private void btnRun_Click(object sender, System.EventArgs e)
		{
			Workbook workbook = new Workbook();
			
			//Initialize worksheet
			workbook.CreateEmptySheets(1);
			Worksheet sheet = workbook.Worksheets[0];
			sheet.Name = "Chart data";
			sheet.GridLinesVisible = false;

			//Add a new  chart worsheet to workbook
			Chart chart = null;
			if (checkBox1.Checked)
			{
				chart = sheet.Charts.Add(ExcelChartType.Pie3D);
			}
			else
			{
				chart = sheet.Charts.Add(ExcelChartType.Pie);
			}

			CreateChartData(sheet);
			CreateChart(sheet, chart);

			workbook.SaveToFile("Sample.xls");
			ExcelDocViewer(workbook.FileName);
		}


		private void CreateChart(Worksheet  sheet, Chart chart)
		{
			//Set region of chart data
			chart.DataRange = sheet.Range["B2:B5"];
			chart.SeriesDataFromRange = false;

			//Set position of chart
			chart.LeftColumn = 1;
			chart.TopRow = 6;
			chart.RightColumn = 9;
			chart.BottomRow = 25;


			//Chart title
			chart.ChartTitle = "Sales by year";
			chart.ChartTitleArea.IsBold = true;
			chart.ChartTitleArea.Size = 12;


			Charts.ChartSerie cs = chart.Series[0];
			cs.CategoryLabels = sheet.Range["A2:A5"];
			cs.Values = sheet.Range["B2:B5"];
			cs.DataFormat.ShowActiveValue = true;

		}
		private void CreateChartData(Worksheet sheet)
		{
			//Country
			sheet.Range["A1"].Value = "Year";
			sheet.Range["A2"].Value = "2002";
			sheet.Range["A3"].Value = "2003";
			sheet.Range["A4"].Value = "2004";
			sheet.Range["A5"].Value = "2005";

			//Jun
			sheet.Range["B1"].Value = "Sales";
			sheet.Range["B2"].NumberValue = 4000;
			sheet.Range["B3"].NumberValue = 6000;
			sheet.Range["B4"].NumberValue = 7000;
			sheet.Range["B5"].NumberValue = 8500;

			

			//Style
			sheet.Range["A1:B1"].Style.Font.IsBold = true;
			sheet.Range["A2:B2"].Style.KnownColor = ExcelColors.LightYellow;
			sheet.Range["A3:B3"].Style.KnownColor = ExcelColors.LightGreen1;
			sheet.Range["A4:B4"].Style.KnownColor = ExcelColors.LightOrange;
			sheet.Range["A5:B5"].Style.KnownColor = ExcelColors.LightTurquoise;

			//Border
			sheet.Range["A1:B5"].Style.Borders[BordersLineType.EdgeTop].Color = Color.FromArgb(0, 0, 128);
			sheet.Range["A1:B5"].Style.Borders[BordersLineType.EdgeTop].LineStyle = LineStyleType.Thin;
			sheet.Range["A1:B5"].Style.Borders[BordersLineType.EdgeBottom].Color = Color.FromArgb(0, 0, 128);
			sheet.Range["A1:B5"].Style.Borders[BordersLineType.EdgeBottom].LineStyle = LineStyleType.Thin;
			sheet.Range["A1:B5"].Style.Borders[BordersLineType.EdgeLeft].Color = Color.FromArgb(0, 0, 128);
			sheet.Range["A1:B5"].Style.Borders[BordersLineType.EdgeLeft].LineStyle = LineStyleType.Thin;
			sheet.Range["A1:B5"].Style.Borders[BordersLineType.EdgeRight].Color = Color.FromArgb(0, 0, 128);
			sheet.Range["A1:B5"].Style.Borders[BordersLineType.EdgeRight].LineStyle = LineStyleType.Thin;

			sheet.Range["B2:C5"].Style.NumberFormat = "\"$\"#,##0";
		}

		private void ExcelDocViewer( string fileName )
		{
			try
			{
				System.Diagnostics.Process.Start(fileName);
			}
			catch{}
		}

