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EPPlus - Create advanced Excel spreadsheets

Is a .net library that reads and writes Excel 2007/2010 files using the Open Office Xml format (xlsx). supports:

Cell Ranges Cell styling (Border, Color, Fill, Font, Number, Alignments) Charts Pictures Shapes Comments Tables Protection Encryption Pivot tables Data validation Conditional formatting VBA Formula calculation Many more…

http://epplus.codeplex.com/

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			//get the data from dbase
            DataTable dT = SQLc.GetDATATABLE(q);

            //if file exists will try to open it, as excel XLSX
            FileInfo newfILE= new FileInfo(@"C:\test.xlsx");

            using (ExcelPackage package = new ExcelPackage(newfILE))
            {
                //create a sheet, name it DATA
                ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("DATA");
                //get the first sheet - ExcelWorksheet worksheet = package.Workbook.Worksheets[1];

                int row = 1;
                int col = 0;

				//print col name to sheet
                foreach (DataColumn col_item in dT.Columns)
                {
                    col += 1;
                    worksheet.Cells[row, col].Value = col_item.Caption;
                }

                foreach (DataRow item in dT.Rows)
                {
                    //row counter
                    row += 1;
                    col = 0;

					//for each column get his value
                    foreach (var col_item in dT.Columns)
                    {
                        col += 1;
                        worksheet.Cells[row, col].Value = item[col - 1].ToString();
                    }

					//add one extra column at the end and use excel formula to subtract (datediff) startdate&enddate fields came from dbase
					//use of NETWORKDAYS (doesnt calculate the weekend) - use of IFERROR - avoid error cells when the date by dbase is null
					//using lib ExcelAddress function with the vars row+col we go there
					//..
                    col += 1;
                    worksheet.Cells[new ExcelAddress(row, col, row, col).Address].Formula = string.Format("IFERROR(NETWORKDAYS({0},{1}),0)", new ExcelAddress(row, 3, row, 3).Address, new ExcelAddress(row, 10, row, 10).Address);
                }

				//linq to datatable - group by (get unique values)
                var product_codes_grp = from r in dT.AsEnumerable()
                          group r by r.Field<string>("PRODUCT_NAME") into grp
                          select new
                          {
                              product_code = grp.Key
                          };

				//go to second sheet
                ExcelWorksheet worksheet2 = package.Workbook.Worksheets[2];

				//write the #header text# on first row
                row = 1;
                worksheet2.Cells[1, 1].Value = "PRODUCT_NAME";
                worksheet2.Cells[1, 2].Value = "Days";
                worksheet2.Cells[1, 3].Value = "Average";

				//for each product
                foreach (var item in product_codes_grp)
                {
                    row += 1;

					//write the product name
                    col = 1;
                    worksheet2.Cells[row, col].Value = item.PRODUCT_NAME;

					//on next column write the SUM of datediff column (last column) we add at first steps
					//using again an excel function we get only the lines for current PRODUCT_NAME
					//what says : goto sheet DATA get the value of column FN, where the U column equals with PRODUCT_NAME
                    col += 1;
                    worksheet2.Cells[row, col].Formula = "SUMIFS(DATA!FN:FN,DATA!U:U,\"" + item.PRODUCT_NAME + "\")";
                   // worksheet2.Cells[row, col].Style.Numberformat.Format = "#.##";

				    //in continue, do the same but do the AVERAGE
                    col += 1;
                    worksheet2.Cells[row, col].Formula = "AVERAGEIFS(DATA!FN:FN,DATA!U:U,\"" + item.PRODUCT_NAME + "\")";
                   // worksheet2.Cells[row, col].Style.Numberformat.Format = "#.##";
                }

				//autofit
                worksheet2.Cells[worksheet2.Dimension.Address].AutoFitColumns();

                //****************
                //PIVOT
                //****************
                //var data_sheet = package.Workbook.Worksheets["DATA"];

                //get the data of first sheet created at first
                ExcelRangeBase dataRange;
                dataRange = worksheet.Cells[worksheet.Dimension.Address];

                //create a new sheet 
                var wsPivot = package.Workbook.Worksheets.Add("STATS");

