UG documentation 1005966: FAQ for how to find the last row of a particular column in a Excel file using XlsIO?

FAQ/Last Row/.NET/Last Row/Last Row.slnx

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+<Solution>
+  <Project Path="Last Row/Last Row.csproj" />
+</Solution>

FAQ/Last Row/.NET/Last Row/Last Row/Last Row.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>Last_Row</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/Last Row/.NET/Last Row/Last Row/Program.cs

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+using Syncfusion.XlsIO;
+using Syncfusion.XlsIO.Implementation;
+using Syncfusion.XlsIO.Implementation.Collections;
+
+class Program
+{
+    static void Main(string[] args)
+    {
+        // Create an instance of ExcelEngine
+        using (ExcelEngine excelEngine = new ExcelEngine())
+        {
+            IApplication application = excelEngine.Excel;
+            IWorkbook workbook = application.Workbooks.Create(1);
+
+            IWorksheet sheet = workbook.Worksheets[0];
+            sheet["A1:B10"].Text = "10";
+            sheet["C1:C5"].Text = "20";
+
+            int lastRow = GetLastRow(3, sheet as WorksheetImpl);
+            Console.WriteLine("Last Row in Column C: " + lastRow);
+
+            workbook.SaveAs(Path.GetFullPath("Output/Output.xlsx"));
+        }
+    }
+
+    private static int GetLastRow(int column, WorksheetImpl worksheet)
+    {
+        int firstRow = worksheet.UsedRange.Row;
+        int lastRow = worksheet.UsedRange.LastRow;
+        for (int iRow = lastRow; iRow >= firstRow; iRow--)
+        {
+            RowStorage rowStorage = WorksheetHelper.GetOrCreateRow(worksheet, iRow - 1, false);
+            if (rowStorage != null)
+            {
+                RowStorageEnumerator enumerator = rowStorage.GetEnumerator(worksheet.RecordExtractor) as RowStorageEnumerator;
+                while (enumerator.MoveNext())
+                {
+                    if (enumerator.ColumnIndex + 1 == column)
+                        return iRow;
+                }
+            }
+        }
+        return -1;
+    }
+}