912298-Add FAQ for how to set and format time values in Excel using Timespan

FAQ/Timespan/.NET/Set and format time values/README.md

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+# How to set and format time values in Excel using TimeSpan?
+
+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 set and format time values in Excel using TimeSpan.
+
+```csharp
+using (ExcelEngine excelEngine = new ExcelEngine())
+{
+    IApplication application = excelEngine.Excel;
+    application.DefaultVersion = ExcelVersion.Xlsx;
+    IWorkbook workbook = application.Workbooks.Create(1);
+    IWorksheet sheet = workbook.Worksheets[0];
+
+    TimeSpan ts = new TimeSpan(12, 32, 38);
+
+    //Convert the TimeSpan to a fractional day value that Excel understands
+    double excelTimeValue = ts.TotalDays;
+
+    //Set value in cell
+    sheet.SetValueRowCol(excelTimeValue, 1, 1);
+
+    //Apply the time format to the cell to display it as 'hh:mm:ss'
+    sheet.Range[1, 1].NumberFormat = "hh:mm:ss";
+
+    #region Save
+    //Saving the workbook
+    FileStream outputStream = new FileStream(Path.GetFullPath("Output/Output.xlsx"), FileMode.Create, FileAccess.Write);
+    workbook.SaveAs(outputStream);
+    #endregion
+
+    //Dispose streams
+    outputStream.Dispose();
+}
+```

FAQ/Timespan/.NET/Set and format time values/Set and format time values.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}") = "Set and format time values", "Set and format time values\Set and format time values.csproj", "{AB334E92-14FF-41AB-9D67-88BF1143B550}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{AB334E92-14FF-41AB-9D67-88BF1143B550}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{AB334E92-14FF-41AB-9D67-88BF1143B550}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{AB334E92-14FF-41AB-9D67-88BF1143B550}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{AB334E92-14FF-41AB-9D67-88BF1143B550}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

FAQ/Timespan/.NET/Set and format time values/Set and format time values/Program.cs

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+using System;
+using System.IO;
+using Syncfusion.XlsIO;
+
+namespace SetAndFormatTimeValues
+{
+    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 sheet = workbook.Worksheets[0];
+
+                TimeSpan ts = new TimeSpan(12, 32, 38);
+
+                //Convert the TimeSpan to a fractional day value that Excel understands
+                double excelTimeValue = ts.TotalDays;
+
+                //Set value in cell
+                sheet.SetValueRowCol(excelTimeValue, 1, 1);
+
+                //Apply the time format to the cell to display it as 'hh:mm:ss'
+                sheet.Range[1, 1].NumberFormat = "hh:mm:ss";
+
+                #region Save
+                //Saving the workbook
+                FileStream outputStream = new FileStream(Path.GetFullPath("Output/Output.xlsx"), FileMode.Create, FileAccess.Write);
+                workbook.SaveAs(outputStream);
+                #endregion
+
+                //Dispose streams
+                outputStream.Dispose();
+            }
+        }
+    }
+}

FAQ/Timespan/.NET/Set and format time values/Set and format time values/Set and format time values.csproj

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