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1. #SPREADSHEET CONVERTER MORE THAN 4000 CELLS INSTALL#
2. #SPREADSHEET CONVERTER MORE THAN 4000 CELLS CODE#
3. #SPREADSHEET CONVERTER MORE THAN 4000 CELLS FREE#

var headerRow = new Row() įoreach (DataColumn column in ResultsData.Columns) Append a new worksheet and associate it with the workbook. WorksheetPart.Worksheet = new Worksheet(sheetData)

var worksheetPart = workbookpart.AddNewPart() Add a WorksheetPart to the WorkbookPart. WorkbookPart workbookpart = spreadsheetDocument.AddWorkbookPart() SpreadsheetDocument spreadsheetDocument = SpreadsheetDocument.Ĭreate(fileName, SpreadsheetDocumentType.Workbook) By default, AutoSave = true, Editable = true, and Type = xlsx. Create a spreadsheet document by supplying the filepath. This is the first time of creating the excel file and the first sheet. Uint sheetId = 1 // Start at the first sheet in the Excel workbook. Private static void ExportToOxml( bool firstTime)Ĭonst string fileName = C:\MyExcel.xlsx" Var column = new DataColumn(columnName, (Type)(drow)) Ĭolumn.Unique = ( bool)drow Ĭolumn.AllowDBNull = ( bool)drow Ĭolumn.AutoIncrement = ( bool)drow String columnName = Convert.ToString(drow) Get the Columns names, types, this will help // when we need to format the cells in the excel sheet.ĭataTable dtSchema = reader.GetSchemaTable() SqlDataReader reader = command.ExecuteReader() Var command = new SqlCommand(queryString, connection) New SqlConnection( Data Source=localhost\SQL2008 " Initial Catalog=Northwind Integrated Security=SSPI")) Static private DataTable ResultsData= new DataTable() Ĭonst string queryString = " SELECT OrderID, CustomerID FROM dbo.Orders " if you are going to export more than Excel file at the same time (as in web sites/services), then choose smaller value of rowsPerSheet. For example, I use 150000 value when I exported 700000 rows. Please use the variable rowsPerSheet to control the number of rows per sheet that you want to produce. Then reopen the same Excel file again (without loading its data in memory), and add the next group of data in a new sheet, save it to the disk,Īnd the process continues until all the data we have are written to the Excel file.

#SPREADSHEET CONVERTER MORE THAN 4000 CELLS FREE#

I write the whole Excel object to the disk after adding each sheet to it and free the memory of the sheet data, You will find out that I solved this problem by dividing the data that is coming from the database into groups of rows (it is configurable), and each group willīe written to an individual sheet in the Excel workbook. Increase until it raises the OutOfMemoryException exception. Your application's consumed memory will start to increase and The cause of the problem is we create the object that represents the Excel file in memory and we start to add cellĭata to it. If you look at the Program class, you will find a method called ExportToOxml which is responsible for the creation of the Excel file. I developed this console application using Visual Studio 2012. Please note that the WindowsBase assembly version 4.0 comes with. You need also to reference the WindowsBase assembly version 3.0 or 4.0 in this project ( WindowsBase.dll).

#SPREADSHEET CONVERTER MORE THAN 4000 CELLS INSTALL#

To be able to run this code, you need to install the OpenXML SDK 2.0 from Download Center. You don't have to install Microsoft Office to create an Excel file with the OpenXML SDK. I used here the Northwind database, but you can use your own database. It defines the document structure and the elements for Office documents like. OpenXML is a standard and an open format for Office files. We got stuck at OutofMemoryException exception.

Using any common third party library such We faced this problem (and still are) when we tried to export data from a database and the data size

#SPREADSHEET CONVERTER MORE THAN 4000 CELLS CODE#

This code solves the popular problem when creating a large Excel file with massive amounts of rows.