473,320 Members | 2,041 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,320 software developers and data experts.

ADO.NET update query

I am using OleDbDataAdapter in order to fill a data table and update it.
The fill method is working fine but the update does not work, and I dont
know why.
Here is my code:

Dim data_table As DataTable
Dim conn As OleDbConnection
Dim data_adapter As OleDbDataAdapter
conn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=
test_db.mdb")
conn.Open()
data_adapter = New OleDbDataAdapter("select * from test_table", conn)
data_table = New DataTable
data_adapter.Fill(data_table)
Me.DataGridView1.DataSource = data_table

'do some changes on the datagridview

Dim temp_val As String = data_table.Rows(row_index)(col_index)
data_adapter.UpdateCommand = New OleDbCommand("update test_table set minimum
= '" & temp_val & "' where growth_day = 1", conn)
data_adapter.Update(data_table)
conn.Close()

minimum and growth_day are fields in my database wich growth_day is the key.
I think the code is ok but the database stays the same and does not accept
the changes. I am using VS2005.
Jun 10 '07 #1
0 984

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

Similar topics

4
by: Surendra | last post by:
I have this query that I need to use in an Update statement to populate a field in the table by the value of Sq ---------------------------------------------------------------------------- Inline...
2
by: Mike Leahy | last post by:
Hello all, This question is related to updating tables - is there any way to calculate or update the values in a column in a table to the values in a field produced by a query result? An...
10
by: Randy Harris | last post by:
I imported records into a table, later found out that many of them had trailing spaces in one of the fields. If I'd caught it sooner, I could have trimmed the spaces before the import. This...
4
by: deko | last post by:
I'm trying to update the address record of an existing record in my mdb with values from another existing record in the same table. In pseudo code it might look like this: UPDATE tblAddress SET...
8
by: Maxi | last post by:
There is a lotto system which picks 21 numbers every day out of 80 numbers. I have a table (name:Lotto) with 22 fields (name:Date,P1,P2....P21) Here is the structure and sample data: ...
7
by: Mark Carlyle via AccessMonster.com | last post by:
I have this update query that I am trying to run. I know the syntax is messed up but do not know how to correct it. Select 'UPDATE', Transactions,'Set = where = ' From "Get Daily Balances" ...
3
by: Shapper | last post by:
Hello, I have created 3 functions to insert, update and delete an Access database record. The Insert and the Delete code are working fine. The update is not. I checked and my database has all...
31
by: Lag | last post by:
Having a problem updating my database from a web page, through a submission form. Can anyone help? ----THIS IS MY CODE IN update.php----(user, pass, and database are typed in directly, I...
3
by: eholz1 | last post by:
Hello PHP programmers. I had a brilliant idea on one of my pages that selects some data from my mysql database. I first set the page up to display some info and an image, just one item, with a...
16
by: ARC | last post by:
Hello all, So I'm knee deep in this import utility program, and am coming up with all sorts of "gotcha's!". 1st off. On a "Find Duplicates Query", does anyone have a good solution for...
0
isladogs
by: isladogs | last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM). In this month's session, we are pleased to welcome back...
1
isladogs
by: isladogs | last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM). In this month's session, we are pleased to welcome back...
0
by: Vimpel783 | last post by:
Hello! Guys, I found this code on the Internet, but I need to modify it a little. It works well, the problem is this: Data is sent from only one cell, in this case B5, but it is necessary that data...
0
by: ArrayDB | last post by:
The error message I've encountered is; ERROR:root:Error generating model response: exception: access violation writing 0x0000000000005140, which seems to be indicative of an access violation...
1
by: PapaRatzi | last post by:
Hello, I am teaching myself MS Access forms design and Visual Basic. I've created a table to capture a list of Top 30 singles and forms to capture new entries. The final step is a form (unbound)...
0
by: CloudSolutions | last post by:
Introduction: For many beginners and individual users, requiring a credit card and email registration may pose a barrier when starting to use cloud servers. However, some cloud server providers now...
0
by: Defcon1945 | last post by:
I'm trying to learn Python using Pycharm but import shutil doesn't work
1
by: Shællîpôpï 09 | last post by:
If u are using a keypad phone, how do u turn on JavaScript, to access features like WhatsApp, Facebook, Instagram....
0
by: af34tf | last post by:
Hi Guys, I have a domain whose name is BytesLimited.com, and I want to sell it. Does anyone know about platforms that allow me to list my domain in auction for free. Thank you

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.