944873-FAQ for ParseWorksheetsOnDemand open option-XlsIOExample

FAQ/Worksheet/.NET/Parse Worksheets On Demand/Parse Worksheets On Demand.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}") = "Parse Worksheets On Demand", "Parse Worksheets On Demand\Parse Worksheets On Demand.csproj", "{A53113E8-EBC9-4BAD-B29D-59FDA607B4C7}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{A53113E8-EBC9-4BAD-B29D-59FDA607B4C7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A53113E8-EBC9-4BAD-B29D-59FDA607B4C7}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A53113E8-EBC9-4BAD-B29D-59FDA607B4C7}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A53113E8-EBC9-4BAD-B29D-59FDA607B4C7}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

FAQ/Worksheet/.NET/Parse Worksheets On Demand/Parse Worksheets On Demand/Parse Worksheets On Demand.csproj

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

FAQ/Worksheet/.NET/Parse Worksheets On Demand/Parse Worksheets On Demand/Program.cs

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+using System;
+using System.IO;
+using Syncfusion.XlsIO;
+
+
+
+namespace Parse_Worksheets_On_Demand
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            using (ExcelEngine excelEngine = new ExcelEngine())
+            {
+                IApplication application = excelEngine.Excel;
+                application.DefaultVersion = ExcelVersion.Xlsx;
+                FileStream inputStream = new FileStream("Data/Input.xlsx", FileMode.Open, FileAccess.Read);
+                IWorkbook workbook = application.Workbooks.Open(inputStream, ExcelOpenType.Automatic, ExcelParseOptions.ParseWorksheetsOnDemand);
+
+                // Access the first worksheet (triggers parsing)
+                IWorksheet worksheet = workbook.Worksheets[0];
+
+                // Process your data
+                string value = worksheet.Range["A1"].Text;
+
+                // Save to file system
+                FileStream stream = new FileStream("Output/Output.xlsx", FileMode.OpenOrCreate, FileAccess.ReadWrite);
+                workbook.SaveAs(stream);
+                workbook.Close();
+                excelEngine.Dispose();
+            }
+
+        }
+
+    }
+}

FAQ/Worksheet/.NET/Parse Worksheets On Demand/README.md

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+# How to avoid processing unnecessary worksheets when opening an Excel document using C#?
+
+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.XlsIO;
+
+Step 5: Include the below code snippet in **Program.cs** to avoid processing unnecessary worksheets when opening an Excel document using C#?
+```csharp
+using (ExcelEngine excelEngine = new ExcelEngine())
+{
+    IApplication application = excelEngine.Excel;
+    application.DefaultVersion = ExcelVersion.Xlsx;
+    FileStream inputStream = new FileStream("Input.xlsx", FileMode.Open, FileAccess.Read);
+    IWorkbook workbook = application.Workbooks.Open(inputStream,ExcelOpenType.Automatic, ExcelParseOptions.ParseWorksheetsOnDemand);
+    // Access the first worksheet (triggers parsing)
+    IWorksheet worksheet = workbook.Worksheets[0];
+    // Process your data
+    string value = worksheet.Range["A1"].Text;
+    // Save to file system
+    FileStream stream = new FileStream("Output.xlsx", FileMode.OpenOrCreate, FileAccess.ReadWrite);
+    workbook.SaveAs(stream);
+    workbook.Close();
+    excelEngine.Dispose();
+}
+```
+