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Using Dataadapter.Fill, a DS.tables("TBL") was populated with, say, n records. Is there a built-in method / procedure through which one can easily find out the row- number in a datacol of the "TBL" contains a given value.
Say, for example, given datacol("FNAMES") and another string fn_str, is there a readily-available procedure such as :-
dim kt as integer, fn_str as string = "John"
kt = ReadilyAvailable(datacol("FNAMES"), fn_Str)
Here, kt will be a value - either -1 or {0 .. n-1}. -1 indicates that the given value does not exist.
Ofcourse, alternatively, a for-next loop will have to be written, but i wanted to avoid it 
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C# syntax:
myDataSet.Tables["mytabl"].Rows.Find() method.
Mazy
"Man is different from animals in that he speculates, a high risk activity." - Edward Hoagland
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thanks, Mazy.
Regards,
Sanjay.
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Whenever you insert a new record, then decide you want to manipulate that record immediately after, is there any easier way to find a reference to it than querying for the last record?
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If you have inserted via Dataadapter>Dataset, then, if the Dataset has not been disposed/cleared off, the inserted record contents will still be in the "tables", from where you could pick it back up.
Hth.
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Thanks, but for this app I'm just using readers and class representations.
If anyone is interested, I found the following:
MySQL: SELECT LAST_INSERT_ID()
MSSQL: RETURN @@IDENTITY
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hello friends
i am new to vb.net. can i use "ADO" in vb.net instead of ADO.NET. iam a bit scared to use ADO. becoz all the books suggest to use ADO.NET.
my doubt is if i use ADO then will there be any problems reg. performance, installation ... etc and about the problems that i can't at this level.
please any body guide me.
(i can't accept any guesses .... extreemly sorry for that. i am very much obliged if i can get the correct guidence pls.)
thank in adv.
mohan G
Mohan G
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ADO.net is well formatted and well suited for the applications with the .NET framework... better performance too
I was born intelligent
Education ruined me!.
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Hey
i am trying to use CoCreateInstance();but it is giving failure only. i am very beginner to sql server. what may be the reason for this error. is it because of sql server setup?
Please help me.
Thanks
JP
ALL THINGS ARE POSSIBLE UNTIL THEY ARE PROVED IMPOSSIBLE-AND EVEN THE IMPOSSIBLE MAY ONLY BE SO,AS OF NOW
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CoCreateInstance is a COM API; what COM object are you trying to create? Is the object registered?
If you're not trying to create an ADO object or a SQL-DMO object, please ask on the COM forum.
Stability. What an interesting concept. -- Chris Maunder
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Thanks for ur reply, I am trying to create OLE-DB provider. But its giving error. Should I register the COM component? I didn't do this. Please help me.
ALL THINGS ARE POSSIBLE UNTIL THEY ARE PROVED IMPOSSIBLE-AND EVEN THE IMPOSSIBLE MAY ONLY BE SO,AS OF NOW
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Typically a provider will be registered properly by its installer, so that's unlikely to be the problem. Have you called CoInitializeEx or OleInitialize on this thread?
I suggest checking the return value of CoCreateInstance in winerror.h to see if there's a better description of the error.
Stability. What an interesting concept. -- Chris Maunder
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Hi Friends,
Is it possible to have both servers installed on same machine and concurrently working?
Vikram S
VikramS
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You mean 2000 - is that 8.0?
You can have them both installed on the same machine. I believe you want 7.0 to exist and then install 2000 as a new instance - but I not sure that is a requirement.
Barbara
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As the other reply... the answer is YES... but I was wondering 'why would u need that'
I was born intelligent
Education ruined me!.
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Am having major problems trying to connect an Access database to my webpage via dreamweaverMX.
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What connection string are you using?
Michael Flanakin
Web Log
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I created a database application in Acess and I want to connect to my website. I published my web using DreamweaverMX. For example I have a login page that I want to be validated with the data(names) in my Acess table. Eartlink is my webhost and they do not support ASP. So, my question is three folds.
1. Do you know the steps to make the connect using a login page as an example?
2. Do I have to convert to MySql in Acess?
3. Do you know of any good book? they ones that i'v tried pretty much suck
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What language do you plan on doing this with? Or, do you even have a plan? You will first need to find out what Earthlink can support. If you're deploying to their servers, you are limited to their list of supported technologies. It is very likely that they don't support scripting (ASP, PHP, Perl, etc.) or compiled (ASP.NET, JSP, etc.) technologies. You need to find this out first.
Michael Flanakin
Web Log
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iamucha wrote:
Am having major problems trying to connect an Access database to my webpage via dreamweaverMX.
If u get error message... whats the error message
I was born intelligent
Education ruined me!.
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Hello all.. I use CDatabase and CRecordSet to access to MS Access database
Here what I did to update some record of the table
I have database called db1 and it contains table1
table one contains three columns, data1, data2, and data3
and I have an array to insert to the table1,
I want to update data2 if data3 = true
so I wrote the following code..
<br />
CDatabase db;<br />
MyCRecordSet(&db);<br />
<br />
BOOL bSuccess = db.Open(mdsn, FALSE, FALSE, "ODBC;",FALSE);<br />
tablename = "table1";<br />
rs.Open(CRecordset::forwardOnly,tablename); <br />
for(int i=0;i<5;i++)<br />
{<br />
CString qstr = "Update " + tablename + " set data2 = '" + arr(i) + "' where data3=1";<br />
rs.m_pDataBase->ExecuteSQL(qstr);<br />
rs.Requery();<br />
<br />
}<br />
db.Close();<br />
but the table didnt' get updated..
why..is it?
Thank you
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Bill Gates says  :
CRecordset::forwardOnly A read-only recordset with only forward scrolling
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Hello,
I've got the problem to keep a datagrid updated, everytime
changes at the database-table(sql-server) are made.
My first idea was to do this by polling (timer) and filling a DataSet,
but it seems not the best way
Does anyone have suggestions?
thanks
Jörg
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There's currently no way for SQL Server to tell you when an update has occurred - this feature is coming in the next version, now due next year.
For the moment, you have to poll.
Stability. What an interesting concept. -- Chris Maunder
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