		Private Sub btnRun_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnRun.Click
			Dim workbook As Workbook = New Workbook()

			'Initialize worksheet
			workbook.CreateEmptySheets(1)
			Dim sheet As Worksheet = workbook.Worksheets(0)
			sheet.Name = "Chart data"
			sheet.GridLinesVisible = False

			'Add a new  chart worsheet to workbook
			Dim chart As Chart = Nothing
			If checkBox1.Checked Then
				chart = sheet.Charts.Add(ExcelChartType.Pie3D)
			Else
				chart = sheet.Charts.Add(ExcelChartType.Pie)
			End If

			CreateChartData(sheet)
			CreateChart(sheet, chart)

			workbook.SaveToFile("Sample.xls")
			ExcelDocViewer(workbook.FileName)
		End Sub


		Private Sub CreateChart(ByVal sheet As Worksheet, ByVal chart As Chart)
			'Set region of chart data
			chart.DataRange = sheet.Range("B2:B5")
			chart.SeriesDataFromRange = False

			'Set position of chart
			chart.LeftColumn = 1
			chart.TopRow = 6
			chart.RightColumn = 9
			chart.BottomRow = 25


			'Chart title
			chart.ChartTitle = "Sales by year"
			chart.ChartTitleArea.IsBold = True
			chart.ChartTitleArea.Size = 12


			Dim cs As Charts.ChartSerie = chart.Series(0)
			cs.CategoryLabels = sheet.Range("A2:A5")
			cs.Values = sheet.Range("B2:B5")
			cs.DataFormat.ShowActiveValue = True

		End Sub
		Private Sub CreateChartData(ByVal sheet As Worksheet)
			'Country
			sheet.Range("A1").Value = "Year"
			sheet.Range("A2").Value = "2002"
			sheet.Range("A3").Value = "2003"
			sheet.Range("A4").Value = "2004"
			sheet.Range("A5").Value = "2005"

			'Jun
			sheet.Range("B1").Value = "Sales"
			sheet.Range("B2").NumberValue = 4000
			sheet.Range("B3").NumberValue = 6000
			sheet.Range("B4").NumberValue = 7000
			sheet.Range("B5").NumberValue = 8500



			'Style
			sheet.Range("A1:B1").Style.Font.IsBold = True
			sheet.Range("A2:B2").Style.KnownColor = ExcelColors.LightYellow
			sheet.Range("A3:B3").Style.KnownColor = ExcelColors.LightGreen1
			sheet.Range("A4:B4").Style.KnownColor = ExcelColors.LightOrange
			sheet.Range("A5:B5").Style.KnownColor = ExcelColors.LightTurquoise

			'Border
			sheet.Range("A1:B5").Style.Borders(BordersLineType.EdgeTop).Color = Color.FromArgb(0, 0, 128)
			sheet.Range("A1:B5").Style.Borders(BordersLineType.EdgeTop).LineStyle = LineStyleType.Thin
			sheet.Range("A1:B5").Style.Borders(BordersLineType.EdgeBottom).Color = Color.FromArgb(0, 0, 128)
			sheet.Range("A1:B5").Style.Borders(BordersLineType.EdgeBottom).LineStyle = LineStyleType.Thin
			sheet.Range("A1:B5").Style.Borders(BordersLineType.EdgeLeft).Color = Color.FromArgb(0, 0, 128)
			sheet.Range("A1:B5").Style.Borders(BordersLineType.EdgeLeft).LineStyle = LineStyleType.Thin
			sheet.Range("A1:B5").Style.Borders(BordersLineType.EdgeRight).Color = Color.FromArgb(0, 0, 128)
			sheet.Range("A1:B5").Style.Borders(BordersLineType.EdgeRight).LineStyle = LineStyleType.Thin

			sheet.Range("B2:C5").Style.NumberFormat = """$""#,##0"
		End Sub

		Private Sub ExcelDocViewer(ByVal fileName As String)
			Try
				System.Diagnostics.Process.Start(fileName)
			Catch
			End Try
		End Sub