Goodmorning,
is there anyone that has already developed something about how to insert, update or select chat conversation in asp.net with MySql database?
I found SqlDependency class open source, then MySqlDependency that is like 100$ each year.
Still nothing open source for Mysql db?
I tried to develop something, my idea was just, insert or update the db when the client leave or change the page but there is nothing about event on change url domain with javascript.
I never thought that it could be so difficult to develop a chat.
Can some good people help posting some code about this?
Thank you very much
it's actually very easy if you get the concept. you can check the video from here: https://www.youtube.com/watch?v=8Fxm_54j-h8 and also you can find the code in the description.
although it's written on Entity Framework core with SQL server provider. you can just change the provider for MySQL and it'll work.
Related
I'm fairly new to programming and I'm studying App development with Ionic and using Laravel as a backend. So far I have created a simple system with sign up and login of users and creation of "events" by the users. I have made the relation between the users and events as the app will need to know which user created an event, and the participants of such event.
Now, I was wondering about adding a messaging system between users and obviously push notifications and stuff and came across Firebase. I've read about it before, but haven't really used it so I'm not quite familiar with it.
My question is, is it possible or even recommended that I use both MySQL and Firebase in my app or should I just stick to one? I've read about Websockets if I stick with Laravel, but on the other hand, Firebase also handles user login and registration in case I want to move to Firebase completely. I'm having some technical questions, such as:
if I'm using both MySQL and Firebase in my app, how would I connect the user that was registered with an ID and a username stored in my MySQL to Firebase, which will need to know which user has sent a message to another one? Can that be done, or recommended?
Should I just stick with just one for my use case (MySQL or Firebase, instead of both)?
I have researched about use cases similar to mine and couldn't find anything, if you guys have come across such situation, could you recommend any materials? It would be much appreciated!
Thanks a lot everyone! I hope my questions were clear, if you need more details, please let me know!
If you decide to use Firebase, it comes with a built-in authentication system so you wouldn't need a MySQL database or your own server.
If you decide to use both anyways (if you have a good reason to do so), you would have to handle all the logic for copying the authenticated user id over to firebase (and validating access) on your own server. If you don't need to do that just keep it simple: Firebase or your own server + MySQL.
I am working on an app in visual c++ which requires data to be accessed from a database which can be edited so that every time there is a modification to the data I do not have to resend the app as it will automatically update, it is also required that this is a desktop app.
I am currently using MySql however for this to run constantly I will be needing a server which for a single simple app wont really be worth purchasing, so I started thinking of alternative methods and thought to myself there must be some method of reading directly from a website or online database, am I correct in thinking this? If so could someone please explain how I would achieve this?
Also, I have purchased phpmyadmin in the past so if there is any way I could connect my visual c++ app to a database from this then that would be great.
EDIT: Note, this app relies almost entirely on the database as it is just 3 combo box's and one text field all of that values for which come from the database.
The following response is assuming that by online you mean on the web.
You cannot exactly 'connect' to an online database with C++ (or anything outside of that server hosting the database).
What I would do is create some PHP API's that you can POST to with libcurl via C++. You can both send and receive data this way.
I have an ipad app that has a database. I created a web-service on my mac mini using php,apache,mysql.
What I would like to do is sync the database on the ipad with the one I have on the remote computer maybe once everyday. Can someone please provide me with an example,sample code or even advice on how to go about doing this?
I would need more info to give you an accurate answer. What kind of database are you using ?
I can only give you a general answer since you really don't provide a lot of info,
What you would usually do when you need to send/request data from iOS to a Web Service, is send an HTTP Request using NSURLConnection or other wrapper classes such as AFNetwork.
Also the term "syncing" is quite a big subject, what do you mean by syncing? Always making sure the data on the iOS Database is the same as the web service database? If so you could have the client save some sort of E-Tag (last modified date), and ask the server only for data from that day onwards. Or the other way around, depends on the type of syncing you wish to accomplish.
I hope some of this makes sense for you, since your question was really general, my answer features a bit of general info , but might be helpful for you :)
I am really confused on how to get data in and out of an android app from the internet.
I imagined that I would store information in the mysql db on the server I already have set up. But from what I have read, I would need some type of in-between web service to make queries with data sent from the app.
Can anybody toss me some tips on how to get something like this started.
Or, if you know of a better way, let me know about it.
This question has been asked several times, for example here: How to get from a MySql server to an Android app?.
Bottom line - you don't connect directly. You have something on your server (like RESTful) that you connect with via HTTP.
Try this method out. I will be using this method for the current project i am working on.
You basically create a php script on a server and use http posts to send the data to the script, read the tutorial linked below for better explanation.
mysql/android tutorial
This seems to be the hardest thing to get help with - there are no books, no useful google results, and borland's own help facilities are far to complicated for me to isolate the answers I need.
I want to make a connection to an already existing microsoft access database using builder.
I want to be able add/delete/read the records. that's all.
Or failing that. how do I create a simple database/table using builder. It would be ideal if I had an application that could create a table if it didn't already exist, then use that table from that point onwards.
I want to avoid creating DSNs. I want direct access to the database from builder.
If you could point me in the direction of a good online tutorial for this that would be a start. If you could actually provide the help yourself (ie tell me how to do it, rather than show me an article) that would be great and I'd be very greatful.
in portuguese:
http://www.caloni.com.br/blog/archives/banco-de-dados-no-c-builder
see if fits your question
Have you looked at the VCL's ADO components yet? TADOConnection, TADOCommand, etc.