Excel file with openxml with multiple sheets in single workbook

Question

I am trying to insert data to multiple sheets. For my excel, I have two sheets which are "charts" and "ChartData". I'm able to update the data in sheet2, chartdata sheet, but I'm unable to insert data to sheet1. Here is code which I have tried to insert data into excel sheets. Here data is coming from database.

           double ticks = DateTime.Now.Ticks;
         // MarketAnalysis ms = new MarketAnalysis();
         //ms.Marketanalysis();

        File.Copy(Srcpath, @"E:\Works\OpenXML\DownloadTemplates\ExcelGenerated" + ticks + ".xlsx", true);
         using (SpreadsheetDocument myworkbok = SpreadsheetDocument.Open(@"E:\Works\OpenXML\DownloadTemplates\ExcelGenerated" + ticks + ".xlsx", true))
         {
             //Acess the main workbook which contain all the references

            WorkbookPart workbookpart = myworkbok.WorkbookPart;
             //Get sheet by name
             Sheet sheet = workbookpart.Workbook.Descendants<Sheet>().Where(s => s.Name == "ChartData").FirstOrDefault();

            //Worksheet Part by ID
             WorksheetPart worksheetpart = workbookpart.GetPartById(sheet.Id) as WorksheetPart;

            //Sheet data contains all the data
             SheetData sheetdata = worksheetpart.Worksheet.GetFirstChild<SheetData>();
             DataSet ds = db.Chart1Data();

              for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
             {
                 //  if (ds.Tables[0].Rows !=DBNull)
                 //{

                string Rowlabel = ds.Tables[0].Rows[i][0].ToString();
                 // float? FY13Actuval = Convert.ToInt32(ds.Tables[0].Rows[i][1]);

                if (!string.IsNullOrEmpty(ds.Tables[0].Rows[i][1].ToString()))
                 {
                     // string s = ds.Tables[0].Rows[i][1].ToString();
                     //FY13Actuval=float.Parse(ds.Tables[0].Rows[i][1].ToString());

                    FY13Actuval = Convert.ToDouble(ds.Tables[0].Rows[i][1].ToString());
                 }
                 else
                 {

                    FY13Actuval = null;
                 }

                double? Budget = Convert.ToDouble(ds.Tables[0].Rows[i][2].ToString());
                 double? Actuval = Convert.ToDouble(ds.Tables[0].Rows[i][3].ToString());
                 Row contentrow = CreateContentRow(index, Product, Actual, Budget, Forecast);

                index++;
                 sheetdata.AppendChild(contentrow);

                // }
             }
 .......Same code for the other 3 charts
 Sheet sheet1 = workbookpart.Workbook.Descendants<Sheet>().Where(s => s.Name == "Charts").FirstOrDefault();

            WorksheetPart worksheetpart1 = workbookpart.GetPartById(sheet1.Id) as WorksheetPart;

            //Sheet data contains all the data
             SheetData sheetdata1 = worksheetpart1.Worksheet.GetFirstChild<SheetData>();

            DataSet dsTbl = db.Table();
             int SCMTblIndex=5;
             for (int i = 0; i < dsTbl.Tables[0].Rows.Count; i++)
             {
                 Row tblRow = CreateScorecardMetricTblRow(SCMTblIndex, dsTbl.Tables[0].Rows[i][0].ToString(),
                                                                    dsTbl.Tables[0].Rows[i][1].ToString(),
                                                                    dsTbl.Tables[0].Rows[i][2].ToString());
                 SCMTblIndex++;
                 sheetdata1.AppendChild(tblRow);
             }

                myworkbok.WorkbookPart.Workbook.Save();
         }

and the Methods to create the cells:

public static string[] headerColumns = new string[]{ "A", "B", "C", "D", "E", "F", "G", "I", "J" };
public static string[] header = new string[] { "D", "E", "F" };

private static Row CreateContentRow(int index, string Product, double? Actual, double? Budget, double? Forecast)
     {

        //Create New ROw
         Row r = new Row();
         r.RowIndex = (UInt32)index;


        //Begin colums
         Cell c0 = new Cell();
         c0.CellReference = headerColumns[0] + index;
         CellValue v0 = new CellValue();
         v0.Text = Product;
         c0.AppendChild(v0);
         r.AppendChild(c0);

        Cell c1 = new Cell();
         c1.CellReference = headerColumns[1] + index;
         CellValue v1 = new CellValue();
         v1.Text = Actual.ToString();
         c1.AppendChild(v1);
         r.AppendChild(c1);

        Cell c2 = new Cell();
         c2.CellReference = headerColumns[2] + index;
         CellValue v2 = new CellValue();
         v2.Text = Budget.ToString();
         c2.AppendChild(v2);
         r.AppendChild(c2);

        Cell c3 = new Cell();
         c3.CellReference = headerColumns[3] + index;
         CellValue v3 = new CellValue();
         v3.Text = Forecast.ToString();
         c3.AppendChild(v3);
         r.AppendChild(c3);


        return r;


    }
public static Row CreateScorecardMetricTblRow(int index, string Act_Data, string Bud_Data, string VarPr_Data)
     {
         Row r = new Row();
         r.RowIndex = (UInt32)index;
         //Begin Colums

        Cell c0 = new Cell();
         c0.CellReference = header[0] + index;
         CellValue v0 = new CellValue();
         v0.Text = Act_Data;
         c0.AppendChild(v0);
         r.AppendChild(c0);

        Cell c1 = new Cell();
         c1.CellReference = header[1] + index;
         CellValue v1 = new CellValue();
         v1.Text = Bud_Data;
         c1.AppendChild(v1);
         r.AppendChild(c1);

        Cell c2 = new Cell();
         c2.CellReference = header[2] + index;
         CellValue v2 = new CellValue();
         v2.Text = VarPr_Data;
         c2.AppendChild(v2);
         r.AppendChild(c2);
          return r;
     }

Answer 1

for multiple sheets to updated just

// Open the document for editing.
using (SpreadsheetDocument spreadSheet = SpreadsheetDocument.Open(docName, true)) 
{

   // Insert code here.

}

create a two classes for two sheets which you need to update sheet cell values.For each class constructor pass the SpreadsheetDocument object and implement insert text into a cell in a spreadsheet document.Just avoid the code for insertion of new sheet and try the insertion of the cell code only.