Update DataSet or DataTable - Visual Basic .NET

ruca

Hi,

Can I update a DataSet or a DataTable using something like object.Update()
???

I was looking for something and I find out this functions, but I don't know
for real what they do.
AcceptChanges()
BeginEdit()
EndEdit()

I try to use them like this, to change the value of a field in first row:
ds.Tables("P").Rows(0).AcceptChanges()
ds.Tables("P").Rows(0).BeginEdit()
ds.Tables("P").Rows(0).Item("Num") = 9999
ds.Tables("P").Rows(0).EndEdit()
But it doesn't work.
Can I do something like this???
--
Programming ASP.NET with VB.NET
Thank's (if you try to help me)
Hope this help you (if I try to help you)
ruca

Nov 20 '05 #1

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20810

Armin Zingler

"ruca" <ru***@iol.pt> schrieb

I removed the ASP group from the list. (yes, you're an ASP.Net programmer,
though the question is not about ASP.Net. I'm a Nissan driver an don't post
my VB questions in the Nissan group (only mentioned to clarify how to choose
a group))

Can I update a DataSet or a DataTable using something like
object.Update() ???

I was looking for something and I find out this functions, but I
don't know for real what they do.
AcceptChanges()
BeginEdit()
EndEdit()

I try to use them like this, to change the value of a field in first
row: ds.Tables("P").Rows(0).AcceptChanges()
ds.Tables("P").Rows(0).BeginEdit()
ds.Tables("P").Rows(0).Item("Num") = 9999
ds.Tables("P").Rows(0).EndEdit()
But it doesn't work.
Can I do something like this???

What do you want to update? The database? If you do:
http://msdn.microsoft.com/library/de...terdataset.asp
--
Armin

How to quote and why:
http://www.plig.net/nnq/nquote.html
http://www.netmeister.org/news/learn2quote.html

Nov 20 '05 #2

Lars Netzel

If you are using a DataAdapter to handle the DataSet you can use:

DataAdapter.Update(Dataset)

/Lars
"ruca" <ru***@iol.pt> skrev i meddelandet
news:uo**************@TK2MSFTNGP09.phx.gbl...

Hi,

Can I update a DataSet or a DataTable using something like object.Update()
???

I was looking for something and I find out this functions, but I don't know for real what they do.
AcceptChanges()
BeginEdit()
EndEdit()

I try to use them like this, to change the value of a field in first row:
ds.Tables("P").Rows(0).AcceptChanges()
ds.Tables("P").Rows(0).BeginEdit()
ds.Tables("P").Rows(0).Item("Num") = 9999
ds.Tables("P").Rows(0).EndEdit()
But it doesn't work.
Can I do something like this???
--
Programming ASP.NET with VB.NET
Thank's (if you try to help me)
Hope this help you (if I try to help you)
ruca

Nov 20 '05 #3

Cor Ligthert

Hi Ruca,

Can I update a DataSet or a DataTable using something like object.Update()
This code you wrote you can use, ds.Tables("P").Rows(0).Item("Num") = 9999

I think that the rest you wrore is useles for you,

And than you have normaly in the simple way to make the following code(which
is all typed in this message without checking)

dim connection as new xxx connection(connectionstring)
dim da as new xxxdataadapter(selectstring, connection)
dim cmb as new commandbuilder(da)
if ds.haschanges
da.update(ds)
end if

and the last part in a try catch end try block.
Normaly it is not needed to open and close the connection, that does the
dataadapter himself.
(he closes only a from himself opened connection)

I hope this helps something

Cor

Nov 20 '05 #4

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