public Brush Foreground {get; set;}

private double strokeThickness;
private Brush stroke;
private Brush fillBrush;
private double axisFontSize;
private double chartFontSize;
private FontFamily fontFamily;        
private Brush foreground;

strokeThickness = 2;
stroke = new SolidColorBrush(Windows.UI.Colors.Green);
fillBrush = new SolidColorBrush(Windows.UI.Colors.Red);
foreground = new SolidColorBrush(Windows.UI.Colors.Blue);
chartFontSize = 25;
axisFontSize = 25;
fontFamily = new FontFamily("Arial Narrow");
Windows.UI.Text.FontStyle fontStyle = Windows.UI.Text.FontStyle.Italic;
Windows.UI.Text.FontWeight fontWeight = Windows.UI.Text.FontWeights.Bold;
Windows.UI.Text.FontStretch fontStretch = Windows.UI.Text.FontStretch.ExtraExpanded;

GrapeCity.Xaml.SpreadSheet.Data.SpreadDataSeries aseries = new GrapeCity.Xaml.SpreadSheet.Data.SpreadDataSeries();
aseries.Name = "1234";
aseries.Values.Add(2);
aseries.Values.Add(4);
aseries.Values.Add(3);
aseries.Values.Add(5);
aseries.Fill = new SolidColorBrush(Windows.UI.Colors.Red);
aseries.ChartType = GrapeCity.Xaml.SpreadSheet.Data.SpreadChartType.ColumnStacked;
aseries.DataLabelSettings = new GrapeCity.Xaml.SpreadSheet.Data.DataLabelSettings() { ShowValue = true, ShowBubbleSize = true };
aseries.DataLabelStyle.Fill = new SolidColorBrush(Windows.UI.Colors.Green);
GrapeCity.Xaml.SpreadSheet.Data.SpreadChart chart = new GrapeCity.Xaml.SpreadSheet.Data.SpreadChart();
chart.DataSeries.Add(aseries);
chart.Name = "name1";
chart.ChartTitle = new GrapeCity.Xaml.SpreadSheet.Data.ChartTitle();
chart.ChartTitle.Text = "-1234";
//stroke
chart.ChartTitle.StrokeDashType = GrapeCity.Xaml.SpreadSheet.Data.StrokeDashType.Dash;
chart.ChartTitle.StrokeThickness = strokeThickness;
chart.ChartTitle.Stroke = stroke;
//fill
chart.ChartTitle.Fill = fillBrush;
//font
chart.ChartTitle.FontSize = chartFontSize;
chart.ChartTitle.FontFamily = FontFamily;
chart.ChartTitle.FontStyle = fontStyle;
chart.ChartTitle.FontWeight = fontWeight;
chart.ChartTitle.FontStretch = fontStretch;
chart.ChartTitle.Foreground = foreground;

gcSpreadSheet1.ActiveSheet.Charts.Add(chart);