creating a line graph

How can I create a line graph with the data below given with the different quarters (quarter 1, quarter 2, quarter 3, quarter 4) on the x-axis and one line for Revenue, one line for COGS, one line for EBITA? I have attached excel file.total.xls

Please help.

want to creating a line graph, see below code, this code is not the line chart according to your file.you can know the method from it.

            //Add a new  chart worsheet to workbook
            Chart chart = sheet.Charts.Add();
            if (checkBox1.Checked)
            {
                chart.ChartType = ExcelChartType.Line3D;
            }
            else
            {
                chart.ChartType = ExcelChartType.Line;
            }

Then you can create chart data:

private void CreateChartData(Worksheet sheet)
        {
            //Country
            sheet.Range["A1"].Value = "Country";
            sheet.Range["A2"].Value = "Cuba";
            sheet.Range["A3"].Value = "Mexico";
            sheet.Range["A4"].Value = "France";
            sheet.Range["A5"].Value = "German";
            //Jun
            sheet.Range["B1"].Value = "Jun";
            sheet.Range["B2"].NumberValue = 3300;
            sheet.Range["B3"].NumberValue = 2300;
            sheet.Range["B4"].NumberValue = 4500;
            sheet.Range["B5"].NumberValue = 6700;
            //Jul
            sheet.Range["C1"].Value = "Jul";
            sheet.Range["C2"].NumberValue = 7500;
            sheet.Range["C3"].NumberValue = 2900;
            sheet.Range["C4"].NumberValue = 2300;
            sheet.Range["C5"].NumberValue = 4200;
              //Aug
            sheet.Range["D1"].Value = "Aug";
            sheet.Range["D2"].NumberValue = 7700;
            sheet.Range["D3"].NumberValue = 6900;
            sheet.Range["D4"].NumberValue = 8400;
            sheet.Range["D5"].NumberValue = 4200;
             //Sep
            sheet.Range["E1"].Value = "Sep";
            sheet.Range["E2"].NumberValue = 8000;
            sheet.Range["E3"].NumberValue = 7200;
            sheet.Range["E4"].NumberValue = 8100;
            sheet.Range["E5"].NumberValue = 5600;             
              //Style
            sheet.Range["A1:E1"].Style.Font.IsBold = true;
            sheet.Range["A2:E2"].Style.KnownColor = ExcelColors.LightYellow;
            sheet.Range["A3:E3"].Style.KnownColor = ExcelColors.LightGreen1;
            sheet.Range["A4:E4"].Style.KnownColor = ExcelColors.LightOrange;
            sheet.Range["A5:E5"].Style.KnownColor = ExcelColors.LightTurquoise;
            //Border
            sheet.Range["A1:E5"].Style.Borders[BordersLineType.EdgeTop].Color = Color.FromArgb(0, 0, 128);
            sheet.Range["A1:E5"].Style.Borders[BordersLineType.EdgeTop].LineStyle = LineStyleType.Thin;
            sheet.Range["A1:E5"].Style.Borders[BordersLineType.EdgeBottom].Color = Color.FromArgb(0, 0, 128);
            sheet.Range["A1:E5"].Style.Borders[BordersLineType.EdgeBottom].LineStyle = LineStyleType.Thin;
            sheet.Range["A1:E5"].Style.Borders[BordersLineType.EdgeLeft].Color = Color.FromArgb(0, 0, 128);
            sheet.Range["A1:E5"].Style.Borders[BordersLineType.EdgeLeft].LineStyle = LineStyleType.Thin;
            sheet.Range["A1:E5"].Style.Borders[BordersLineType.EdgeRight].Color = Color.FromArgb(0, 0, 128);
            sheet.Range["A1:E5"].Style.Borders[BordersLineType.EdgeRight].LineStyle = LineStyleType.Thin;
            sheet.Range["B2:D5"].Style.NumberFormat = "\"$\"#,##0";
        }

then, eidt chart data region,position and data:

     //Set region of chart data
            chart.DataRange = sheet.Range["A1:E5"];
            //Set position of chart
            chart.LeftColumn = 1;
            chart.TopRow = 6;
            chart.RightColumn = 11;
            chart.BottomRow = 29;
            //Chart title
            chart.ChartTitle = "Sales market by country";
            chart.ChartTitleArea.IsBold = true;
            chart.ChartTitleArea.Size = 12;
            chart.PrimaryCategoryAxis.Title = "Month";
            chart.PrimaryCategoryAxis.Font.IsBold = true;
            chart.PrimaryCategoryAxis.TitleArea.IsBold = true;
            chart.PrimaryValueAxis.Title = "Sales(in Dollars)";
            chart.PrimaryValueAxis.HasMajorGridLines = false;
            chart.PrimaryValueAxis.TitleArea.TextRotationAngle = 90;
            chart.PrimaryValueAxis.MinValue = 1000;
            chart.PrimaryValueAxis.TitleArea.IsBold = true;
            foreach (Spire.Xls.Charts.ChartSerie cs in chart.Series)
            {
                cs.Format.Options.IsVaryColor = true;
                cs.DataPoints.DefaultDataPoint.DataLabels.HasValue = true;
                if (!checkBox1.Checked)
                    cs.DataFormat.MarkerStyle = ChartMarkerType.Circle;
            }
            chart.PlotArea.Fill.Visible = false;
            chart.Legend.Position = LegendPositionType.Top;
            workbook.SaveToFile("Sample.xls");
            ExcelDocViewer(workbook.FileName);

if you are still not very clear, you can visit this technical article:excel line chart c#

Hope it help you!