Filter

Output: FormControls.xlsx

public void Run()
{
    var workbook = new Workbook();
    var worksheet = workbook.Worksheets[0];

    worksheet.Columns["B"].WidthPixels = 250;
    worksheet.GetRange("A1:A10").SetRowsHeight(53);

    worksheet["A3"].Value = "ABC";
    worksheet["A4"].Value = "BCD";
    worksheet["A5"].Value = "CDE";

    var control = worksheet.FormControls.AddComboBox("Drop Down 1", "B1");
    control.Size.WidthInches = 2;
    control.Size.HeightInches = 0.22;
    control.Position.XPixels = 5;
    control.Position.YPixels = 5;
    control.InputRangeLabel = "Sheet1!$A$3:$A$5";
    control.CellLinkLabel = "A1";

    workbook.SaveAs("FormControls.xlsx");
}