如何使用C＃在ASP.NET中打开Excel文件

我有一个Excel文件，我需要打开并search它。 这是我使用的代码：

public partial class _Default : System.Web.UI.Page { string connStr; string absoluteDir; string relativeDir; protected void Page_Load(object sender, EventArgs e) { relativeDir = "~/data" + System.IO.Path.DirectorySeparatorChar + "zadacaEXCEL.xlsx"; absoluteDir = Server.MapPath( relativeDir ); Label1.Text = absoluteDir + " "; connStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + absoluteDir + ";Extended Properties=\"Excel 8.0;HDR=Yes\""; //string connString = ConfigurationManager.ConnectionStrings["xls"].ConnectionString; // Create the connection object OleDbConnection oledbConn = new OleDbConnection(connStr); try { // Open connection oledbConn.Open(); // Create OleDbCommand object and select data from worksheet Sheet1 OleDbCommand cmd = new OleDbCommand("SELECT * FROM [Sheet1$]", oledbConn); // Create new OleDbDataAdapter OleDbDataAdapter oleda = new OleDbDataAdapter(); oleda.SelectCommand = cmd; // Create a DataSet which will hold the data extracted from the worksheet. DataSet ds = new DataSet(); // Fill the DataSet from the data extracted from the worksheet. oleda.Fill(ds); // Bind the data to the GridView GridView1.DataSource = ds.Tables[0].DefaultView; GridView1.DataBind(); } catch(Exception err) { Label1.Text += err.ToString(); } finally { // Close connection oledbConn.Close(); } } 

这是我得到的错误：

 System.Data.OleDb.OleDbException: External table is not in the expected format. at System.Data.OleDb.OleDbConnectionInternal..ctor(OleDbConnectionString constr, OleDbConnection connection) at System.Data.OleDb.OleDbConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) at System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup) at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) at System.Data.OleDb.OleDbConnection.Open() at _Default.Page_Load(Object sender, EventArgs e) in c:\Users\ACO\Documents\Visual Studio 2008\WebSites\za_rabota\Default.aspx.cs:line 33 

错误发生在oledbConn.Open（）;

有人可以告诉我，我在这里做错了什么。 excel文件位于解决scheme中名为data的文件夹中

Answer 1

您的提供程序types和string对于Excel 2007和更高版本的文件（以.xslx结尾）不正确。 您需要使用OLEDB 12.0连接string 。

就像是：

 connStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + absoluteDir + ";Extended Properties="Excel 12.0 Xml;HDR=YES";