The sample demonstrates how to copy cell data in Excel workbook via Spire.XLS.

using Spire.Xls;

namespace CopyCellData
{
    class Program
    {
        static void Main(string[] args)
        {
            Workbook workbook = new Workbook();
            workbook.LoadFromFile(@"..\..\..\..\Data\parts.xls",ExcelVersion.Version97to2003);
            Worksheet worksheet = workbook.Worksheets[0];
           
            //copy the A3-E5 to A19-E21
            worksheet.Copy(worksheet.Range["A3:E5"],worksheet.Range["A19:E21"],true);

            workbook.SaveToFile("sample.xls", ExcelVersion.Version97to2003);
            System.Diagnostics.Process.Start(workbook.FileName);
        }
    }
}

Imports Spire.Xls

Namespace CopyCellData
	Friend Class Program
		Shared Sub Main(ByVal args() As String)
			Dim workbook As New Workbook()
			workbook.LoadFromFile("..\..\..\..\Data\parts.xls",ExcelVersion.Version97to2003)
			Dim worksheet As Worksheet = workbook.Worksheets(0)

			'copy the A3-E5 to A19-E21
			worksheet.Copy(worksheet.Range("A3:E5"),worksheet.Range("A19:E21"),True)

			workbook.SaveToFile("sample.xls", ExcelVersion.Version97to2003)
			System.Diagnostics.Process.Start(workbook.FileName)
		End Sub
	End Class
End Namespace