Create Excel Line Chart in C#, VB.NET

Line chart is a type of graph, which displays information as a series of data points connected by straight line segments. It is a basic type of chart common in many fields. It is an extension of a scatter graph, and is created by connecting a series of points that represent individual measurements with line segments. A line chart is often used to visualize a trend in data over intervals of time – a time series – thus the line is often drawn chronologically.

Spire.XLS for .NET allows user to create kinds of charts in Excel including Line Chart. Use C# Create Excel Line chart could be as easy as in Microsoft Excel. The whole process is almost the same such as write chart data, set region/position of chart, Write chart title, chart data information, etc. The difference is we need fill these data in C# application with codes around. Below is a sample for C# code used to create Excel line charts. Download Spire.XLS (or Spire.Office) with .NET framework 2.0 (or above) together and use the code to create Excel Line Chart right now.

[C#]

using Spire.Xls;
using Spire.Xls.Charts;

namespace Spire.Xls.Sample
{
	public class Form1 : System.Windows.Forms.Form
	{
		static void Main()
		{
			Application.Run(new Form1());
		}

		private void btnRun_Click(object sender, System.EventArgs e)
		{
			Workbook workbook = new Workbook();

			//Initailize worksheet
			workbook.CreateEmptySheets(1);
			Worksheet sheet = workbook.Worksheets[0];
			sheet.Name = "Chart data";
			sheet.GridLinesVisible = false;

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

			//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 (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",ExcelVersion.Version97to2003);
			ExcelDocViewer(workbook.FileName);
		}

		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";
		}

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

		private void btnAbout_Click(object sender, System.EventArgs e)
		{
			Close();
		}


	}
}

After running your application with the code above, you will find an Excel Line Chart created.

Generate Excel Line Chart

Create Excel Line Chart in C#, VB.NET

See Also