[RESOLVED] Error - Could not find installable ISAM.

[dlscott56]

I'm receiving the error - Could not find installable ISAM. at the line MyCommand.Fill(DT) in the following code.

What is confusing to me is that I downloaded a sample project for reading data from an Excel workbook in the same way, written in C# that runs fine.

    Private Sub exceldata()
        Dim filename As String = "C:\Documents and Settings\Dave\My Documents\Programming\Book1.xlsx"

        Dim MyCommand As OleDb.OleDbDataAdapter
        Using MyConnection As New OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;" &
                                                             "Data Source=" & filename & ";" &
                                                             "Extended Properties=Excel 12.0 Xml;" &
                                                             "HDR=No;" &
                                                             "IMEX=1")
            MyCommand = New OleDb.OleDbDataAdapter("select * from [Sheet1$]", MyConnection)

            Dim DT As New Data.DataTable
            MyCommand.Fill(DT)
            DataGridView1.DataSource = DT
        End Using
    End Sub
    Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

    End Sub

[Pradeep1210]

Install the latest version of MDAC setup and see if the problem goes away.

[dlscott56]

I've got MDAC v2.81.1132.0 which I thought was the latest version. Also, is OleDB the usual way to read data from Excel?

[si_the_geek]

While that error is supposed to mean that the driver/provider isn't installed, it usually means is that something is wrong with your connection string. Check www.connectionstrings.com to see valid examples, you just need to change file names etc.

Also, is OleDB the usual way to read data from Excel?

It is one of the usual ways... the other is to automate Excel (as shown in the Office Development FAQs), but that requires Excel to be installed.

[Hack]

Some links that might be useful

http://support.microsoft.com/kb/q155666/

http://support.microsoft.com/default...&Product=acc97

[dlscott56]

While that error is supposed to mean that the driver/provider isn't installed, it usually means is that something is wrong with your connection string. Check www.connectionstrings.com to see valid examples, you just need to change file names etc.

It is one of the usual ways... the other is to automate Excel (as shown in the Office Development FAQs), but that requires Excel to be installed.

Thank you. It was my connection string. The error led me off track in finding the trouble.

I appreciate your help.

[si_the_geek]

No problem.

As you now have it sorted out, could you please do us a little favour, and mark the thread as Resolved?
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