但是我收到以下错误：

The Microsoft Jet database engine could not find the object ‘Sheet1$’.
Make sure the object exists and that you spell its name and the path
name correctly.

这是我正在使用的代码片段：

Dim dt As DataTable = New DataTable()
Select Case fileExt
    Case ".csv"
        Dim reader As New CsvReader
        dt = reader.GetDataTable(filePath)
    Case ".xls",".xlsx"

        Dim oleDbConnStr As String
        Select Case fileExt
            Case ".xls"
                oleDbConnStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & filePath & ";Extended Properties=""Excel 8.0;HDR=Yes;IMEX=2"""
            Case ".xlsx"
                oleDbConnStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & filePath & ";Extended Properties=""Excel 12.0;HDR=Yes;IMEX=2"""
        End Select



        Using oleDbConn As OleDbConnection = New OleDbConnection(oleDbConnStr)
            oleDbConn.Open()

            Dim oleDbCmd As New OleDbCommand("SELECT * FROM [Sheet1$]",oleDbConn)
            Dim oleDbDa As New OleDbDataAdapter(oleDbCmd)
            oleDbDa.Fill(dt)

            oleDbConn.Close()
        End Using



End Select

我无法理解为什么代码找不到我的工作表.为什么会这样,我该如何解决？