264527-How to create a defined name for discontinuous range of cells in a worksheet

Use Cases/Create named ranges for discontinuous cell ranges/.NET/Discontinuous Named Ranges/Discontinuous Named Ranges.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36127.28 d17.14
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Discontinuous Named Ranges", "Discontinuous Named Ranges\Discontinuous Named Ranges.csproj", "{82F1D1C3-EB0A-4C8C-92FA-7B25000B27B8}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{82F1D1C3-EB0A-4C8C-92FA-7B25000B27B8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{82F1D1C3-EB0A-4C8C-92FA-7B25000B27B8}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{82F1D1C3-EB0A-4C8C-92FA-7B25000B27B8}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{82F1D1C3-EB0A-4C8C-92FA-7B25000B27B8}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {DB34F7F9-90F8-41CC-AEE8-1E232DB32423}
+	EndGlobalSection
+EndGlobal

Use Cases/Create named ranges for discontinuous cell ranges/.NET/Discontinuous Named Ranges/Discontinuous Named Ranges/Discontinuous Named Ranges.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>Discontinuous_Named_Ranges</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>

Use Cases/Create named ranges for discontinuous cell ranges/.NET/Discontinuous Named Ranges/Discontinuous Named Ranges/Program.cs

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+using Syncfusion.XlsIO;
+
+class Program
+{
+    public 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 sheet = workbook.Worksheets[0];
+
+            //Create a range collection for discontinuous cells
+            IRanges ranges = sheet.CreateRangesCollection();
+
+            //Add different ranges to the collection
+            ranges.Add(sheet["D2:D3"]);
+            ranges.Add(sheet["D10:D11"]);
+
+            //Create a named range with the collection
+            workbook.Names.Add("test", ranges);
+
+            #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();
+        }
+    }
+}