exceldatareader

a batch file, once executed. The reason why this is so much more efficient is not how high the blogger's programming level is, but the addition of an open source project: Https://github.com/ExcelDataReader/ExcelDataReader This library does not use Office components, Instead of reading the file directly, parsing its contents, bypassing the complex component mechanism, the data conversion process, so quick

The connection string of Excel2007 is different from that of Excel2003. DataTable tbSheetName = connection. GetOleDbSchemaTable (OleDbSchemaGuid. Tables, null );Used to obtain the sheet name. using System;using System.IO;using System.Collections.Generic;using System.Linq;using System.Text;using System.Data;using System.Data.OleDb; namespace ExcelDataReader{ public class ExcelDataReader { privat

Tags: base recommended RAC str support download ase var bleHttps://support.microsoft.com/zh-cn/help/189897/data-truncated-to-255-characters-with-excel-odbc-driver The microsoft.ace.oledb.12.0 driver reads Excel and reads the first 8 rows to determine the data type of each column, and if there are no more than 255 characters, it will be set to nvarchar (255), starting with line 9th, and more than 255 characters will be automatically truncated! Recommended use of third-party libraries: Https://git

mono, and at first I didn't notice I was using net under MonoDevelop The framework compilation runs successfully, and it is always problematic to run under mono after packaging, and the error message is always empty, wasting a lot of time.3 Select Mono under MonoDevelop, run failed after compiling successfully, report Libgda error, explain the cause of the problem the OLE DB under Mono should be encapsulated Libgda, and Mono DB supports SQL Server,oralcle, Mysql,sqllite, Excel is not supported,

Recently deployed to the Linux platform at the adjusting supervised ASP, the online search in the document import operation enabled the Exceldatareader build to support cross-platform. Test the build with NuGet installation on your local Windows, which relies on sharpziplib. NET under dingding well-known decompression build, should be used to extract Excel documents. Local test not read normal no problem, but publish to Linux run always can't read, re

When you plan to fill out an Excel table, the conventions are filled in JSON format for complex types of data. For example, the content of column D is JSON data.The JSON in the cell is as follows.{ "name":"BeJson2", "URL":"http://www.bejson.com", "page": the, "Isnonprofit":true, "Address": { "Street":"Science Park Road.", " City":"Suzhou, Jiangsu", "Country":"China" }, "links": [{ "name":"Google", "URL":"http://www.google.com" }, {

(0 ); } // 6. free resources (iexceldatareader is idisposable) Excelreader. Close (); VB. NET code: Dim stream as filestream = File. Open (filepath, filemode. Open, fileaccess. Read) ' 1. reading from a binary Excel file ( ' 97 - 2003 Format ;* . Xls) dim excelreader as iexceldatareader = Excelreaderfactory. createbinaryreader (Stream) ' ... ' 2. reading from a openxml Excel file (2007 format; *. XLSX) Dim excelreader as iexceldatareader = Excelreaderfactory. createopenxmlreader (Str

ObjectiveI believe that friends who have done information systems will encounter Excel import and export related development, did a lot of Excel import and export after summing up roughly there are several ways to achieve: Ado. NET OLDDB or ODBC connection Excel uses a DataTable to read data. Microsoft.Office.Interop.Excel operates worksheet objects with components provided by Microsoft. Use some third-party libraries such as Fast Excel, Exc