I have very a rudimentary understanding of Microsoft Access and VBA Code.
On my work desktop, I have Microsoft Office Professional Plus 2013 Access
I've been tasked to create a MS Access application with an Access DB.
I started developing an MS Access application with Forms , and the corresponding DB
I'm using VBA code event handlers(or Event Procedures) for the UI control buttons.
I wanted to create a common configuration settings area for said application( like ASP.NET web application have web.config files or app.config files )
I failed to find anything similar for MS Access application development.
Could someone please provide me with an explanation as to how to implement an MS access implementation model/software design pattern for common configuration settings area that is modular, reusable, clear and concise?
As noted, I great way to do this is to simply create a table in the front end. It is assumed that you will split your database into two parts. The code/forms etc. is the so called front end,and then you have the back end part (the database - it can be a accDB file, or it can be say SQL server).
So the typical update and deploy of your software will be:
Re-link your tables from test database to the actual live production database.
Compile your accDB into a accDE.
Deploy this new updated "next" version of your software to all the desktops.
So, since any change or addition to settings will be in the new front end then any application wide settings you have will thus roll out with your update.
It often depends on the user base. In the case that we had multiple customer sites running our software, then using a local table would not suffice, since things like path names, connection strings to the database etc. are customer specific. So, in this case we moved the settings table out to a text file (setup.ini). So we now use a setup.ini file that is external to the program and assumed to be deployed in the same folder as the front end. On startup we use the windows API to read ".ini" files.
So, both ideas (external setup.ini) or a local table in the front end are rather good choices from a development cycle point of view.
So once you down the road in developing your application, and the table/data structure changes are down to a dull roar, then it is time to split your application. (use the built in split wizard for this). I will say that even for my .net applications, I still often use a external setup.ini file for settings, since once again with multiple customer sites, it not practical to have customer specific settings in the application as opposed to a external settings file.
Related
I am using ADO to connect to an access database from an excel spreadsheet using code written in vb. The spreadsheet allows someone to retrieve files stored locally on my machine according to what they enter in certain cells and from interrogating the database. This has worked well which presents the frightening prospect of me now feeling encouraged!...
It is my wish to give a copy of my spreadsheet to people but retain the files and database on my own computer or a dedicated server. ( I do not want the users to be able to access anything other than a view onto the data or the files that I allow them to access). I totally appreciate their are a myriad of alternative technologies that I could and might need to achieve this. But I really am quite a simpleton and would like to be able to simply amend my connection string with something that uses an IP address and similarly with the files. Is this even possible? Can someone advise me where to even start looking for a solution if it is not? I've browsed through stuff on VPN's, application servers, ASP's etc. without even knowing if it is relevant and, as I say, I need the dumbsters solution. I'm happy to read - but what......should I look at VB.net?
A VPN would allow a similar setup to what you have now in as much as your would need to modify the connection string and file paths (to network share paths) but has drawbacks:
Users/you would need to configure a VPN client
Your machine would be the host so would need to be always-on with sufficient bandwidth
Users would be logging on to your machine so you would need to manage access rights/security
This is difficult to scale and a pain in to manage, which is something that is also true of attempting to serve Access content over the internet.
A more standard way to do this would be to:
Get an ASP.NET hosting account with SQL Server support (or set this up on your machine)
Migrate the Access data to SQL Server (which unlike Access is specifically designed to support multiple users over a network)
Update your VBA connection string and make any required changes to your SQL
Create an ASP page that reads the files stored on the server and returns their content
Modify the code you have that loads files from disk to instead query this ASP page over HTTP and read its contents
Retaining Access; you could also create a ASP page that executes queries, reads the data and converts it to XML returned to your spreadsheet for processing.
I'm doing a project with vb.net (smart device) on visual studio 2008 and I need to connect to a database on the device itself (I do not have a physical device to test, only emulation). How should I go about doing it? I would like the database to be in the device on start up.
I've read on the internet that you have to make a reference to System.Data.SqlServerCe but the documents are, in my opinion, vague. So, I'm pretty lost here.
So there are two questions here:
How do I deploy my database so it's there when my app starts?
How do I access that database from my app?
Both are straightforward.
A1. You have a couple options. First, understand that SQLCE databases are a single file, typically with an SDF extension. You can either package it with your app for deployment, so you know it will be there on first run, or your app can check for its existence on startup and crete the file if it's not there. If you need to populate the initial database with data (lookups, etc) then option 1 is probably better. As long as you deploy/crete the database in a persistent storage location (and under WinMo/Pocket PC that's pretty much anywhere), it will always be there when your app starts up.
