sheet.Range["A1"].Style.Color = Color.Black;
sheet.Range["B1"].Style.Color = Color.FromArgb(255, 0, 176, 80);
sheet.Range["C1"].Style.Color = Color.FromName("red");
sheet.Range["D1"].Style.Color = Color.FromKnownColor(KnownColor.AliceBlue);
Workbook target = new Workbook();
target.LoadFromFile(path + "Input.XLS");
Workbook file1 = new Workbook();
file1.LoadFromFile(path + "Input (2).XLS");
foreach (Worksheet sheet in file1.Worksheets)
{
target.Worksheets.AddCopy(sheet);
}
target.SaveToFile("11957result.xlsx",ExcelVersion.Version2010);
target.Worksheets[0].MoveWorksheet(1);