I've looked through several questions but can't seem to find the exact answer I'm looking for. Perhaps I haven't done my search questions the right way! :)
I've set up a SQLite DB3 database for a Xamarin Forms test mobile app I'm developing. It works very well in a Xamarin Forms project.
I'd like to be able to access the same database through a Windows console app to do the "heavy lifting" of setting up the database for deployment - the mobile app is using it primarily as read only.
Is there any way to use SQLite.Net as a .NET console ORM? The implementation of things like SQLiteConnectionAsync appear to be mobile (PCL) based only. To set up the initial database, I did it through cumbersome SQL text commands. I would love to use the ORM to make adjustments and take advantage of things like LINQ extensions without the need to write a lot of SQL string code.
Have I missed something completely obvious? Thank you very much for your replies! :)
I'd recommend using Entity Framework as your ORM. SQLite is supported by Entity Framework Core: https://learn.microsoft.com/en-us/ef/core/providers/
This article might help:
https://elanderson.net/2017/04/entity-framework-core-with-sqlite/
Related
I'm would like some advice on the best data persistence solution to use for an application that will run on the desktop (WPF) and on Windows Phone 7, sharing data between both applications. Ideally I would like to use the Entity Framework. I have considered the following technologies:
Sync Framework 4.0 - only CTP at the moment but has the big advantage of offline use. However it is an immature framework that does not allow me to use Entity Framework and seems not to be very mainstream, requiring a fair bit of a learning curve to get working.
WCF Data Service - has the advantage of allowing me to use Entity Framework. However there seems like a bit of a lag when retrieving data and off-line use is a problem.
SQL CE with syncing to centrally hosted database using Sync Framework 2.1 - will work for my WPF application but not sure about the phone.
There are so many technologies available it is difficult to "see the forest for the trees". I'd like to stay fairly mainstream if possible just to make it easier with getting help and finding code samples etc. I'm open to any suggestions or guidance.
Unfortunately, SQL CE is not currenlty supported on the phone so you'll need to use one of the other available databases there.
Although it's only in a CTP format I'd recommend giving Sync Framework a look. It your synchronization requirements are anything but trivial you should really avoid reinventing the wheel by writing the synchronisation service yourself.
Even if you did use the Sync Framework, I don't understand why that would stop you using Entity Framework on the desktop.
AFAIK there are currently no ORMs for the WP7 so you'll have to create your own DAL there.
I'm a junior VB.net developer with little application design knowledge. I've been reading a lot of material online regarding different design patterns, frameworks, and methodologies. It's become a bit confusing for me.
Right now I'm trying to decide on what language would be best suited to convert an existing VB6 application (with SQL server backend.) I need to update the UI and add more user functionality and reporting capabilities. Initially I was thinking of using WPF and attempting the MVVM model for this big project. Reports would be generated from SSRS.
A peer suggested using ASP.net and I don't have enough experience to determine what would be better. The senior programmers here are stuck on using VB6 and don't have any input on what to use. They are encouraging me to use the latest technologies.
This application would be for ~20 users in a central location. Ideally I would stick to a Microsoft .net language. Current interface is similar to a datagrid table where the user would click in to see the detail of each record. They would need to have multiple records open at any given time.
I look forward to all the advice I can get.
EDIT 2010/04/22 2:47 PM EST
What is your audience? Internal clients within an intranet
How complex are the interactions you expect to implement? not very... displaying data from SQL server to UI. Allow user updates to said data. Typically just one user modifying a record.
Do you require near real-time data updates? no
How often do you expect to update the application after the first release? twice/year
Do you expect a well-defined set of client platforms? Yes, windows xp environment, potentially upgrading to Win7. Currently in IE.6 moving to IE7 or 8 within a couple of months.
Do users need access from anywhere? No, just from their PC.
What would be wrong about building a simple ASP.Net application in VB.Net using Gridviews for allowing the data access and manipulation? Seems like a simple ADO.Net trial application if you aren't familiar with it in the beginning you will be by the end. CRUD applications are pretty common so it shouldn't be too hard to build it and then refine it as more requirements become apparent.
Sounds like you need to use a web-based solution--this eliminates alot of your potential distribution woes with multiple users. You could use silverlight, but if you are locked into SSRS, this might not be the way to go.
My company is currently undergoing efforts to migrate from Informix to Oracle 10g. We don't want to use any form of oracle forms but instead want to create Java web based forms that interact with the Oracle db (these will replace our Informix forms). Some of the forms also need to implement some JNI to our underlying C code libraries.
What's the best way to tackle this - ie, using JSF?
Opinions welcome!
Karen
There really is no "Best Way".. look at the tools available and assess for yourself.
Without knowing the scope of your project, I'd personally look at something like Grails
#KNewton Right now, my company is undergoing on a similar project.
Which java framework did you use to re-write your oracle forms application?
The examples that Microsoft's Patterns and Practices provides are quite helpful:
about a half-dozen simpler QuickStarts which touch on specific issues
the StockTrader reference implementation, which is a fairly rounded application
but it lacks a more useful base application that reads and writes to a data source (XML or database), allowing users to login, edit data, logout, etc. (something like what ASP.NET MVC comes with).
Since Prism applications can get quite complex and lengthy (the StockTrader example is almost 300 files without tests), it would be helpful to have an application that takes care of the CRUD bulk that everyone needs to build for most apps anyway.
Does anyone know of any data-editing Prism example apps out there?
Here (http://petedoesstuff.net/Blog/?p=79) you'll find a bunch of links to the samples of using the Prism.
Particularly, LateNight (http://code.google.com/p/cwpfsamples/) may be what you need. It has login screen and data editing functions.
Its feedback I've seen a lot of. I'll pass this onto the Team and see if we can get some more examples put online around this space.
I'm currently writing my own demo app now, so i'll also try and put that online via my blog.
Scott Barnes - Rich Platforms Product Manager - Microsoft.
The reason data access was left out of the Prism RI is because it is largely irrelevant to Prism. I would think you're better off looking at something like DinnerNow for those kind of things.
I am in the process of designing a .net windows forms application that uses metadata to drive the UI. Apart from finding http://msdn.microsoft.com/en-us/library/ms954610.aspx, I have nothing much to look forward to. Anyone here worked on metadata driven User interfaces? What are the implications of following this methodology and any pointers would be greatly helpful.
The most obvious answer would be that Microsoft have themselves embraced this concept through their use of Xaml in Windows Presentation Foundation which replaces WinForms (to an extent).
If you want to stick to a WinForms, you may want to consider MyXaml which is kind of a homage to Xaml for WinForms!
You may want to check out Evolutility CRUD framework. It is an open source metadata driven framework for CRUD generating all UI at run-time.
It comes w/ source code (in C# and JS) and many samples.
http://www.evolutility.org
You may try this with HTA. Sometime back I created a metadata driven application using HTA and XML. I created XAML like structure and HTA-VBScript code to parse this structure and render diffent types of UI elements along with validations.
Check the Andromeda project out, which does so extensively. Too bad the stack isn´t .NET friendly (PHP, Postgres, Perl).