为什么excel文件无法使用此代码打开？发生错误

Question

    ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;   Data Source='" + fileName + "';  Extended Properties=Excel 5.0"        

    Dim ExcelConnection As System.Data.OleDb.OleDbConnection
    ExcelConnection = New System.Data.OleDb.OleDbConnection(ConnectionString)

    ExcelQuery = "Select * from [Sheet2$]"
    Dim ExcelCommand As New System.Data.OleDb.OleDbCommand(ExcelQuery, ExcelConnection)
    ExcelConnection.Open()

    Dim ExcelReader As System.Data.OleDb.OleDbDataReader
    ExcelReader = ExcelCommand.ExecuteReader()

    While (ExcelReader.Read)


    End While
    ExcelConnection.Close()
    ExcelReader.Close()

行上发生错误

         ExcelConnection.Open()
       External table is not in the expected format.

请帮忙 谢谢

Answer 1

使用

public static string connStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileName + ";Extended Properties=Excel 12.0;";

作为您的连接字符串。在此处查找更多信息：Excel "External table is not in the expected format."。