static void Main()
{
// If using Professional version, put your serial key below.
SpreadsheetInfo.SetLicense("FREE-LIMITED-KEY");
var workbook = new ExcelFile();
var worksheet = workbook.Worksheets.Add("Shapes");
var shape = worksheet.Shapes.Add(ShapeType.Oval, 100, 100, 200, 150, LengthUnit.Point);
shape.Fill.SetSolid(DrawingColor.FromName(DrawingColorName.GreenYellow));
shape.Outline.Fill.SetSolid(DrawingColor.FromName(DrawingColorName.DarkBlue));
shape.Outline.Width = Length.From(3, LengthUnit.Point);
var roundedRectangle = worksheet.Shapes.Add(ShapeType.RoundedRectangle, "B2", "D4");
// Radius of the corners is 35% of the rounded rectangle height (since it is smaller than width).
roundedRectangle.AdjustValues["adj"] = 35000;
var rightArrow = worksheet.Shapes.Add(ShapeType.RightArrow, "B6", 100, 40, LengthUnit.Point);
rightArrow.Fill.SetNone();
rightArrow.Outline.Fill.SetSolid(DrawingColor.FromRgb(250, 30, 20));
rightArrow.Outline.Width = Length.From(2, LengthUnit.Point);
var line = worksheet.Shapes.Add(ShapeType.Line, "B12", "B15");
line.Outline.Width = Length.From(10, LengthUnit.Pixel);
worksheet.PrintOptions.PrintGridlines = true;
worksheet.PrintOptions.PrintHeadings = true;
workbook.Save("Shapes.xlsx");
}