Db Row Limit For Adodb?
Jan 23, 2010is there anyway to limit the rows selected in adodb?i had something like this
vb.net
Dim command As New OleDb.OleDbCommand("select*from Table order by Col1 limit 5", connection)
is there anyway to limit the rows selected in adodb?i had something like this
vb.net
Dim command As New OleDb.OleDbCommand("select*from Table order by Col1 limit 5", connection)
I have something strange occuring. The following code works 100% when run in VB2008 Express.When compiled and run onthe same system, it generates the above message.The codebasically opens a Access DB and loops thru the db There is a progress bar (also tried a simplelabel) to display progress using AbsolutePosition.
dbInUse.Open("Provider=Microsoft.ACE.OLEDB.12.0; Data Source=C:SCDBv4DataSCDBData.mdb")
rsInUse.Open(OpenCommandSQL, dbInUse, ADODB.CursorTypeEnum.adOpenKeyset, ADODB.LockTypeEnum.adLockOptimistic)
[code]......
For some reason this is giving me errors..
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
Dim ConnectionString As New ADODB.Connection
Dim rs2 As New ADODB.Recordset
[CODE]...
I'm converting a VB6 + ADODB app to VB.NET 2010 and targeting both x86 and x64 I understand that ADO is available in both 32 and 64 bits and that .NET supports it.The VB6 code uses ADODB and ADOX to work with OleDb and Odbc data sources. It also uses the Jet and Replication Objects 2.6 library to compact and copy Access database files (if the uderlying database it's using is Access)I'm wondering if I should consider using OleDbConnection/OdbcConnection in the .NET version of the software or stick with ADO.I've looked at OleDbConnection, OdbcConnection and SqlConnection and can see that porting the old code over would be time consuming and risky.
View 3 RepliesI went through many ado.net documentation but this doesn't seem to get into my matter somehow. It'll be great if anyone can show me how to execute the following function using ado.net coding:
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How can i add Interop.ADODB.dll to my references as i cant seem to find it when i try?
View 3 RepliesApplication Type = Windows Forms
DatabaseType = MS Access 2007
I am developing a win form app in vb 2008 combining with ms access 2007 as backend. I am using ADODB.connection and ADODB.Recordset objects.
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i am trying to save information in to my access database , i created new instance of an ADODB.Connection object and ADODB.Recordset object but visual studio 2005 is given me an error message that ADODB.connection and ADODB.Recordset are defined?
this is my code
Public Class Form1
Dim con As New ADODB.Connection
Dim rs As New ADODB.Recordset
Dim str As String
[code]....
am trying to save information in to my access database , i created new instance of an ADODB.Connection object and ADODB.Recordset object but visual studio 2005 is given me an error message that ADODB.connection and ADODB.Recordset are definedthis is my code
Public Class Form1
Dim con As New ADODB.Connection
Dim rs As New ADODB.Recordset
[code]......
I have a piece of software I am converting to ADO.NET from ADODB. In ADODB I can update a recordset by simply.
Dim rs as ADODB.Recordset
rs = query("select * from tblSomethere where something = something")
rs("something").Value = something.Text
rs.Update()
OR IF I WANTED TO ADD
Dim rs as ADODB.Recordset
rs.AddNew()
rs = query("select * from tblSomethere where something = something")
rs("something").Value = something.Text
rs.Update()
I am confused about to easily accomplish this. I know I can use an insert or update command but it would be much easier to do something like this. NOTE: The query just returns a filled RecordSet, it just executes the command and connection without me having to do it all over the place.
I am new in VB.NET.I Developed Project in VB Recently.In VB6.0 i worked on ADODB Recordset by Connecting Access DB.And i wrote SQL Queries in the Functions and these Functions Called in the Recordsets. I will send u my code wich i developed in VB6 in the below.
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I encounter this error as mention in the subject line. I just change from windows XP 32 bits to windows 7 64 bits, and the following code were working fine in windows XP, but in windows 7 I get ambiguous namespace for all the DIM cnn As New ADODB.Connection and DIM rst As New ADODB.Recordset.I Have no idea what is going on.However, the exe that is created from my old XP runs fine on both XP and Windows 7 32 bits but not the Win7 64 bits.
Public Sub mStartConnection()
Dim initPath As String
Dim File_Reader As StreamReader
Try
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in vb.net, there are some applications that use adodb to access a mysql server.
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re writing these functions is a big task - and I am not interested in doing it unless absolutely needed. Here is my problem though. even if the connection is closed (and i have stepped through the code, it closes) The connection is still visible on the sql server in a sleep state why? and how can i make sure that the connection is closed.
I've written some code to try some thing. I don't get an error message. However, the record count return " zero". I declare some objects and make a connection. That all works fine. But no records.
