940650-Set pie slice color and pie data label call out in XlsIO

Create and Edit Charts/Data Labels/.NET/Pie Data Label Call Out/Pie Data Label Call Out.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.12.35506.116 d17.12
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Pie Data Label Call Out", "Pie Data Label Call Out\Pie Data Label Call Out.csproj", "{EEE50E59-2AB6-4EFE-856D-C65C830F3B6B}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{EEE50E59-2AB6-4EFE-856D-C65C830F3B6B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{EEE50E59-2AB6-4EFE-856D-C65C830F3B6B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{EEE50E59-2AB6-4EFE-856D-C65C830F3B6B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{EEE50E59-2AB6-4EFE-856D-C65C830F3B6B}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

Create and Edit Charts/Data Labels/.NET/Pie Data Label Call Out/Pie Data Label Call Out/Pie Data Label Call Out.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>Pie_Data_Label_Call_Out</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Syncfusion.XlsIO.Net.Core" Version="*" />
+  </ItemGroup>
+
+  <ItemGroup>
+	<None Update="Output\*">
+		<CopyToOutputDirectory>Always</CopyToOutputDirectory>
+	</None>
+  </ItemGroup>
+
+</Project>

Create and Edit Charts/Data Labels/.NET/Pie Data Label Call Out/Pie Data Label Call Out/Program.cs

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+using System;
+using System.IO;
+using Syncfusion.Drawing;
+using Syncfusion.XlsIO;
+
+namespace Pie_Data_Label_CallOuts
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            using (ExcelEngine excelEngine = new ExcelEngine())
+            {
+                IApplication application = excelEngine.Excel;
+                application.DefaultVersion = ExcelVersion.Xlsx;
+                IWorkbook workbook = application.Workbooks.Create(1);
+                IWorksheet worksheet = workbook.Worksheets[0];
+
+                //Assigning data to cells
+                worksheet.Range["A1"].Text = "Category";
+                worksheet.Range["B1"].Text = "Value";
+                worksheet.Range["A2"].Text = "Apples";
+                worksheet.Range["B2"].Number = 30;
+                worksheet.Range["A3"].Text = "Bananas";
+                worksheet.Range["B3"].Number = 45;
+                worksheet.Range["A4"].Text = "Cherries";
+                worksheet.Range["B4"].Number = 25;
+
+                //Add a pie chart to the worksheet
+                IChartShape chart = worksheet.Charts.Add();
+
+                //Set data range for the chart
+                chart.DataRange = worksheet.Range["A1:B4"];
+
+                //Specify chart type
+                chart.ChartType = ExcelChartType.Pie;
+
+                //Set chart properties
+                chart.IsSeriesInRows = false;
+                chart.ChartTitle = "Fruit Distribution";
+                chart.HasLegend = true;
+                chart.Legend.Position = ExcelLegendPosition.Right;
+
+                //Position the chart within the worksheet
+                chart.TopRow = 6;
+                chart.LeftColumn = 1;
+                chart.BottomRow = 20;
+                chart.RightColumn = 10;
+
+                //Customize data label for the first data point
+                IChartSerie series = chart.Series[0];                      
+                series.DataPoints[0].DataLabels.IsCategoryName = true;
+                series.DataPoints[0].DataLabels.IsValue = true;
+
+                //Enable data label callouts for the first data point
+                series.DataPoints[0].DataLabels.ShowLeaderLines = true;
+
+                //Manually resizing data label area using Manual Layout
+                chart.Series[0].DataPoints[0].DataLabels.Layout.ManualLayout.Left = 0.09;
+                chart.Series[0].DataPoints[0].DataLabels.Layout.ManualLayout.Top = 0.01;
+
+                #region Save
+                //Saving the workbook
+                FileStream outputStream = new FileStream(Path.GetFullPath("Output.xlsx"), FileMode.Create, FileAccess.Write);
+                workbook.SaveAs(outputStream);
+                #endregion
+
+                //Dispose streams
+                outputStream.Dispose();
+            }
+        }
+    }
+}

Create and Edit Charts/Data Labels/.NET/Pie Data Label Call Out/README.md

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+# How to display data label callouts in pie charts using XlsIO?
+
+Step 1: Create a New C# Console Application Project.
+
+Step 2: Name the Project.
+
+Step 3: Install the [Syncfusion.XlsIO.Net.Core](https://www.nuget.org/packages/Syncfusion.XlsIO.Net.Core) NuGet package as reference to your .NET Standard applications from [NuGet.org](https://www.nuget.org).
+
+Step 4: Include the following namespaces in the **Program.cs** file.
+
+```csharp
+using System;
+using System.IO;
+using Syncfusion.Drawing;
+using Syncfusion.XlsIO;
+```
+
+Step 5: Include the below code snippet in **Program.cs** to display data label callouts in pie charts.
+```csharp
+using (ExcelEngine excelEngine = new ExcelEngine())
+{
+    IApplication application = excelEngine.Excel;
+    application.DefaultVersion = ExcelVersion.Xlsx;
+    IWorkbook workbook = application.Workbooks.Create(1);
+    IWorksheet worksheet = workbook.Worksheets[0];
+
+    //Assigning data to cells
+    worksheet.Range["A1"].Text = "Category";
+    worksheet.Range["B1"].Text = "Value";
+    worksheet.Range["A2"].Text = "Apples";
+    worksheet.Range["B2"].Number = 30;
+    worksheet.Range["A3"].Text = "Bananas";
+    worksheet.Range["B3"].Number = 45;
+    worksheet.Range["A4"].Text = "Cherries";
+    worksheet.Range["B4"].Number = 25;
+
+    //Add a pie chart to the worksheet
+    IChartShape chart = worksheet.Charts.Add();
+
+    //Set data range for the chart
+    chart.DataRange = worksheet.Range["A1:B4"];
+
+    //Specify chart type
+    chart.ChartType = ExcelChartType.Pie;
+
+    //Set chart properties
+    chart.IsSeriesInRows = false;
+    chart.ChartTitle = "Fruit Distribution";
+    chart.HasLegend = true;
+    chart.Legend.Position = ExcelLegendPosition.Right;
+
+    //Position the chart within the worksheet
+    chart.TopRow = 6;
+    chart.LeftColumn = 1;
+    chart.BottomRow = 20;
+    chart.RightColumn = 10;
+
+    //Customize data label for the first data point
+    IChartSerie series = chart.Series[0];                      
+    series.DataPoints[0].DataLabels.IsCategoryName = true;
+    series.DataPoints[0].DataLabels.IsValue = true;
+
+    //Enable data label callouts for the first data point
+    series.DataPoints[0].DataLabels.ShowLeaderLines = true;
+
+    //Manually resizing data label area using Manual Layout
+    chart.Series[0].DataPoints[0].DataLabels.Layout.ManualLayout.Left = 0.09;
+    chart.Series[0].DataPoints[0].DataLabels.Layout.ManualLayout.Top = 0.01;
+
+    #region Save
+    //Saving the workbook
+    FileStream outputStream = new FileStream(Path.GetFullPath("Output.xlsx"), FileMode.Create, FileAccess.Write);
+    workbook.SaveAs(outputStream);
+    #endregion
+
+    //Dispose streams
+    outputStream.Dispose();
+}
+```