A2 You are correct that you need to add a reference to System.Data.SqlServerCe, which is again straightforward. Just add a reference in your smart device project:
Once you've done that, you use the SqlServerCe namespace objects to create the database, tables, indexes, etc, insert and query data, and all of that good stuff. Tutorials 2 and 3 on MSDN here are a really good start and they have VB.NET examples. The nice thing is that most desktop examples for VB.NET accessing a SQLCE database will work as-is on the device, and the things that don't work are usually in the presentation of the data, not the actual database access code itself.
I am attempting to integrate an access program into Microsoft visual source safe 6.0.
I have downloaded an extension which allows source control access in access.
Here is the site that I used to guide me in my project
http://www.kevingao.net/sourcesafe/integrating-sourcesafe-vss-with-access-2007.html
I have imported the access program into source safe. But I am having trouble with access with multiple users on the network.
Any suggestions?
I think the problem referred to is that multiple developers (users) can't check out the code from VSS. I am having the same problem with an Access database and came across this when researching the problem. VSS will not let anyone except the user who created the project check it out.
Your app should be split into front end (forms/reports/etc.) and back end (data tables only). Only the front end needs to be in VSS, since only the front end has code in it. Also, each user should have an individual copy of the front end. It seems like you're trying to share a single front end. This will never work, and if you look at your app properly (the front end is the "program" -- you don't have multiple users running Word from a shared copy, so why would you share your Access "program"?), it will be obvious why you shouldn't be doing that.
I have a solution that contains multiple reporting projects (one per target deployment folder - I think this is the only way to achieve this effect, at least until I abandon Visual Studio for report deployment).
I want to specify my data source information "once and only once" for all these reports.
So far, I have created a separate reporting project that contains my shared data source. If I deploy things to a reporting server in the right order and offer sufficient prayers to appropriate gods, the reports seem to link up to the shared data source there and run (at least via the Report Manager in IE).
When I am developing a report, though, I can no longer "Preview" to try it out locally - I now must deploy it to a report server to try running it. This is a hassle.
Is my only recourse to add a whole bunch of copies of a data source (pointing at my development database), one in each project, set those not to deploy off my machine, and (probably) exclude them from source control?
A technique (dirty trick?) I am playing with now is to copy my data source (.rds) into each project, close Visual Studio, then in the underlying files/folders:
Delete the copied .rds from my report projects (leaving only the one copy in my Data Sources project)
In each report project's project file (Foo.rptproj), change the text of the Project.DataSources.ProjectItem.FullPath element from My Shared Data Source.rds to ..\Data Sources\My Shared Data Source.rds
This way all reporting projects reference the same underlying file on the filesystem, so they share a single data source definition, but each project also kind of has a "local" shared data source, so Visual Studio is kept happy.
Regarding source control: there is still only one copy of the .rds checked in, so we're not polluting the code base with lots of icky duplicates; the changes to the .rptproj files can be checked in, so we're not forcing developers into unnatural source-control gymnastics (selective partial commits etc.) to maintain a sane master copy.
Each reporting project will try to deploy this data source, though I've forbidden the overwriting of existing data sources on the server, so it's not too big a deal . . . and I suppose if I intended to overwrite the server's data source definition, it wouldn't really matter whether I overwrote it once or ten times with the same .rds.
Disclaimer: this is still an experiment. I don't have experience using this technique in practice yet, so I can't go so far as to actually recommend it.
Woody,
What we have tended to do is:
On the server have a folder called "DataSources", which is hidden from the users. In there will be all of the data sources.
For each reporting project in VS there will be a folder, also called "DataSources", but this time it will only contain the data source for this report.
As long as the folder structure is the same (i.e. report and data source have the same corresponding folder level on server and in VS) this seems to work for us.
Good evening/morning/after/noon.
I have an ASP.net 3.5 website and I am using vb.net in VWD 2008 Express, I am also using MS SQL Server 2008 Express, I used ajax tabs and a textBox charavters counter control develped by https://web.archive.org/web/20211020202742/https://www.4guysfromrolla.com/
The database is attached with MS SQL Server Management Studio Express and the files are stored in the SQL default "Data" folder.
The whole project's code and forms are stored in a folder in my E drive.
I need to hand the whole project to another coworker who have to finish it, please describe in steps how can i make my website portable (like i can put it all in a folder that he can carry around in his flash disk).
PS: I have had a problem trying to move the project from one server to the other, the pproject seems to look for the dlls of the AJAX control and the textBox counter where i originally unzipped the folders in which they cam in, which i think was on my desktop, although when i added those controls to the Tools tab, i created a new tab, then i choose the dll from the where i unzipped the controls source code, aint that enough?
Thanks in advance
When you create the structure, make a folder for referenced files in the source tree. You can then reference from there. If you do that the entire tree is portable. The only changes, from environ, to environ, are configuration elements. And, if on the local system, you use SQL Express and put in the App_Data folder, it cana connect to your coworkers system, as long as he also has SQL Express.