zoukankan      html  css  js  c++  java
  • How To Connect to Excel

    Excel  
    This is a compiled connection strings reference list on how to connect to Excel.


    ODBC

     
    Standard
       
     
    Driver={Microsoft Excel Driver (*.xls)};DriverId=790;Dbq=C:\MyExcel.xls;DefaultDir=c:\mypath;
    SQL syntax "SELECT * FROM [sheet1$]". I.e. excel worksheet name followed by a "$" and wrapped in "[" "]" brackets.

     

    OLE DB
     
    Standard
       
    Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\MyExcel.xls;Extended Properties="Excel 8.0;HDR=Yes;IMEX=1"
    Important note!
    The quota " in the string needs to be escaped using your language specific escape syntax.
    c#, c++   \"
    VB6, VBScript   ""
    xml (web.config etc)   "
    or maybe use a single quota '.
    "HDR=Yes;" indicates that the first row contains columnnames, not data. "HDR=No;" indicates the opposite.
    "IMEX=1;" tells the driver to always read "intermixed" (numbers, dates, strings etc) data columns as text. Note that this option might affect excel sheet write access negative.
    SQL syntax "SELECT * FROM [sheet1$]". I.e. excel worksheet name followed by a "$" and wrapped in "[" "]" brackets.
    Check out the [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Jet\4.0\Engines\Excel] located registry REG_DWORD "TypeGuessRows". That's the key to not letting Excel use only the first 8 rows to guess the columns data type. Set this value to 0 to scan all rows. This might hurt performance.
    If the Excel workbook is protected by a password, you cannot open it for data access, even by supplying the correct password with your connection string. If you try, you receive the following error message: "Could not decrypt file."



    Sarah Ding Note:

    "IMEX=1;" tells the driver to always read "intermixed" data columns as text 
  • 相关阅读:
    WCF 限流 Throttling
    VS2010安装了Hide Main Menu 插件
    ASP.NET MVC基于标注特性的Model验证:将ValidationAttribute应用到参数上
    UML面向对象分析设计
    我的WCF开发框架简化版及基于NET.TCP传输方式的实现
    一周最新示例代码回顾 (6/4–6/10)
    Windows Azure 上的托管服务CDN (下) Hosted Service
    计算机考研的调查和改进建议
    并发编程中的重重量级模型和轻量级模型
    JIRA_5_和GreenHopper5.9破解及汉化
  • 原文地址:https://www.cnblogs.com/amadeuslee/p/3744566.html
Copyright © 2011-2022 走看看