Column Width Excel file

DataTable dt = (DataTable) ViewState["CurrentTable"];



            Workbook book = new Workbook();
            WorksheetStyle style = book.Styles.Add("Entete");
            style.Font.Bold = true;
            style.Font.Color = "White";
            style.Alignment.Horizontal = StyleHorizontalAlignment.Center;
            style.Interior.Color = "Blue";
            style.Interior.Pattern = StyleInteriorPattern.Solid;

            //create the first sheet
            Worksheet sheet = book.Worksheets.Add("Detail Seance");
            
            //The second sheet
            Worksheet sheetConf = book.Worksheets.Add("Total");

         
            //The header
            WorksheetRow row = sheet.Table.Rows.Add();
            row.Cells.Add(new WorksheetCell("Historique Exo"){ MergeAcross = 5 });
            
            row = sheet.Table.Rows.Add();
            Excel.Range range;
            
            foreach (DataColumn dc in dt.Columns)
            {
                row.Cells.Add(new WorksheetCell(dc.ColumnName, DataType.String, "Entete"));
                row.AutoFitHeight
            }

            int j;
            foreach (DataRow dr in dt.Rows)
            {
                row = sheet.Table.Rows.Add();
                for (j = 0; j < dt.Columns.Count; j++)
                {
                      row.Cells.Add(new WorksheetCell(dr[j].ToString()));
                    
                }
            }
            
            //save Excel file
            book.Save(Response.OutputStream);