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Excel-.NEt

Hello,

I want to develop a little application, which extracts some values of an
excel sheet and displays this values with a rectangle or a circle in a form.
Are there any example how to implement such things?

regards

mathon
Jul 21 '05 #1
2 1370

Is it not possible to extract values from an excel sheet to display for
example in a DataGrid?? :(

regards

mathonhon
Jul 21 '05 #2
Excel is an ISAM just like dBase and Jet (Acceess). You can get at the data
using Excel automation or, if you don;'t have the full Excel installed but
have the Jet ISAM drivers on your user machine then you can open the sheets
just like opening a Jet file by using the OLEDB provider. There are some
limitations but getting the data for grid display (or INSERTs or UPDATES) is
pretty straight forward using Jet-SQL syntax and the special bracket syntax
as shown below for the Excel objects

The following shows very general proof of concept code, this opens the
connection and confirms that it is reading the data. Just use regular
ado.net to iterate.

The HDR=Yes in the connection string tells the provider that the first row
of the sheet has values that are used as "Column Names", if your sheet
doesn't have that then don't say Yes :)

Imports System.Data.Oledb
......

Dim cn As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; " & _
"Data Source=C:\mytests\book1.xls;" & _
"Extended Properties=""Excel 8.0;HDR=Yes""")

Dim ds As New DataSet
Dim da As New OleDbDataAdapter("Select * from [Sheet1$]", cn)
cn.Open()
Try
da.Fill(ds)
MsgBox(ds.Tables.Count)
MsgBox(ds.Tables(0).Rows.Count)

grid1.DataSource = ds.Tables(0)

Catch ex As Exception
MsgBox(ex.ToString)
End Try

Hope that helps.

Robert Smith
Kirkland, WA
www.smithvoice.com

"mathon" <ma****@discussions.microsoft.com> wrote in message
news:0D**********************************@microsof t.com...

Is it not possible to extract values from an excel sheet to display for
example in a DataGrid?? :(

regards

mathonhon

Jul 21 '05 #3

This thread has been closed and replies have been disabled. Please start a new discussion.

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