                //on A1, with datarange the DATA sheet, create a PivotTable
                ExcelPivotTable pivot = wsPivot.PivotTables.Add(wsPivot.Cells["A1"], dataRange, "PivotTable1");

                //Add row field
                pivot.RowFields.Add(pivot.Fields["PRODUCT_NAME"]);

                //Set row caption
                pivot.RowHeaderCaption = "Products";

                //Add column field
                pivot.ColumnFields.Add(pivot.Fields["FN"]);
                // pivot.DataOnRows = false;
                // pivot.RowGrandTotals = true;
                pivot.DataFields.Add(pivot.Fields["FN"]);
                pivot.DataFields[0].Function = DataFieldFunctions.Count;
                pivot.DataFields[0].Name = "GROUP BY XLS!";

                //****************
                //PIVOT CHART PIES
                //****************
                //add extra sheet for chart pies
                var wsPivotChart = package.Workbook.Worksheets.Add("STAT_PIE");
                //chart by pivot1 table - http://epplus.codeplex.com/wikipage?title=StatisticsSheetExample
                var chart = wsPivotChart.Drawings.AddChart("PivotChart1", eChartType.Pie, pivot) as ExcelPieChart;
                chart.SetPosition(1, 0, 0, 0);
                chart.SetSize(600, 600);
                chart.Title.Text = "Products";
                chart.DataLabel.ShowCategory = true;
                chart.DataLabel.ShowPercent = true;
                chart.DataLabel.ShowLeaderLines = true;

                //********************************
                //IMPORT PNG FILE TO NEW SHEET
                //********************************

                try
                {
					//save MSCHART to a PNG
                    string fl = Path.GetTempFileName();
                    chart_sc_report.SaveImage(fl, ChartImageFormat.Png);

					//create a new sheet
                    ExcelWorksheet worksheet3 = package.Workbook.Worksheets.Add("product_picture");

                    // img variable actually is your image path
                    System.Drawing.Image myImage = System.Drawing.Image.FromFile(fl);

                    var pic = worksheet3.Drawings.AddPicture("NAME", myImage);

                    // Row, RowoffsetPixel, Column, ColumnOffSetPixel
                    pic.SetPosition(1, 0, 2, 0);
                }
                catch (Exception x)
                {
                    MessageBox.Show("Error when generating chart image\r\n\r\n" + x.Message, Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                }

                //****************
                //PLAIN CHART 
                //****************
				//first put data to XLS cells by query the datatable
				var ci = new CultureInfo("en-US");
				DateTime startdate = DateTime.ParseExact(dtp3.Value.ToString("01/MM/yyyy"), "dd/MM/yyyy", ci);
				DateTime enddate = DateTime.ParseExact(dtp4.Value.ToString("01/MM/yyyy"), "dd/MM/yyyy", ci);

				//scroll2bottom for function - function diff date1 - date2 in months
				int product_cells = GetMonthsBetween(dtp3.Value, dtp4.Value);

				//////////////////////////////////////////////////////////////////////////////////////////////
				//////////////////////////////////////////////////////////////////////////////////// product START
				row = 1;
				col = 1;

				//product_SPLIT
				ExcelWorksheet worksheet_product_split = package.Workbook.Worksheets.Add("product_SPLIT");
				worksheet_product_split.Cells[row, col].Value = "product Split";
				worksheet_product_split.Cells["A1:B2"].Merge = true;
				worksheet_product_split.Cells["C1:C2"].Merge = true;
				worksheet_product_split.Cells["C1"].Value = "Target";
				worksheet_product_split.Cells["D1"].Value = "Actuals per month";
				worksheet_product_split.Cells[new ExcelAddress(1,4,1,product_cells+3).Address].Merge = true;

				worksheet_product_split.Cells["A3"].Value = "shareware";
				worksheet_product_split.Cells["A3:A4"].Merge = true;
				worksheet_product_split.Cells["A5"].Value = "freeware";
				worksheet_product_split.Cells["A5:A6"].Merge = true;

				worksheet_product_split.Cells["B3"].Value = "storage";
				worksheet_product_split.Cells["B4"].Value = "sold";
				worksheet_product_split.Cells["B5"].Value = "storage";
				worksheet_product_split.Cells["B6"].Value = "sold";

