How to add the image to the series?
First add the Imagelist Control and set it as the imagelist associated with the Chart. Then specify the ImageIndex value at the imageindex property exposed by the ChartSymbolInfo. Set the series symbol as Image using Shape property, the image is exposed in the series.
C#
//Setting Image for the series
series.Style.Images = new ChartImageCollection(this.imageList1.Images);
series.Style.Symbol.ImageIndex =0;
series.Style.Symbol.Size = new Size(20,20);
//Set the series symbol as Image
series.Style.Symbol.Shape =ChartSymbolShape.Image;
VB
'Setting Image for the series
series.Style.Images = New ChartImageCollection(Me.ImageList1.Images)series.Style.Symbol.ImageIndex =0
series.Style.Symbol.Size = New Size(20,20)
'Set the series symbol as Image
series.Style.Symbol.Shape = ChartSymbolShape.Image