how can i make line or curve in excel
i have to make graph as use line or curve
sheet.Shapes.AddLine(16, 16, 6, 0, 0, 65);sheet.Shapes.AddLine(17, 16, 6, 2, 10, 65);sheet.Shapes.AddLine(18, 16, 6, 2, -10, 65);
a line isn't rise
please help me