I have this project where i have a django server which is running on a machine, which is used to communicate with other machines on the network.
Now i also have another application written in c# on the same machine which is used to monitor state of certain hardware.
I want to know if there is a way to write a http request/response system in the c# application where i can interface it with the django server such that when django makes a request to the c# application it reads certain values and returns a response to Django.
Can someone please tell me how to write this http server on the c# application or give me resources where i can look this up.
Thanks
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Hi i have a C# WinForms app. I wrote essential methods on C#. But I need a login form and its not safe since apps like dotpeek can inspect the source code and hack it. Can i communicate with another application that is written in another language (java,c,python etc). I need to send input data from WinForms C# to another app then it should connect to database and check if login succesfull then return a value back to C# WinForms app. Is that possible, how can i implement that? I dont want to write all application in another language since C# has good methods to process images/pixels and gui support with very small memory usage.
I got the point you are trying to make.
One thing to admit is that you can't completely avoid decompiling of apps. C# or C++, no matter anything can be reverse engineered.
If you still need it, a comparatively safer approach is to not put the checking app at the client's machine. Create an API and host the database on a server.
Then initiate just an Http Request to the server from your Windows Forms app.
Then you have the full control of Login API and database. Many applications use OAuth similar to this. Another examples are apps verify it's license using an online API.
You can get a LightSail Windows server in around $10 a month if you want to setup. Try exploring
Your concern is not baseless. C#, or for that matter, any .net language running on the CLR, will be easier to inspect than a language like C or C++.
Having said that, no app will be completely secure, and communicating between apps has its own problems. How does one app verify the other? etc. You can create a web service that would communicate with the database (and communicate with the web service using HTTP or WCF) which would mean your app wouldn't have direct access to the database, but that would only protect the database from your app, it would still allow someone to inspect your app and use the web service, impersonating your app. Also, you would need to host the web service on some web hosting service, and then you would have to trust that service to not inspect your app...
You can reduce the problem by storing the password etc. as byte arrays, but regardless of what you do, I don't know of a way to completely safeguard your app. If a malicious app/actor is on your computer they can inspect your app.
As for your question itself - look into WCF or named pipes (includes a simple example).
I'm making a small web application that uses PHP and mySQL. I'm planning to make a little C# application that uses a WebBrowser component to access the website. However, in the event that the server is unavailable for some reason, I would still like the customers to be able to use it.
Is there a relatively easy way to integrate a small PHP and SQL engine within my C# application, such as if the server is unavailable the application can launch it's own server and log in at localhost? Or would I actually have to code a whole PHP and SQL server?
EDIT:
Just to clarify I bit. My question is actually: Is there a way, through third party plugins or anything else, a way to make my C# application to act both as a PHP server and an SQL server in the event that the remote server is not accessible. IE: if server is inaccessible, start own server and connect to it instead. I know I could install and launch XAMPP for example but I don't want my users to have to launch more than one application as they will most likely be computer illiterate.
I've been developing an application that interfaces with PowerShell for Windows. So far, everything has worked great. However, it connects to MySQL directly (I guess that's not good practice?) and also connects directly to the local PowerShell instance. My goal for the future, however is to make it cross platform. I currently purchased a book on cross platform development (mono based I believe) to get a handle on have a best practice common services layer for some basic things. However, I can't get my head around how I'll do that with PowerShell.
My question is, is there a way to host a server somewhere that accepts Powershell connections remotely via web requests from multiple connections at once? Otherwise, I don't see how I can port such an application to Android and the likes.
Also, I wouldn't be opposed to some basic links for best practices on web requests and the likes.
Have a look at PowerShell Web Access.
Overview
C# File - Users PC
PHP Server - Hosts Webpages for application
Server and Users PC on local network
I have a c# file that reads weight from a USB scale. How would I trigger this file to run so it feeds into my program. The problem is I am using PHP to host our webpage/application so its not running client side and the scale is not hooked up to the server but to the clients PC.
The C# script would have to be on the clients in order to read the scale so how would I trigger this to happen?
Is this even possible and if not what would be a better way?
Important Edit
I was able to run the Scale Script (C#) when I wanted by having PHP and C# use TCP sockets.
The C# would listen for PHP to send something and when it did it would read the scale and send this information back to PHP becuase PHP was listening for a response. Mixed in with a little Ajax and it updates in the web browser.
Gave Chris Credit because he was the most helpful with answering my questions
It sounds like what you really want is for the client application to submit the data to the website itself, and the most suitable approach is probably to expose a web service from your server.
This service should accept weight data, along with some sort of customer key or whatever, to correlate the records correctly on the server side. I've never created a web service in PHP personally, so I can't give any advice on the implementation of that, but it is fairly trivial to hook a C# client app up to a web service once you've exposed its metadata (assuming you use SOAP).
you can't start C# application from a web page in a way that'll work in every browser every time. BUT, you can have some workarounds:
Use ActiveX component that read the data in the client and upload it to the server. the biggest cons is that it'll only work in Internet Explorer
use Silverlight client application that runs on elevated mode (v4) and upload the data to your server.
refer your clients to download application (the C# application you wrote about) and run it - this application will upload the data to your server.
hope this helps.
C# isn't a scripting language, it's a language that compiles into executable binaries or libraries. You won't be able to execute C# code on the client's computer via a website because C# code needs to be compiled before it can run.
Presumably what you really want is for your compiled C# binary to be executed on the client's machine via your website. You won't be able to easily do that. There are a lot of security measures in place to prevent browsers from running programs on your computer. There may be ways to hack around these security measures by using plugins (such as ActiveX), but it's not something that will be a one-liner.
Edit: I think you need to step back and think about what you're trying to do in a broad sense. You're trying to create a website that can read information from a user's USB port. This is the type of thing that browsers are designed to prevent, and for good reason. I wouldn't want random websites to be able to access peripheral hardware without my explicit permission. If you want this website to function the way you're expecting, you're going to have to seriously think about the security implications. You'll need some kind of client-side code (ActiveX, Silverlight, ...), and the user will need to explicitly give permission to for this all to happen. It won't be easy, and it won't be automatic. And I'm damn glad that's true.
I have designed a desktop application in c# and web application in php. my desktop application requests data by calling php file and some portion of desktop application showing web forms using web browser control. both process takes too much time. is there any other method speed up this two processes
I would write your PHP app so that it has a RESTful API available that the C# application can connect to. In this way, you can use a technology like WCF to communicate to your web-based API and use C# in your desktop app to present and work with the data being managed in the PHP app.
You're looking at going back about 15 years to the client-server architectures... not a bad thing, but all of the lessons we learned then are going to be applicable to you now.
You might could implement something with Adobe AIR.
Adobe Air