object.

System.NullReferenceException

Stack Trace:
at Steema.TeeChart.Styles.Custom.DrawPoint(Boolean drawOldPointer, Int32 valueIndex, Int32 x, Int32 y)
at Steema.TeeChart.Styles.Custom.DrawValue(Int32 valueIndex)
at Steema.TeeChart.Styles.Custom.DoDrawIndex(Int32 Index, Boolean CanID)
at Steema.TeeChart.Styles.Series.Draw()
at Steema.TeeChart.Styles.Custom.Draw()
at Steema.TeeChart.Styles.Series.DrawSeries()
at Steema.TeeChart.Chart.DoDraw(Graphics3D g, Int32 First, Int32 Last, Int32 Inc)
at Steema.TeeChart.Chart.DrawAllSeries(Graphics3D g)
at Steema.TeeChart.Chart.InternalDraw(Graphics g, Boolean noTools)
at Steema.TeeChart.Chart.InternalDraw(Graphics g)
at Steema.TeeChart.TChart.Draw(Graphics g)
at Steema.TeeChart.TChart.OnPaint(PaintEventArgs pe)
at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs)
at System.Windows.Forms.Control.WmPaint(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

[Quant]

error resolved by assigning color to arealines.

Code: Select all

 Series.ChangeType(ref candleseries, typeof(Steema.TeeChart.Styles.Area));
 Area eqArea = (Area) candleseries;
 eqArea.AreaLines.Color = Color.Red;