Finding A Record Across Multiple Access Databases?
May 3, 2010
At my company, product is boxed and then placed on a scale/label printer set up in order to be weighed and labeled. The application running on the PC also records a record of each box in an MS Access Database which is then transferred to the main server. There is a separate access database for each scale PC and currently the only way our shipping department can print out a manifest for each pallet (which contains a list of all the boxes and their weights) is to open the correct access database and print out the report by entering the pallet number. Since there are six printer scales and the shipping person has no idea which scale it will be on just by looking at the number, she has to find the correct database through trial-and-error.
What I've been asked to do is create an application where she can simply type in the pallet number, and it will search each individual database for the number, then open the correct one where she can then print out the report without having to guess where it is. I've already figured out how to make the application open the database and report, but I don't know how to make it find which database the pallet record is contained in.Basically I want it to search a number of databases for a particular number in a field, and the return a value when it finds it of which database it is so that I can plug that in later. I have no idea how to do this and my searches online have proven fruitless.
I am using the code shown below to compare two Access databases with two fields each and write the results to a third Access database. I am getting an error at the "Do While DMReader02.Read = True" line: "Invalid attempt to call Read when reader is closed." Why would the reader be closed at this point if I am using different DataReaders in the two loops?
Central Database (replicated across multiple servers) Client Database 1 Client Database 2
The Central db has Users and Roles amongst other things The Client dbs have similar tables to each other but with some fields tweaked - contact, address, At present, each client db has its own user/role information which is copied from the central db by a scheduled process. I want to retrieve the user/role information directly from the central db instead (bearing in mind tables in the client db make reference to the user entity)
I'm using this function to return a value from multiple databases across three SQL instances (On the same server). I'm looping though a DataGridView that lists all the databases on one of the three SQL instances.Is there a faster way of doing this? It's quite slow using this method.
Function DatabaseStatus(ByVal SQLServer As String, ByVal Database As String) Dim myConn As New SqlConnection("Server=" & SQLServer & ";User Id=USER;Password=PASSWORD;Database=" & Database & ";") Dim Status As String = ""
connect my vb.net application to a remote sql server database, so every one who installs the application would be able to connect to the same remote database. the application would obviously require the internet to run.i also want the option to add more databases in the future, preferably one for each business who would use my software.i am wondering the best way to set up this server that could hold multiple databases. i would think i have two options:
1) set up the server myself on a dedicated computer
2) pay for some type of service that host sql server dataases
so how would i go about executing these options? i dont know the first thing. which option is better?i do however know how to connect to a remote database so thats not what i am asking.
I currently have an old database that has tables for requests and customers. This information is currently displayed in ASP.NET
What I was required to do, was to connect a new database for users into this system, while keeping the tables for the requests in the old database. Thus it is using 2 databases. I have set it up so, when a user creates a new request, in the request tables it saves it with his userID from the new database, but when the table is being displayed, it uses this new userID to find the user information from the old customers table. Thus I ended up with this:
Sub BindDataGrid() cmdoledb = New SqlCommand("SELECT r.customerid, r.RequestID, R.RequestDate, R.RequestDescription, a.AssignedTo, r.Urgency, r.ExCompletionDate from tbl_requests r, tbl_assignedto a where r.statusid = 1 and r.assignedtoid=
[Code]....
Currently it displays nothing, and gives out an error for myItem.Value = rdr.GetInt32(0) being a Null. I went through it step by step and it loads customerids normaly into the myItem.Value, but when they run out, it is supposed to exit, but keeps going, thus giving an error.
In .NET, Is it possible to run a nested query from two separate Oracle databases?
[Code]...
Ultimately, this is an effort to overcome an "ORA-01795" error from using an "in" statement with over 1000 items in the conditional list, without having to break the query out into multiple "OR value IN" lists.
I have a dilemma. The program I"m trying to complete is one VB project with three (3) forms. The first form will act as a menu dialog box. The other two forms will have a dataset (database) on each form. The first form will have a button when clicked it will pull up form 2 and the second button when clicked will bring up form 3. What I add the dataset to form 2 everything is fine. I can see my tableadapter, dataset and so on. Now, when I add the second dataset (database) to form 3, I loose my, dataset and so on. It doesn't appear on any of the two forms (in designer)tableadapter.
I'm trying to get going with using MS-Access databases in vb.net. In my case, I have a list of MS-Access database paths as strings that I want to talk to. I don't want to add the databases permanently to my project, since there are many of them (hundreds, actually). To start off, I have something like this:
Public Sub main() Dim conn As New OleDbConnection conn.ConnectionString = _ "Provider=Microsoft.Jet.OLEDB.4.0;" & _
[code]....
If I run this, it fails at " Dim rdr = cmd.ExecuteReader", with the error:
"Record(s) cannot be read; no read permission on 'MSysObjects'."
however, I can open the same database using the MS-Access client and run the same query without a problem.
I've been using MS Access for the database in many of my programs (they're always local databases, copied to the user's computer) and as is no surprise to anyone here, it's a horrible choice but it's what I knew and so I've just defaulted to it.What is the best one to use? How do I go about buying/getting it? Does it allow royalty-free copies? Can I import my existing Access databases into this? How do I deploy it?