				col = 4;
				row = 3;
				while (startdate < enddate)="" {="" worksheet_product_split.cells[2,="" col].value="startdate.ToString(" dd/mm/yyyy")"="" +="" "="" -="" "="" +="" startdate.addmonths(1).tostring("dd/mm/yyyy");="" mandatory="" for="" calculation="" int="" shareware_sold_total="(from" r="" in="" dtenumerable="" where=""><datetime>("OpenTime") > startdate && r.Field<datetime>("OpenTime") < startdate.addmonths(1))="" &&=""><string>("sold_product") != null && r.Field<string>("queue").Equals("shareware"))
												   select r).Count();

					int shareware_storage_total = (from r in dTenumerable
												   where (r.Field<datetime>("OpenTime") > startdate && r.Field<datetime>("OpenTime") < startdate.addmonths(1))="" &&=""><string>("storage_product") != null && r.Field<string>("queue").Equals("shareware"))
												   select r).Count();

					int freeware_sold_total = (from r in dTenumerable
												   where (r.Field<datetime>("OpenTime") > startdate && r.Field<datetime>("OpenTime") < startdate.addmonths(1))="" &&=""><string>("sold_product") != null && r.Field<string>("queue").Equals("freeware"))
												   select r).Count();

					int freeware_storage_total = (from r in dTenumerable
													where (r.Field<datetime>("OpenTime") > startdate && r.Field<datetime>("OpenTime") < startdate.addmonths(1))="" &&=""><string>("storage_product") != null && r.Field<string>("queue").Equals("freeware"))
													select r).Count();
					// mandatory for calculation

					int shareware_sold_made = (from r in dTenumerable
												 where (r.Field<datetime>("OpenTime") > startdate && r.Field<datetime>("OpenTime") < startdate.addmonths(1))="" &&=""><string>("sold_product") != null && (r.Field<string>("sold_product").Equals("MADE") && r.Field<string>("queue").Equals("shareware")))
												 select r).Count();

					int shareware_storage_made = (from r in dTenumerable
												  where (r.Field<datetime>("OpenTime") > startdate && r.Field<datetime>("OpenTime") < startdate.addmonths(1))="" &&=""><string>("storage_product") != null && (r.Field<string>("storage_product").Equals("MADE") && r.Field<string>("queue").Equals("shareware")))
												  select r).Count(); 

					int freeware_sold_made = (from r in dTenumerable
											  where (r.Field<datetime>("OpenTime") > startdate && r.Field<datetime>("OpenTime") < startdate.addmonths(1))="" &&=""><string>("sold_product") != null && (r.Field<string>("sold_product").Equals("MADE") && r.Field<string>("queue").Equals("freeware")))
											  select r).Count();

					int freeware_storage_made = (from r in dTenumerable
											   where (r.Field<datetime>("OpenTime") > startdate && r.Field<datetime>("OpenTime") < startdate.addmonths(1))="" &&=""><string>("storage_product") != null && (r.Field<string>("storage_product").Equals("MADE") && r.Field<string>("queue").Equals("freeware")))
											   select r).Count();

					//scroll2bottom - for function getPercentage
					worksheet_product_split.Cells[row, col].Value = decimal.Parse(getPercentage(shareware_storage_made, shareware_storage_total).ToString());
					worksheet_product_split.Cells[row + 1, col].Value = decimal.Parse(getPercentage(shareware_sold_made, shareware_sold_total).ToString());
					worksheet_product_split.Cells[row + 2, col].Value = decimal.Parse(getPercentage(freeware_storage_made, freeware_storage_total).ToString());
					worksheet_product_split.Cells[row + 3, col].Value = decimal.Parse(getPercentage(freeware_sold_made, freeware_sold_total).ToString());

					// pull out month and year
					startdate = startdate.AddMonths(1);

					col += 1;			   
				}

				//draw first plain chart based on XLS cells
				var chartshareware = worksheet_product_split.Drawings.AddChart("chart_shareware", eChartType.LineMarkers);

