Is there a need to explicitly close the connection in this Microsoft Data Access Application Block for .NET? i am encountering timeout expired pooling errors in the sql server 2000. I am wondering if the unclosed connection is the problem
View 2 RepliesWe are working on an ASP.Net/VB.Net application using Enterprise Library for our data access (DAAB).
We are trying to store DateTime values in an Oracle Date field. However, the precision is being lost. Currently only the year, month, and date are being stored. We need better precision than this.
Oracle Dates are supposed to "includes not just the month, day, and year, but also
the hour, minute, and second. "
I have an error ERROR [22018] [Microsoft][ODBC Microsoft Access Driver] Data type mismatch in criteria expression. and I've been trying to solve this but unfortunately I couldn't get the hack of this error. I'm a newbie in dotNet.
Public Sub LogInContinue(ByVal senter As Object, ByVal e As EventArgs)
Dim LibDS As DataSet = New DataSet
Dim LibDA As OdbcDataAdapter = New OdbcDataAdapter("SELECT * FROM tblUserAccount WHERE Uname='" & txtUserName.Text & "'", LibConn)
[code]......
I am building a VB 2008 Express Edition application.I have built a database (with a single table) using SQL Server Compact 3.5 and have connected it to the project. I am able to view and edit the data using a DataGridView on a second form (tutorial made this very easy). I need to work with the data in the table within the application. how to easily load the entire table into an array or even read the table a row or cell at a time so that I can make all of the data available for manipulation within the application (the tutorials only seem to show how to display the data).
View 7 RepliesI have MS Access 2007 Databases and VBA modules associated with it.I Now want to upgrade my project so as to use Sql Server 2005 and Vb.net using visual studio.net.Can any one suggest Complete details on the transfer without much hassle or data loss.?
View 3 RepliesI'm currently trying to convince management of the need to port one of our applications to .NET. The application has grown to be a bit of a monster in Access (backend in SQL), with 700 linked tables, 650 forms/subforms, 130 modules and 850 queries.
I pretty much know all the major benefits of doing this, but now need to look at how this can be achieved technically, so I can put a project plan together.So, my plan was to convert the queries into stored procedures and/or views on the backend and re-write the forms in WPF or WinForms.
Now, the code is where I come unstuck. Is it possible to packaged up the code behind and modules into dlls and consume them whilst it is slowly ported to VB/C#?
What we can't be left with is half an application in VB/C# and half in Access, it must 'appear' to all be one application, even half way through the migration.EDIT: Just some more info about what we do and why we're looking at moving away from Access.We are essentially an ISV and the Access application is our main product. This application has been developed over a period of 15 years, by many, many developers on an ad hoc basis. There is no documentation for this application.
We also have problems with getting branching in SCC to work properly, so we've currently got 4 or 5 code bases for the half a dozen clients we have. On top of that, all the testing we do is completely manual, which you can imagine is very labour intensive, and only scratches the surface of what really needs to be tested.We're currently looking to expand, and have a number of sales leads that are in the final stages. I'm worried that with these new sales, we're going to be swamped with support and testing, and that this application is going to become even more entangled an buggy.
I'll also add to this the fact that we're just about to enter the spec phase of a brand new product, which is almost certainly going to be built in .NET. If we were to rewrite the Access application in .NET, then the people we use for that can go straight on to this new development. If we were to stay in Access, then we'd have to get some new Access people in, whom would have to be retrained once we start the new development.
So essentially it has come down to two choices, major refactoring work in Access to try and 'organise' the code a bit better, and those of you who have suggested culling parts are most probably right; I'm sure there are parts that are no longer used. However, I fear that if we stay in Access we still won't be able to build in effective testing and we still won't have proper SCC branching, which will lead to support continuing to be a nightmare, and any future developments on this product makings things worse. Either way there is a lot of work that we're about to embark on, which is either going to be done in Acces, or .NET.
how to connect to a database and retrive data in a table using oledb data provider in Microsoft access?