If I import an access database into vb.net windows application will the included queries also be imported and will they continue to function correctly ?
created a database and I am able to read from the database into VB and also able to create a new set of feilds. I do needte a set of records, can't seem to find the right code.The access database has 4 columns one of which is a unique code (column name is 'code') that relates to each different item so I would have the user put in the code to the textbox and then the programme will delete the set of records corresponding to that code
I have two unrelated databases and I need to pass data back and forth between them. Right now I have created two separate entity models - one for each database - but this is causing issues in my code b/c I have to do a Using nameofcontext / End Using and when I try to then use some of the results from the first section of the code in a second Using nameofcontext / End Using it doesn't like it - b/c I've closed the connection to the first database!
I use Microsoft Access databases for my big project but I find the performance is very hit and miss. I time the processes and sometimes there is some serious lag. Here is an example of the code I use:[code]I was told that this is a very old method of accessing databases, which doesn't surprise me since it's the same basic code I was using back in VB6 about 8 years ago.
I see, to my supprise, when I tried to installed the Access Database Engine drivers that you cannot run both 32 bit and 64 on the same machine (I have Office 64 bit installed). If SQL can do it? So I have this nice new 64 bit machine with 64 bit office and my hands are tied... Can't correct code in 64 bit mode, can't read Access databases in 32 bit mode. I just have a hard time with 64 bit being out since XP, that this it just not fixed yet. Humm the Behemoth that is now Microsoft. Want to use OLEDB?
I am using Visual Basic Express 2008 64bit on a Windows 7 64 bit computer. It is running Microsoft Office 2010 University Edition, which only comes in 32 bit so far as I know. I am able to connect to my access .accdb database from within Visual Basic, which I wasn't able to do until I came across this: [Code]...
Beforehand, I had recieved a "Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine." error, and after applying the above fix worked fine. However, now that I am trying to publish my program, I am returned with the same error, no matter what target CPU I select. The program works fine on 32bit machines, however on my 64bit laptop it is unable to connect to the database. I have tried compatibility mode, downloaded many different add-ons from the Microsoft download page, but to no prevail. My understanding is that it is not actually compiling the published version to x86, simply running it as such when I build it in Visual Basic, and because there is no apparent way to set target CPU for compiling,
I need to make an application that from a master database creates a number of access database files (tables of a larger db), then these are manually given to users who fill in data, the database files are emailed back to a user who, through the application, combines them again.The only part of this that I am unsure about is problematically creating the access db's. I have read that through Microsoft Jet OLE DB Provider and Microsoft ADO Ext I can create them (the tables and data), but I also need forms.
I'm doing a little project on the side and was wondering if it was possible to enter data from text boxes on a vb form into two different tables in the same database? [code]
I have used two database (1) party (2)partydup.[code]In both tables i have common field ("code"). I tried to retrieve the value of "description" field from partydup table when the "code" field in both the tables are same. I run the below coding but it is showing the error as "No data exists for the row/column". But i have a record which contains the code field value as 123 in both the tables. Still it is showing the error. Please let me know what is the mistake i have done.[code]
simple coding procedure or recommend a resource for switching between two or more open Microsoft Access databases within a VB.net program, while keeping the same indexed place in each database? The purpose is to iterate through the databases conducting comparative analyses of field values, and writing the results of the analysis to the same databases or another database.
I am in the process in developing a new version of my software. I have changed my design of my database slightly (added a few new tables and new fields to existing tables). The issue is that my users have user data in the old Db that I would like to transfer to the new Db. Both Db's are access 2003. Because my software is distributed over a wide geographical are it would not be possible to do this manually
I have appended data between two different tables in a single Db, but not between two separate Db's.
ive been asked to write a program to deal with supply chains (tracking commodities, personnel, etc). I want to create a program that will allow multiple office to run the same software and update their local databases as well as a central database.how to best send the data/ recieve it, and store it so that all offices can see, edit, and store the data both locally, and over the internet.
I have a access database with these columns. USER_ID,COUNT,TIMES
Let say the current record is this: USER_ID,COUNT,TIMES STEVE20,24,1.5
Now I want to updated the current count record and times, but before updating I want the old record to be added to the new record. What should be my query?
I create an Access database in runtime, but when want to change the column properties I can't,the IDE tooltip say: "Property 'Item'is'ReadOnly'".I have a VB6 application with an Access 2003 database and not have any problem to manipulate to many properties like OrdinalPosition, ValidationText and others.
I have been using VB6 to manipulate MS Access 2000 databases via the DAO 3.6 library on Win XP. I have recently acquired Visual Basic Express 2010 and I have not been able to port my VB6 code. I can not find any sample code to use MS Access 2000 from VBE 2010. Is it possible to access MS Access 2000 from VBE 2010?
Here is my VB6 code:
Sub Main() Dim dbJobCPD As Database Dim rsJob As Recordset
I have an existing VB6 application which permits two or more users to work with local relicated MS Access databases. At start-up and shut down the local database synchronize with the master database (if the network permits dialogue) using
mDb1.Synchronize etc.
I am trying to port the application over to VS2010 and I cannot find anything equivalent to permit occasional synchronizing of various replicated MS Access databases with the master database (again, if the network permits contact between the two machines). Has anyone found a way of doing this for Access databases (not SQL Server databases)?
Works fine in VB6 but VS2010 has me beaten at the moment.
