Reads the contents of an Excel file on the Web

Click the event code. CS

    protected voidButton1_Click (Objectsender, EventArgs e) {        stringstrpath ="D:/test.xls"; stringMyString ="provider=microsoft.ace.oledb.12.0;data Source = '"+ strpath +"'; Extended properties= ' Excel 8.0; hdr=yes;imex=1; '"; //"Provider = microsoft.jet.oledb.4.0; Data Source = ' "+ strpath +"; Extended properties=excel 8.0 ";OleDbConnection Cnnxls =NewOleDbConnection (mystring); OleDbDataAdapter Myda=NewOleDbDataAdapter ("select * FROM [sheet1$]", Cnnxls); DataSet MyDs=NewDataSet ();        Myda.fill (MyDs); DataGrid1.DataSource= myds.tables[0];     Datagrid1.databind (); }

If you use the classic "Provider = microsoft.jet.oledb.4.0; Data Source = ' "+ strpath +"; Extended Properties=excel 8.0 "Error: external table is not the expected format

This is because: Microsoft.Jet.OLEDB.4.0 is the Microsoft Jet engine, which applies to version 2003 (I didn't pretend before 2003, so I don't know which version to fit down), and in 2007, Microsoft has access to Excel The primary file format is modified and renamed as. ACCDB (Access 2007 database files) and. xlsx (Excel 2007 files), so it is not supported by the Microsoft Jet engine, but Microsoft also quickly presents Microsoft Office 2 007 Desktop Drivers:data Connectivity components to support.

The workaround is to change the data provider in the connection string to microsoft.ace.oledb.12.0