View 2 RepliesRemove a record from a Access database using a VB?I have created a small database in Access,then using VB 2008 Express Edition, created a link between Vb form and Access When I try and Add then Save a record, the information is not in the database.But I can't remember how to:-*Add a record*Save the record*Edit an existing record*Find a record in the databas of interest, is it possible for the add button to be clicked when the VB form loads, and if so how do I achieve this
View 2 RepliesThe backend uses Microsoft SQL Server 2000 runtime engine with an MSDE database engine. The frontend however is built with Microsoft VB.Net and the dotnet framework. I'm not sure how this changes things when trying to extract the tables. I've found the folders where SQL-notepad looking files are contained but am not sure what my next step should be. TBH i dont know what version of Microsoft VB.Net framework is used but the system is quite old and was made in 2001. If you haven't noticed from my poor phrasing i'm a bit of a newb when it comes to programming. If there is a particular programming code i have to put in i wouldn't really know where to put it.
View 3 Repliesi've started work at this small charity and they need me to extract the tables and data from an old buggy system and create a new Access system but i'm having trouble extractig the data.The backend uses Microsoft SQL Server 2000 runtime engine with an MSDE database engine. The frontend however is built with Microsoft VB.Net and the dotnet framework. I'm not sure how this changes things when trying to extract the tables. I've found the folders where SQL-notepad looking files are contained but am not sure what my next step should be. TBH i dont know what version of Microsoft VB.Net framework is used but the system is quite old and was made in 2001.
View 2 RepliesI am working on a VB2008 Express application that makes used of the office interop access. The exact code is:
[Code]...
I am using the publish wizard in VB 2010 Professional for deployment as I tried the InstallShield and the Standard Build and cannot get support. My last resort is this wizard. Please help me I am getting the following 2 warnings. I downloaded MDAC 2.8 SP1 for warning 2 and after I run the program it doesn't upgrade and appear in VB2010. How can I install it in VB2010 Pro. Also How can I get the .Net.Framework.2.0 installed.
Warning 2 The 'SAP Crystal Reports Runtime Engine for .NET Framework 4.0' item selected requires 'Microsoft.Data.Access.Components.2.8'. Select the missing prerequisite in the Prerequisites Dialog Box or create a bootstrapper
package for the missing prerequisite. SendGlobalMobileAdvertisingBlasts
[code]....
Is it possible to use microsoft access database for Windows mobile application and save this mdb file locally in the pocket pc?because im trying to make an application to connect to mdb database but this imports seems to be not working.
HTML
Imports System.Data.oledb
oledb is not a member of system.data. why?
I am trying to learn how I can enter data into a Microsoft Visual Basic 2010 TextBox on a form and when I Tab to the next TextBox, the data from the first TextBox is automatically appended to a Microsoft Access 2007 table. For this question, no other controls or objects are necessary.
View 5 RepliesI have an error "ERROR [22018] [Microsoft][ODBC Microsoft Access Driver] Data type mismatch in criteria expression". I am using VBdotNet2005 and MS Access as its database, and I can't really get the hang of this error.
View 8 RepliesI'm currently doing a project that includes access 2010 My question will be what driver can I use for an access 2010 *.accdb type file? For a *.mdb it works perfectly well with
ConnString ="Driver={Microsoft Access Driver (*.mdb)};Dbq=" & Application.StartupPath & "\CITSDB.mdb;Uid=Admin;Pwd=123;"
But, when I changed the mbd to accdb:
ConnString ="Driver={Microsoft Access Driver (*.accdb)};Dbq=" & Application.StartupPath & "\CITSDB.accdb;Uid=Admin;Pwd=123;"
It resulted in errors:
ERROR[HY000][Microsoft][ODBC Microsoft Access Driver]Could not find file '(unknown)'.
ERROR[IM006][Microsoft][ODBC Driver Manager]SQLSetConnetAttr failed
ERROR[HY000][Microsoft][ODBC Microsoft Access Driver]Could not find file '(unknown)'
And then it shows me that my code for
If dsLogin.Tables(0).Rows.Count = 1 Then
IndexOutOfRangeException was unhandled
Cannot find table 0
I knew it must be the driver but I don't know what accdb driver I can use for the connstring.
