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05.26.2008 at 02:31AM PDT, ID: 23432325
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7.9

Import excel file and force format columns

Asked by mark_norge in Visual Basic Programming

Tags:

Hi Experts,
I import an Excel file to a data table. The import works, however I am missing data from some columns. It seems that these columns have in common that they have numeric and alphanumeric data (all the alphanumeric data is missing). One column in the Excel sheet is for instance:
Size (header)
300
350
45/50 (this one is missing)
300

It looks like Visual Basic by default recognized the header and uses the second value to determine the data type.

Is there a way to force the data format for each column (integers, strings and dates) and to specify if the first row contains headers? Attached the code I use to import the Excel file.

Help is as always appreciated.
Regards, MBStart Free Trial 
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Dim ImportBookingDS As DataSet
        Try
            Dim strConn As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & "Data Source=" & ImportDir & ImportBookingFile & ";" & "Extended Properties=Excel 8.0;"
 
            Dim objConn As New OleDbConnection(strConn)
            objConn.Open()
 
            Dim objCmd As New OleDbCommand("SELECT * FROM [Sheet1$]", objConn)
 
            Dim objDA As New OleDbDataAdapter()
            objDA.SelectCommand = objCmd
 
            ImportBookingDS = New DataSet()
            objDA.Fill(ImportBookingDS, "ImportBookings")
 
            objConn.Close()
        Catch ex As Exception
            MsgBox("The following error occured " & ex.Message, MsgBoxStyle.Exclamation) 'Possible errors include Excel file already open, locked, etc
        End Try
 
        Me.DataGridView8.DataSource = ImportBookingDS.Tables("ImportBookings")
[+][-]05.27.2008 at 06:02AM PDT, ID: 21651469

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[+][-]05.31.2008 at 11:31AM PDT, ID: 21684618

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[+][-]06.01.2008 at 04:27AM PDT, ID: 21686619

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[+][-]06.02.2008 at 01:02PM PDT, ID: 21695162

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About this solution

Zone: Visual Basic Programming
Tags: visual basic .net
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Solution Provided By: LIONKING
Participating Experts: 2
Solution Grade: A
 
 
 
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