NPOI is a great solution for working with XLS documents, but what happens when you need to read in XLSX documents as part of your solution The easiest solution I. Syncfusion Essential XlsIO is very fast and works well for creating Excel workbooks in both server and workstation environments. Mathew Weaver EarthSoft, Inc. Heres an example that shows how to Export data to an Excel file all excel versions using Asp. Net C and VB. Net and Microsoft. Office. Interop. Spire. XLS for. NETC,VB. NET,ASP. NET is an industryleading, standalone Excel component for developers to read, write, format and convert all versions of Excel files. How to read in XLSX data for editing with NPOI Zach Hunters Busy Life. NPOI is a great solution for working with XLS documents, but what happens when you need to read in XLSX documents as part of your solution The easiest solution I could think of was to use OLEDB to extract out all the data the data, the whole data and nothing but the data from a worksheet into a new NPOI document. I want to extract some data like email addresses. PDF file and use this email addresses which I extract to send email to those people. HTML to PDF Converter Excel Library ASP. NET Charts RTF to PDF Converter PDF Merge and Split PDF Security PDF Viewers PDF to Text. If you need more support than just reading in data from Excel 2. XLSX, you should look at using the Excel. Package project that is hosted at Code. Plex. The benefit to my approach, is that your able to use your existing NPOI solutions when data is provided in XLSX format. This is far from full Excel 2. NPOI v. 1. 6 is supposed to fully support the XLSX format, until then this function will provide basic XLSX support. Functions used to convert XLSX document to a NPOI document. Render a Excel 2. Worksheet to NPOI Excel 2. Worksheet, all excel formatting. XLSX will be lost when converted. NPOI roadmap shows v. Excel 2. 00. 7 xlsx. NPOI Roadmap http npoi. NPOI2. 0Road2. 0Map referring. TitleDocumentation. NPOI Homepage http npoi. File. Stream XLSX File. Streamlt param. Name Excel worksheet to convertlt param. Memory. Stream containing NPOI Excel workbooklt returns. Stream Convert. XLSXWorksheet. To. XLSWorksheetStream excel. File. Stream, string sheet. Name. Temp file name. File Http. Context. C# Save Excel Worksheet As Pdf' title='C# Save Excel Worksheet As Pdf' />Current. Server. Map. Pathuploads Http. Context. Current. Session. LCID. Temp data container using Data. Bitcoin. La bolla dei bitcoin ed il sonno dei regulatorsBitcoin da 10 a 11mila dollari in poche ore. Poi cala a 9500. bollaTable to leverage existing Render. Data. Table. To. Excel function. Data. Table dt new Data. Table. Create temp XLSX file. File. Stream file. Stream new File. Streamtemp. File, File. Mode. Create, File. Access. Write. const int length 2. Byte buffer new Bytelength. Read excel. File. Stream. Readbuffer, 0, length. Read 0. file. Stream. Writebuffer, 0, bytes. Read. bytes. Read excel. File. Stream. Readbuffer, 0, length. File. Stream. Close. Stream. Close. Read temp XLSX file using OLEDB. Tested on Vista Windows 2. R2. using Ole. Db. Connection con new Ole. Db. ConnectionProviderMicrosoft. ACE. OLEDB. 1. 2. Extended PropertiesExcel 1. Data Source temp. File Extended PropertiesExcel 1. Open. string sql String. FormatSELECT FROM 0, sheet. Name. Ole. Db. Data. Adapter da new Ole. Db. Data. Adaptersql, con. Filldt. finally. Make sure temp file is deleted. File. Deletetemp. File. Return a new POI Excel 2. Workbook. return Render. Data. Table. To. Exceldt. Render Data. Table to NPOI Excel 2. Memory. Stream. NOTE Limitation of 6. XLS. lt summary. Table Source Data. Tablelt param. Memory. Stream containing NPOI Excel workbooklt returns. Stream Render. Data. Table. To. ExcelData. Table source. Table. HSSFWorkbook workbook new HSSFWorkbook. Memory. Stream memory. Stream new Memory. Stream. By default NPOI creates Sheet. Excel using Sheet. HSSFSheet sheet workbook. Create. SheetSheet. HSSFRow header. Row sheet. Create. Row0. Header Row. Data. Column column in source. Table. Columns. header. Row. Create. Cellcolumn. Ordinal. Set. Cell. Valuecolumn. Column. Name. Detail Rows. Index 1. foreach Data. Row row in source. Table. Rows. HSSFRow data. Row sheet. Create. Rowrow. Index. foreach Data. Column column in source. Table. Columns. data. Row. Create. Cellcolumn. Ordinal. Set. Cell. Valuerowcolumn. To. String. row. Index. Writememory. Stream. Stream. Flush. memory. Stream. Position 0. Stream. NOTE You could convert an entire workbook multiple work sheets into a new NPOI workbook if you looped over each work sheet in the XLSX document. C# Save Excel Worksheet As Pdf' title='C# Save Excel Worksheet As Pdf' />Since all my tools are based on using a single work sheet, Ill leave the workbook conversion up to you. Example using XLSX function. File. Upload. Posted. File. Content. Length 0. Stream upload. File. Stream File. Upload. Posted. File. Input. Stream. If the file uploaded is XLSX, convert its Sheet. NPOI document. if File. Upload. Posted. File. File. Name. Ends. Withxlsx. File. Stream Excel. Helper. Convert. XLSXWorksheet. Instal Office 2007 Di Windows 7 Gagal. To. XLSWorksheetupload. File. Stream, Sheet. All your NPOI logic that adds columns, changes cellrow formatting, etc will now work with the data extracted from the XLSX document. This entry was posted on May 1. C Development. You can follow any responses to this entry through RSS 2. 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