Here's the code :
Public Class Form1
Dim vtest As VariantType
Dim cn As ADODB.Connection
Dim rs As ADODB.Recordset
Dim cmd As ADODB.Command
[Code] .....
I had the great fortune to receive the task of converting an ancient VBA Access order tracking application into a stand alone VB application. Along the way I was trying to parameterize their SQL queries, most everything has gone well but now I am getting an error I can't figure out."Item cannot be found in the collection corresponding to the requested name or ordinal."Iam kind of stuck using as much as the old code as possible because the client "knows VB" and wants to be able to edit the code after I'm gone.
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Private Sub frmDAFTARGAJI_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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01Private Sub Command1_Click()
02
03 Dim MyConnObj As New ADODB.Connection 'ADODB Connection Object
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I migrate a project from vb 6.0 to vb.net 2008.
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The following VB code is from an application that I am developing. It establishes a record set by executing a SQL query on a SQL connection (ADODB). On the first pass through, the statement fails with an error 91, I trap it and re-execute the sub and then the statement works! The statement that fails is italicized and bolded below.
Private
Sub LBTasksAD_SelectedIndexChanged(ByVal
sender As System.Object,
ByVal e
As System.EventArgs)
[Code]...
I am getting errors when I try to use this adodb.connection and command in my code. The error I am getting is saying that the connection and command are not defined. I read online that depending on your version of vb that you might use the "OLE" connection instead of ADODB.
Imports System.Text.RegularExpressions
Imports System.Data.OleDb
Imports System.Data.SqlClient
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We have a VB.net application using both ADO.net and ADODB connections(both connecting to MS SQl server) Whenever an ADO.net connection throws an expection, we cleared the pools Now if any ADO.connection reopened and everything works fine Is there any way to clear pools for ADODB connection?
View 1 RepliesMy app currently uses Interop.ADODB.dll to retrieve data from an access database.My compiled setup file has to include a Interop.ADODB.dll file for the software to work.What would i have to do in order to convert my app to drop the interop file by using Ado.net instead?Would it simply be a matter of changing the references and connection strings or does it involve alot more than that?
View 3 RepliesWe have had a visual basic.net (2002) service running on our server for several years now with no problems. However I recently needed to update one of the DB calls by adding additional fields to the SELECT statement. However, after adding the new fields, some of the returned data is coming back empty when I loop through the records. I have confirmed that the querystring is accurate and returns all of the data through a third party viewer, so I'm not sure what is going on.For example, in the code below, everything worked fine with field1, field2, and field3. However, when I add field4, data for field2 and field4 come back empty when looping through the results.
View 10 RepliesUsing the ado.net connect schema you can get the schema from a access database. I can use the alter statement to add a field, but I want to update the descrption and default properties. Can the be done without using adodb or adox (com objects)?
View 3 RepliesThis program has worked for a year. It is stored in a remote server and triggered to run by the client.At least till this last build. Now the report cannot find the dll. I placed it in the same folder of the server with the exe and have copy local set.
View 3 RepliesI have a vb program accessing a table in an sql server database. I would like the vb program to wait if it attempts to update a row which is locked in the table. The default behaviour of the recordset seems to be fail immediately with a timeout if the record it wants to update is locked.
The sql server is set to a default lock_timeout of -1 (infinite I believe). Is there a way to have an ADODB recordset wait on a lock (say for 60 seconds) and then fail if it still can't update the record.
I want connect to MySQL without any AdoDB and those things.I want make program where must to be logged in before it opens.
View 6 RepliesI'm connecting to Outlook using Adodb. (ADO is a requirement)
With ADOConn
.Provider = "Microsoft.JET.OLEDB.4.0"
.ConnectionString = "Exchange 4.0;" _
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then using the sql
Select * from Calendar
which returns the Appointments, but with no start or finish times.
my program does not work on other machines.although they stood Framework & adodb.dll.writes that the error in the "Update".
View 7 RepliesI'm in the middle of porting a VB6 product to VB .NET and .NET Framework 3.5, using Visual Studio 2008. Backward compatibility with customer VB6 legacy code is a requirement.Our VB6 product uses the COM ADODB.Recordset objects extensively both internally and in our API. They port directly to VB.NET if I add an adodb interop reference to my VS 2008 project. My question is how long will Microsoft continue to support ADODB.Recordsets in their languages and operating systems? 2018?I'm trying to make a design decision. Since backward compatibility with VB6 is a requirement, I would prefer to leave them in the .NET code. However, if support will be dropped soon in the near future, then I will use ADO.NET datasets instead, and convert between ADODB.Recordsets and datasets until support is dropped.
View 1 Replies