I am working on a project. Part of my project requires me to capture data, for example, email address, from certain rows/columns of a datagridview(form2.vb) and displays them in a textbox on another windows form(form1.vb) with a click of a button(Add Contact button). The problem is the datagridview on my form must be able to display databases by making a connection to Microsoft SQL Server 2005 but so far, i have not been able to do that. I have seen many codes with regards to my problem but i do not know how to implement it.
Below are my codes that i have written so far. My program's limitations are not being able to display databases from Microsoft SQL Server 2005 so i created the statement below to add columns and test my codes.
DataGridView1.Columns.Add("CustName", "CustName")
DataGridView1.Columns.Add("Email", "Email")
[Code]...
I have multiple documents stored in Attachment data type in Access database. UsingDataReader, I need to read multiple attachments along with their file name and store them on the file system
View 1 RepliesWhen I try to install an application to another user's computer I receive a message box that says "Unable to run or install application. The application requires that assembly Microsoft.SqlServer.Pipelinehost version 9.0.242.0 be installed in the global assembly cache (GAC) first.A key feature of the app is to export data from sql server to an excel spread sheet so I have the following import statements
View 3 RepliesI am developing a database system using Microsoft Visual Basic 2010 and Microsoft SQL Server 2008 R2. Honestly i don't have any knowledge on how to connect the data in VB to Microsoft SQL Server 2008 R2, so kindly anyone could support me with tutorial videos or ebook or any reference
View 4 Repliescan anyone teach me how to save data in microsoft access database and retrieving it back from database?[code]so, how do i save it in that and how do i load their data by typing their ic no only..
View 5 Repliesi have created an application that uses an Access Database. Each time the application closes i tell it to repair and compact the database. The problem is that because the database is stored in the program filesapplication_name folder it requires administrator rights because of UAC. What should i do ? Should i store the database somewhere else where no adminstrator rights are required ?
[Code]...
I'm trying to connect a VB application (2010) to an MS Access DB by adding a data source from the data menu but I receive this error message "The connection you selected uses a local data file that is not in the current project.Would you like to copy the file to your project and modify the connection ?
If you copy the data file to your project, it will be copied to the project's output directory each time you run the application" and the options are (yes , No , Help)
If I choose Yes I will not be able to make the application 'device independent ' since it will not be copied under the bin , and if I choose No , changes won't be applied to the DB
I have vb .net windows form application that I want to connect to Microsoft access database using "Microsoft DAO 3.6 object library". My problem is that when I go to Project tab -> Add reference -> COM tab, there should have been "Microsoft DAO 3.6 Object Library" on the list, but for some reason It's not on the list. Then I googled, and found out that the location of "DAO360.DLL" is "Program FilesCommon FilesMicrosoft SharedDAO". After clicking on Browse tab, I browsed to that location, and I guess I added reference on another way.This is the code that I used before for connecting to Access, but for some reason It doesn't work this way on this PC.
[Code]...
how to publish an application with an access database file on vb 2005?
View 2 RepliesFor some reason I am not able to use DoCmd.OutputTo with my access object in VB.net 2005. I get the following error: 'OutputTo' is ambiguous because multiple kinds of members with this name exist in interface 'Microsoft.Office.Interop.Access.DoCmd
I am referencing the Microsoft Access 12.0 Object Library and using Imports Microsoft.Office.Interop
Dim objAccess As New Access.Application
objAccess.OpenCurrentDatabase("C:Database.mdb", False)
objAccess.DoCmd.OutputTo(
A similiar command Docmd.SendObject seems to work just fine, so I don't know why I am getting that error or how to fix it.
I have written a program that access's data from sql and it seems to work fine, I have now installed sql to the live server and restored a copy of the data in to the new server. I have altered the connection string in the program to point to the new server yet when I compile and run it it still wants to look at the old server
View 1 Repliesi'm trying to insert data from Form about customer and i have the following [code]but the underlined line above is giving me error that says"Data type mismatch in criteria expression" how can i sole this problem?
View 3 Repliesmy windows service crashes because of an unhandled exception in an oledb select command on ms access, i found that tables in query contain #Error as data value in some fields , can anyone tell me how to handle this case
View 6 Replies[code]In the above code what will be state of 'conn' variable and the 'cmd' variable and the State of the Connection to the DB in the following two case
i. Me.Close line
2. If any error occurs