How to set gradient background color for Excel charts in C#, VB.NET
Syncfusion Essential XlsIO is a .NET Excel library used to create, read, and edit Excel documents. Also, converts Excel documents to PDF files. Using this library, you can set gradient background color to Excel charts in C# and VB.NET.
Steps to set gradient background color in Excel charts, programmatically:
Step 1: Create a new C# console application project.
Create a new C# console application
Step 2: Install the Syncfusion.XlsIO.WinForms NuGet package as reference to your .NET Framework application from NuGet.org.
Install XlsIO NuGet package
Step 3: Include the following namespace in the Program.cs file.
C#
using Syncfusion.XlsIO; using System.Drawing;
VB.NET
Imports Syncfusion.XlsIO Imports System.Drawing
Step 4: Use the following code snippet to gradient background color to Excel charts in C# and VB.NET.
C#
using (ExcelEngine excelEngine = new ExcelEngine())
{
//Instantiate the Excel application object
IApplication application = excelEngine.Excel;
//Open a sample workbook that contains chart
IWorkbook workbook = application.Workbooks.Open("ChartTemplate.xlsx");
//The first worksheet object in the worksheets collection is accessed
IWorksheet worksheet = workbook.Worksheets[0];
//Access the chart
IChart chart = worksheet.Charts[0];
//Set gradient background color to Excel chart
chart.ChartArea.Fill.FillType = ExcelFillType.Gradient;
chart.ChartArea.Fill.GradientStyle = ExcelGradientStyle.Horizontal;
chart.ChartArea.Fill.GradientColorType = ExcelGradientColor.TwoColor;
chart.ChartArea.Fill.ForeColor = Color.FromArgb(255, 190, 32, 38);
chart.ChartArea.Fill.BackColor = Color.FromArgb(255, 32, 190, 38);
//Save the workbook
workbook.SaveAs("Output.xlsx");
}
VB.NET
Using excelEngine As ExcelEngine = New ExcelEngine()
'Instantiate the Excel application object
Dim application As IApplication = excelEngine.Excel
'Open a sample workbook that contains chart
Dim workbook As IWorkbook = application.Workbooks.Open("ChartTemplate.xlsx")
'The first worksheet object in the worksheets collection is accessed
Dim worksheet As IWorksheet = workbook.Worksheets(0)
'Access the chart
Dim chart As IChart = worksheet.Charts(0)
' Set gradient background color to Excel chart
chart.ChartArea.Fill.FillType = ExcelFillType.Gradient
chart.ChartArea.Fill.GradientStyle = ExcelGradientStyle.Horizontal
chart.ChartArea.Fill.GradientColorType = ExcelGradientColor.TwoColor
chart.ChartArea.Fill.ForeColor = Color.FromArgb(255, 190, 32, 38)
chart.ChartArea.Fill.BackColor = Color.FromArgb(255, 32, 190, 38)
'Save the workbook
workbook.SaveAs("Output.xlsx")
End Using
A complete working example of how to set gradient background color to Excel charts in C# and VB.NET can be downloaded from Excel-charts-with gradient-background-color.zip.
By executing the program, you will get the output Excel document as shown below.
Output Excel document
Refer here to explore the rich set of Syncfusion Essential XlsIO features.
See Also:
How to change the color of single Data point in XlsIO chart?
How to apply or change colors in Excel pie chart?
How can I change the font color of the title in Chart?
How can we change the color of the gridlines in XlsIO chart?
How to set trendlines for Excel chart series in C#, VB.NET?
Starting with v16.2.0.x, if you reference Syncfusion assemblies from trial setup or from the NuGet feed, include a license key in your projects. Refer to link to learn about generating and registering Syncfusion license key in your application to use the components without trial message.
