private void btnSpread_Click(object sender, System.EventArgs e)
{
    //Dimension a Workbook and add a sheet to its Sheets collection
    DataDynamics.SpreadBuilder.Workbook sb = new DataDynamics.SpreadBuilder.Workbook();
    sb.Sheets.AddNew();

    //Set up properties and values for columns, rows and cells as desired
    sb.Sheets[0].Name = "Customer Call List";
    sb.Sheets[0].Columns(0).Width = 2 * 1440;
    sb.Sheets[0].Columns(1).Width = 1440;
    sb.Sheets[0].Columns(2).Width = 1440;
    sb.Sheets[0].Rows(0).Height = 1440/4;
    //Header row
    sb.Sheets[0].Cell(0,0).SetValue("Company Name");
    sb.Sheets[0].Cell(0,0).FontBold = true;
    sb.Sheets[0].Cell(0,1).SetValue("Contact Name");
    sb.Sheets[0].Cell(0,1).FontBold = true;
    sb.Sheets[0].Cell(0,2).SetValue("Phone");
    sb.Sheets[0].Cell(0,2).FontBold = true;
    //First row of data
    sb.Sheets[0].Cell(1,0).SetValue("Data Dynamics");
    sb.Sheets[0].Cell(1,1).SetValue("Mortimer");
    sb.Sheets[0].Cell(1,2).SetValue("(614) 895-3142");

    DataDynamics.SpreadBuilder.Imaging.LineInfo l = new DataDynamics.SpreadBuilder.Imaging.LineInfo();
    l.colL = 3; //starting column for the line
    l.Color = System.Drawing.Color.Salmon; //color for the line
    l.colR = 8; //ending column for the line
    l.dxL = 50;
    l.dxR = 60;
    l.dyB = 80;
    l.dyT = 10;
    l.EndAHLength = DataDynamics.SpreadBuilder.Imaging.LineArrowHeadLengths.Long; //length of the ending arrowhead
    l.EndAHStyle = DataDynamics.SpreadBuilder.Imaging.LineArrowHeadStyles.DoubleEndedOpen; //style of the ending arrowhead
    l.EndAHWidth = DataDynamics.SpreadBuilder.Imaging.LineArrowHeadWidths.Wide; //width of the ending arrowhead
    l.fAuto = true;
    l.iQu = DataDynamics.SpreadBuilder.Imaging.ObjectDirection.UpperLeftToLowerRight; //direction of the line
    l.MoveType = DataDynamics.SpreadBuilder.Imaging.SBFloatingMoveType.MoveSize; //sets whether user will be able to move and/or resize the line
    l.rwB = 8; //bottom row for the line
    l.rwT = 1; //top row for the line
    l.StartAHLength = DataDynamics.SpreadBuilder.Imaging.LineArrowHeadLengths.Long; //length of the starting arrowhead
    l.StartAHStyle = DataDynamics.SpreadBuilder.Imaging.LineArrowHeadStyles.DoubleEndedOpen; //style of the starting arrowhead
    l.StartAHWidth = DataDynamics.SpreadBuilder.Imaging.LineArrowHeadWidths.Wide;
    l.Style = DataDynamics.SpreadBuilder.Imaging.LineStyles.Dash; //style of the line
    l.Weight = 5; //thickness of the line

    sb.Sheets[0].AddLine(l);

    //Save the Workbook to an Excel file
    sb.Save (Application.StartupPath + @"\x.xls");

    MessageBox.Show("Your Spreadsheet, " + sb.Sheets[0].Columns(0).OwnerSheet.Name + ", has been saved to " + Application.StartupPath + "\\x.xls");
}