How to create Excel line chart in C#, VB.NET?
This article explains how to create a line chart in Excel using XlsIO.
To create a line chart in Excel using XlsIO, you need to do the following steps.
Line chart created using XlsIO
Steps to create Line chart
- Initialize chart
Create a chart object by calling the worksheet.Charts.Add method and specify the chart type to the ExcelChartType.Line enum value.
// Create the chart IChartShape chart = worksheet.Charts.Add(); // Set chart type to Line chart.ChartType = ExcelChartType.Line;
- Assign data
Set a range of data from the worksheet to chart’s DataRange property. To plot the series values in column and categories in row, set chart’s IsSeriesInRows property to false.
// Set region of Chart data chart.DataRange = worksheet["A1:D6"]; // Set chart series in column for assigned data region chart.IsSeriesInRows = false;
- Apply basic chart elements
Add the basic elements like the chart title, legend and datalabels.
- ChartTitle of the chart object.
- Set DataLabels via DefaultDataPoint.
- Set TRUE to the chart’s HasLegend property, to show the legend.
// Apply chart elements // Set Chart Title chart.ChartTitle = "Line Chart"; // Set DataLabels IChartSerie serie1 = chart.Series[0]; serie1.DataPoints.DefaultDataPoint.DataLabels.IsValue = true; serie1.DataPoints.DefaultDataPoint.DataLabels.Position = ExcelDataLabelPosition.Center; // Set Legend chart.HasLegend = true; chart.Legend.Position = ExcelLegendPosition.Bottom;
To know more about creating charts with various settings using XlsIO, please refer to the documentation.
The following C#/VB.NET complete code snippet shows the creation of Line chart using XlsIO.
C#
using Syncfusion.XlsIO;
using System.Reflection;
using System.IO;
namespace ChartSample
{
class Program
{
static void Main(string[] args)
{
using (ExcelEngine excelEngine = new ExcelEngine())
{
IApplication application = excelEngine.Excel;
application.DefaultVersion = ExcelVersion.Excel2016;
// Open existing workbook with data entered
Assembly assembly = typeof(Program).GetTypeInfo().Assembly;
Stream fileStream = assembly.GetManifestResourceStream("ChartSample.InputTemplate.xlsx");
IWorkbook workbook = application.Workbooks.Open(fileStream);
IWorksheet worksheet = workbook.Worksheets[0];
// Initialize chart
IChartShape chart = worksheet.Charts.Add();
chart.ChartType = ExcelChartType.Line;
// Assign data
chart.DataRange = worksheet["A1:D6"];
chart.IsSeriesInRows = false;
// Apply chart elements
// Set Chart Title
chart.ChartTitle = "Line Chart";
// Set Legend
chart.HasLegend = true;
chart.Legend.Position = ExcelLegendPosition.Bottom;
// Set DataLabels
IChartSerie serie1 = chart.Series[0];
IChartSerie serie2 = chart.Series[1];
IChartSerie serie3 = chart.Series[2];
serie1.DataPoints.DefaultDataPoint.DataLabels.IsValue = true;
serie2.DataPoints.DefaultDataPoint.DataLabels.IsValue = true;
serie3.DataPoints.DefaultDataPoint.DataLabels.IsValue = true;
serie1.DataPoints.DefaultDataPoint.DataLabels.Position = ExcelDataLabelPosition.Center;
serie2.DataPoints.DefaultDataPoint.DataLabels.Position = ExcelDataLabelPosition.Center;
serie3.DataPoints.DefaultDataPoint.DataLabels.Position = ExcelDataLabelPosition.Center;
// Positioning the chart in the worksheet
chart.TopRow = 8;
chart.LeftColumn = 1;
chart.BottomRow = 23;
chart.RightColumn = 8;
// Saving and closing the workbook
Stream stream = File.Create("Output.xlsx");
workbook.SaveAs(stream);
}
}
}
}
VB
Imports Syncfusion.XlsIO
Imports System.Reflection
Imports System.IO
Namespace ChartSample
Class Program
Public Shared Sub Main(ByVal args As String())
Using excelEngine As ExcelEngine = New ExcelEngine()
Dim application As IApplication = excelEngine.Excel
application.DefaultVersion = ExcelVersion.Excel2016
'Open existing workbook with data entered
Dim assembly As Assembly = GetType(Program).GetTypeInfo().Assembly
Dim fileStream As Stream = assembly.GetManifestResourceStream("ChartSample.InputTemplate.xlsx")
Dim workbook As IWorkbook = application.Workbooks.Open(fileStream)
Dim worksheet As IWorksheet = workbook.Worksheets(0)
'Initialize chart
Dim chart As IChartShape = worksheet.Charts.Add()
chart.ChartType = ExcelChartType.Line
'Assign data
chart.DataRange = worksheet("A1:D6")
chart.IsSeriesInRows = False
'Apply chart elements
'Set Chart Title
chart.ChartTitle = "Line Chart"
'Set Legend
chart.HasLegend = True
chart.Legend.Position = ExcelLegendPosition.Bottom
'Set Datalabels
Dim serie1 As IChartSerie = chart.Series(0)
Dim serie2 As IChartSerie = chart.Series(1)
Dim serie3 As IChartSerie = chart.Series(2)
serie1.DataPoints.DefaultDataPoint.DataLabels.IsValue = True
serie2.DataPoints.DefaultDataPoint.DataLabels.IsValue = True
serie3.DataPoints.DefaultDataPoint.DataLabels.IsValue = True
serie1.DataPoints.DefaultDataPoint.DataLabels.Position = ExcelDataLabelPosition.Center
serie2.DataPoints.DefaultDataPoint.DataLabels.Position = ExcelDataLabelPosition.Center
serie3.DataPoints.DefaultDataPoint.DataLabels.Position = ExcelDataLabelPosition.Center
'Positioning chart in the worksheet
chart.TopRow = 8
chart.LeftColumn = 1
chart.BottomRow = 23
chart.RightColumn = 8
'Saving and closing the workbook
Dim stream As Stream = File.Create("Output.xlsx")
workbook.SaveAs(stream)
End Using
End Sub
End Class
End Namespace
Take a moment to peruse the documentation where you can find basic Excel document processing options along with the features like import and export data, chart, formulas, conditional formatting, data validation, tables, pivot tables and, protect the Excel documents, and most importantly, the PDF, CSV and Image conversions with code examples.
Conclusion
I hope you enjoyed learning about how to create Excel line chart in C#, VB.NET.
You can refer to our XIsIO’s feature tour page to learn about its other groundbreaking features. Explore our UG documentation and online demos to understand how to manipulate data in Excel documents.
If you are an existing user, you can access our latest components from the License and Downloads page. For new users, you can try our 30-day free trial to check out XlsIO and other Syncfusion® components.
If you have any queries or require clarification, please let us know in the comments below or contact us through our support forums, Support Tickets, or feedback portal. We are always happy to assist you!