				//storage -- 2nd param is the X-AXIS labels
				var series = chartshareware.Series.Add(new ExcelAddress(3, 4, 3, product_cells + 3).Address, new ExcelAddress(2, 4, 2, product_cells + 3).Address);

				//sold -- 2nd param is the X-AXIS labels
				var series2 = chartshareware.Series.Add(new ExcelAddress(4, 4, 4, product_cells + 3).Address, new ExcelAddress(2, 4, 2, product_cells + 3).Address);

				//set legends text
				chartshareware.Series[0].Header = "storage";
				chartshareware.Series[1].Header = "sold";

				//set position on sheet
				chartshareware.SetPosition(10, 0, 0, 0);

                //MOVE TO END
                package.Workbook.Worksheets.MoveToEnd("DATA");
                package.Workbook.Worksheets.MoveToEnd("STAT_PIE");

                //xls properties
                package.Workbook.Properties.Title = "Report " + dtp1.Value.ToString("dd-MMM-yyyy") + " - " + dtp2.Value.ToString("dd-MMM-yyyy");
                package.Workbook.Properties.Author = "costas";
                package.Workbook.Properties.Company = "PipisCrew";

				//save XLSX!
                package.Save();
            }
        }

        public static string getPercentage(decimal current, decimal total)
        {
            try
            {
                //http://stackoverflow.com/a/4561446
                //http://stackoverflow.com/a/9288913
                //string.Format("{0:N2}%", x);

                return string.Format("{0:N2}", ((current / total) * 100m));
                //return ((current / total) * 100m).ToString("{0:N2}%") ; //(int)Math.Round((double)(100 * complete) / total);
            }
            catch { return "0%"; }
        }

        public static int GetMonthsBetween(DateTime from, DateTime to)
        {
            if (from > to) return GetMonthsBetween(to, from);

            var monthDiff = Math.Abs((to.Year * 12 + (to.Month - 1)) - (from.Year * 12 + (from.Month - 1)));

            if (from.AddMonths(monthDiff) > to || to.Day < from.day)="" {="" return="" monthdiff="" -="" 1;="" }="" else="" {="" return="" monthdiff;="" }="" }="" ```="" xlsx="" snippet:="">![snap014S](https://www.pipiscrew.com/wp-content/uploads/2016/07/snap014S.jpg)

--

## Excel Graphs with EPPlus

```js
//source - http://danlb.blogspot.com/2014/06/excel-graphs-with-epplus.html
using (var package = new ExcelPackage())
{
var workbook = package.Workbook;
var worksheet = workbook.Worksheets.Add("Sheet1");

worksheet.Cells["C1"].Value = "Widgets";
worksheet.Cells["C2"].Value = 20;
worksheet.Cells["C3"].Value = 5;
worksheet.Cells["C4"].Value = 30;
worksheet.Cells["C5"].Value = 32;
worksheet.Cells["C6"].Value = 17;

worksheet.Cells["B2"].Value = "Jan";
worksheet.Cells["B3"].Value = "Feb";
worksheet.Cells["B4"].Value = "Mar";
worksheet.Cells["B5"].Value = "Apr";
worksheet.Cells["B6"].Value = "May";

var chart = worksheet.Drawings.AddChart("chart", eChartType.ColumnStacked);

//data series to our chart
var series = chart.Series.Add(C2:C6", "B2:B6"); 

//default name in the legend of the chart   
series.HeaderAddress = new ExcelAddress("'Sheet1'!C1");

//Since this is a stacked column chart we can add more than one series. 
var series2 = chart.Series.Add("D2:D6", "B2:B6");               
series2.HeaderAddress = new ExcelAddress("'Sheet1'!D1");

//save!
package.SaveAs(new System.IO.FileInfo(@"c:\temp\demoOut.xls

Select used worksheet dimension : ```js //first way line95 on example1^

//second way worksheet.Cells[“F2:” + “F:” + worksheet.Dimension.Rows].Style.Numberformat.Format = “0.00”; ```</string></string></string></datetime></datetime></string></string></string></datetime></datetime></string></string></string></datetime></datetime></string></string></string></datetime></datetime></string></string></datetime></datetime></string></string></datetime></datetime></string></string></datetime></datetime></string></string></datetime></datetime></string>

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