无法在IIS上读取excel文件

Question

我想在我的asp.net网站上阅读Excel表格.文件由用户上传,然后我阅读它并在网格视图中显示结果.当我在Visual Studio环境中运行它时,每件事都可以正常工作.但是当我在IIS上尝试相同的代码时,它给出了一个例外Unspecified Error.我使用以下代码:

string excelConnection = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source="+Server.MapPath("~/doc/")+ filepath+";Extended Properties="+ "\"" + "Excel 12.0;HDR=YES;" + "\"";
        string query = "select * from [Sheet1$]";
        OleDbConnection con = new OleDbConnection(connection);
        con.Open();               // Exceptionoccurs here
        OleDbCommand cmd = new OleDbCommand(query, con);
        cmd.CommandType = CommandType.Text;
        OleDbDataReader dr = cmd.ExecuteReader();
        DataTable dt = new DataTable();
        dt.Load(dr);
        testGrid.DataSource = dt;
        testGrid.DataBind();

异常堆栈跟踪:

[OleDbException (0x80004005): Unspecified error]
   System.Data.OleDb.OleDbConnectionInternal..ctor(OleDbConnectionString constr, OleDbConnection connection) +351
   System.Data.OleDb.OleDbConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) +86
   System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup) +31
   System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +76
   System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +126
   System.Data.OleDb.OleDbConnection.Open() +43
   DataBaseSolution.DbSolution.select(String connection, String providername, String query) in F:\vs backup\DataBaseSolution\DataBaseSolution\DbSolution.cs:63
   _Default.insertDb(String filepath) in c:\inetpub\wwwroot\test\Default.aspx.cs:82
   _Default.checkButton_Click(Object sender, EventArgs e) in c:\inetpub\wwwroot\test\Default.aspx.cs:39
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +118
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +112
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563

请告诉我代码中的任何更新或我可以执行此任务的任何其他方法.

编辑:提供堆栈跟踪和带有注释的标记行,其中发生异常

Answer 1

检查权限 - >安全性或检查应用程序池 - >高级设置 - >启用32应用程序 - >真