What is the standard convention to save data in textboxes and other form data to be loaded the next time the program is opened?
I personally do not know of any convention, however you could look into the following methods:
Using the registry: http://radio-weblogs.com/0111551/stories/2002/10/14/registryRwInC.html
Using profile strings: http://dotnet-snippets.com/dns/c-read-and-write-ini-files-SID574.aspx
Not sure of the standard convention, or if there is one, but saving to a text file would be a simple-to-implement solution.
It depends on the kind of data that you are trying to save. If this is a relatively small amount of user specific data associated with their user preferences, then user settings are the way to go.
If this is large amount of application data (for example like an entire address book), then you are probably better off writing to an external file or database in whatever format suits your needs.
You should be looking at Windows Forms data binding - that is the best way to save data from and reload data into a Windows Forms application. Once you have set up your form controls for data binding, you have a choice of where to store the data, as explained here.
Related
Is there another way to view the profiling results of MiniProfiler (I'm specifically interested in EF5 version)?
Every tutorial that I've seen uses MiniProfiler.RenderIncludes(); but since my MVC app mostly returns JSON, that is not an option for me.
Is there a way to write results to file or something like that?
You can read and write results to just about anywhere by changing the MiniProfiler.Settings.Storage to a different IStorage implementation from the default (which stores to http cache). If you wanted to, this could store to and read from a file pretty easily (you would have to write your own custom implementation for that).
The files served by RenderIncludes are the html templates for displaying the results and the script to retrieve the results from the server and render them on the client (all found here). But you are by no means obliged to use this mechanism. If you want to write your own logic for retrieving and displaying results, you should base this off of the logic found in MiniProfilerHandler.GetSingleProfilerResult. This function roughly performs the following (putting in the siginificant steps for your purposes):
Gets Id of next results to retrieve (through MiniProfiler.Settings.Storage.List())
Retrieves the actual results (MiniProfiler.Settings.Storage.Load(id))
Marks the results as viewed so that they wont be retrieved again (MiniProfiler.Settings.Storage.SetViewed(user, id))
Converts these to ResultsJson and returns it
With access to MiniProfiler.Settings.Storage, you should be able to retrieve, serve and consume the profile results in any way that you want. And if you are interested in using the RenderIncludes engine but want to mess around with the html/js being served, you can provide your own custom ui templates that will replace the default behavior.
I have an ASP.NET MVC3 application which has multilingual support. Almost every word has multilingual support and at each page request I get all the words in the currently selected language from the database into a List and I use it for each Word: I hold MeaningID for each element and print out the matched one from the List. Costly approach, but better than reaching to database for every Word.
Still, I wonder if there's a data structure I can use globally throughout the project, which is only loaded from the database when the user changes the selected language. Is there a session like list structure can I use for such a purpose?
EDIT: To make things clearer I'm posting my database tables.
--Word-- --WordBase-- --Language--
ID ID ID
Text Text Name
BaseID
LanguageID
As it's seen, WordBases are meanings that Words depend on by a Language. Example data is:
--Word-- --Base-- --Language--
1;Hallo;1;1 1;Hello 1-Deutsch
2;Hello;1;2 2;Good 2-English
3;Gut; 2;1
4;Good; 2;2
Your web app is like a dictionary? I mean... your "words" are the data of your application... or are you talking about internationalization?
If it is internationalization, I think there are better ways to do it... using the tools built in. Check this: http://afana.me/post/aspnet-mvc-internationalization.aspx
If the translatable data is too large... may be you could have an hybrid approach... keeping tokens in database... and translation in resource files. Then, caching would be useful, specially if your data doesn't change very often (you can set caching for 30min... and for that time you avoid SQL queries to retrieve words in every request).
You should cache this using Cache. Then, you can manage the Cache to hold the information during the user session or by time expiration.
Take a look here: Walkthrough: Caching Application Data in ASP.NET.
I need to build an application wherein the admin must be able to define forms for data entry. The data to be entered is unknown to me. But the system will need to be able to support all the possible form fields (minus hidden fields, I suppose). So text areas, text fields, radios (with ability to specify what the options are), checkboxes, etc. Also, it needs to be able to support line item entries (similar to EE’s Matrix plugin).
Obviously, I don’t want to try to build this from the ground up. Are there any libraries I can use in CI to make life easier for me?
If none exist, what are some database design patterns I should consider for such a problem?
The best database-design for this is the Entity-Attribute-Value Model. For use with a FORM, essentially your form is the ENTITY, the Attribute will have a type (used for deciding how input will be captured, and data interpreted). Make sure that you index properly.
Remember that you'll only need to data to change the form, don't read from this model everytime you need to show a form. Store a flat file (.json is handy) of the finished form and read that when displaying the form.
i'm developing a desktop application, not web.
The software environment is Windows and VB10.
In my user interface I have a browser where I want to show a map, issuing an address like http://maps.google.com/maps?q= and then I indicate a URL where I have put a KML file with my data.
The problem is: is it possible to filter the data in the KML file in order to show only a subset of them ?
Basically you have two options:
Pass parameters to a service which generates your filtered KML on the fly.
Do it in JavaScript in your browser interface.
Based on your question, I am going to assume option one is out. For option two there are tons of examples on the web, but basically you need to parse the KML yourself and write JavaScript code to handle it however it needs to be done to achieve your filtering, you cannot pass the KML URL to google maps directly and achieve any of this behaviour.
Possibly useful example: http://www.gpsvisualizer.com/examples/google_folders.html
UPDATE
Based on conversation in the comments:
The only other thing I can think of is to create your own map page with the JavaScript to do what you want on it (like http://gpsvisualizer.com/examples/google_folders.html linked above) and then embedding it in your app instead of the google map. Essentially encapsulating the features you want. So instead of maps.google.com/maps?q= in your app you have myMapURL.com/MyMap?querystring which is your google maps wrapper with the desired filtering. Otherwise I think you are out of luck based on your current setup.
everyone!
At first, I made a single form with large amount of elements: text fields, text areas and so on. When I had got the form ready, I understood that it is not so user-friendly to have such a large form to be filled-in in a row. I don't want to use the "step" system (step 1 -> step 2 -> ... -> step n), because I want for the end-user to be able to have this form filled in any order (+ User would be able to see beforehead what forms he would need to fill), so I divided the form into the several tabs.
The idea is following: once user has filled the form in some tab, he hits the "Save" button and proceeds to the next one (in arbitrary order of his choice).
The thing I wanted to know - what would be the best approach to store the intermediate data ? Should I have some hidden input for each of the tab forms with tab-id to be passed to the model, so that at each 'step' only tab relevant data was validated and stored in DB. Or, maybe, I should have a session[:object] that would contain the current object and at the very end I would store it in DB and erase from the session.
Can this idea be realised ?
Thanks in advance! :)
there's a gem called wicked, it allows you create wizards in a very simple way, check it out
I'm not a ruby ninja, but in other languages (like php) we usually use sessions to do this. Why not to do this on rails?
Also you can consider creating a table for "temporary storage rows" in addition of using sessions, so every time you change the page you could save the data to that table and, at the end, save them all to your main tables.
This is useful if you usually loose your session... you can related the temporary storage rows with the user and if he looses the session, you can restore his uncompleted forms from your database.
You could simply go the Railscasts 217 - Multistep form approach, which works fine.
However, this may not suit you as you may only store the data AFTER you have everything collected, and not step by step.
Another solution - as you mentioned - would be using e.g. jQuery tabs to create your form steps and building a little validation via AJAX / backbone.js before storing the actual record with all its data.