使用 OLE 驱动程序打开 excel 文件时找不到可安装的 ISAM

Question

我在使用 Visual Basic 的 asp.net 网络表单中收到“无法找到可安装的 ISAM”错误。我正在使用 .Net 4.6 框架。我尝试了不同的连接字符串组合，我也尝试在扩展属性上使用单引号作为许多在线解决方案的建议，但错误并没有消失。我的代码如下：

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Dim conn As OleDbConnection
        Dim dta As OleDbDataAdapter
        Dim dts As DataSet
        Dim excel As String
        excel = "C:\Users\ishfaq.babar\Downloads\aaa.xlsx"
        'Dim openfiledialog As New OpenFileDialog
        'conn = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + excel + ";Extended Properties='Excel 12.0;'";")

        conn = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Users\ishfaq.babar\Downloads\aaa.xlsx;Extended Properties='Excel 12.0;HDR=YES;Persist Security Info=False'")
        dta = New OleDbDataAdapter("select * from [Sheet1$]", conn)
        dts = New DataSet
        dta.Fill(dts, "[Sheet1$]")
        ExcelGridData.DataSource = dta
        ExcelGridData.DataBind()
    End Sub

我在线上遇到错误

dta.Fill(dts, "[Sheet1$]")

此外，我已经安装了 ole 驱动程序 x64 和 X86 的两个版本，并且我已经通过 命令行 安装了 ole 驱动程序：

accessdatabaseengine /quiet

accessdatabaseengine_X64 /quiet

因为我从 GUI Installer 收到错误消息：

microsoft.ace.oledb.12.0' provider is not registered on the local machine

驱动安装截图如下：

OLE Drivers.Installed Access database Engine versions

Answer 1

错误已自动解决，根本没有更改代码。休息后再次登录我的帐户后，它运行成功：

编辑：

我把conn.Open()放在连接字符串后面。

新代码如下：

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Dim conn As OleDbConnection
        Try

            Dim dta As OleDbDataAdapter
            Dim dts As DataSet
            Dim excel As String
            excel = "C:\Users\ishfaq.babar\Downloads\aaa.xlsx"
            'Dim openfiledialog As New OpenFileDialog
            'conn = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + excel + ";Extended Properties='Excel 12.0;'";")

            conn = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Users\ishfaq.babar\Downloads\aaa.xlsx;Extended Properties='Excel 12.0;HDR=YES;Persist Security Info=False'")
            conn.Open()
            'PrintLine('ok')
            ' conn.Close()
            dta = New OleDbDataAdapter("select * from [Sheet1$]", conn)
            dts = New DataSet
            dta.Fill(dts, "[Sheet1$]")
            ExcelGridData.DataSource = dta
            ExcelGridData.DataBind()
        Catch ex As Exception
            conn.Close()
        End Try
    End Sub

成功从 excel 文件中读取数据，如下图所示：

Result of data read from excel file

使用 OLE 驱动程序打开 excel 文件时找不到可安装的 ISAM

Could not find installable ISAM while opening excel file with OLE driver

webforms

oledb

oledbconnection