ClosedXML/ClosedXML_Examples/Ranges/TransposeRangesPlus.cs

using System.IO;
using ClosedXML.Excel;

namespace ClosedXML_Examples
{
    public class TransposeRangesPlus : IXLExample
    {
        public void Create(string filePath)
        {
            string tempFile = ExampleHelper.GetTempFilePath(filePath);
            try
            {
                new BasicTable().Create(tempFile);
                var workbook = new XLWorkbook(tempFile);

                var ws = workbook.Worksheet(1);

                var rngTable = ws.Range("B2:F6");

                rngTable.Row(rngTable.RowCount() - 1).Delete(XLShiftDeletedCells.ShiftCellsUp);

                // Place some markers
                var cellNextRow = ws.Cell(rngTable.RangeAddress.LastAddress.RowNumber + 1, rngTable.RangeAddress.LastAddress.ColumnNumber);
                cellNextRow.Value = "ColumnRight Row";
                var cellNextColumn = ws.Cell(rngTable.RangeAddress.LastAddress.RowNumber, rngTable.RangeAddress.LastAddress.ColumnNumber + 1);
                cellNextColumn.Value = "ColumnRight Column";

                rngTable.Transpose(XLTransposeOptions.MoveCells);
                rngTable.Transpose(XLTransposeOptions.MoveCells);
                rngTable.Transpose(XLTransposeOptions.ReplaceCells);
                rngTable.Transpose(XLTransposeOptions.ReplaceCells);

                ws.Columns().AdjustToContents();

                workbook.SaveAs(filePath);
            }
            finally
            {
                if (File.Exists(tempFile))
                {
                    File.Delete(tempFile);
                }
            }
        }
    }
}