I want to activate the built-in web camera on a laptop for my application using .NET.
Is there any method that I can get this done in visual studio 2010?
The article here shows how you might do so using DirectShow and .NET
But ...
DirectShow on Windows Server 2008 (& R2) is fraught with problems so you might want to consider a different solution if this is the target OS
Touchless SDK (http://touchless.codeplex.com/releases/view/17986) contains a generic DLL for accessing webcams. Some of the cams, like the Toughbook, require accessing their own API. The Toughbook also has a downloadable SDK for their camera.
Are you talking about ASP.NET application? The answer is no unless you use some sort of activeX to be installed on the client browser.
Related
I have developed an extension for Internet Explorer in C# using Visual Studio .Net 4.5.2 Framework which I would like to port to Chrome & Edge (Chromium). It is quite a sophisticated extension that comprises 6 bespoke C# libraries I have developed which in turn use a number of system libraries including Microsoft.mshtml & System.Windows.Forms. I am hoping that building out as a WebAssembly will prove a viable solution.
I tried porting to .Net 5.0 using Visual Studio 2019 with Windows.Wasm and also using Mono.Wasm but these have simply thrown up a succession of compatibility challenges.
Can anyone recommend alternative approaches I should look at. I am considering trying Blazor (although this appears to be more orientated towards server-side than client-side), Ooui.Wasm and Uno platform.
Regards,
Howard
Blazor has two different types of projects, one is Blazor Server App, which is obviously server side, and another one is Blazor WebAssembly App, which can be used to develop client side browser extension.
I too, has the intention to create browser extension using Blazor and so I created a package to help others achieve the same too. Feel free to checkout my repo on GitHub on how to do it.
This package includes the ability to interact with the WebExtensions API for cross browser compatibility. A browser APi polyfill developed by Mozilla is also loaded so that you can use WebExtensions API in Chrome too.
However in your scenario, with Blazor it is not possible to use WinForms so you will have to convert them to Razor components.
I'm working as frontend developer in a company which uses asp.net for its website. I usually work on mac and I need to setup my localhost to work on the website, but something's wrong with the project. They provided me the folder with all the files (aspx, aspx.cs, dll etc), and I'm supposed to build my own solution file. Visual Studio for macOS doesn't give me the possibility to create an empty website project (VS for pc does), or maybe I'm selecting the wrong entry. What am I supposed to do?
I tried to select Empty ASP.NET Web project, but It doesn't work, all the vars and methods from aspx pages are not detected in aspx.cs. Same with Web Form. I can't set up anything and the solution is not working.
Everyone at the company uses Windows and they can't help me.
What I have to do to import it in the right way?
I'd like to use VS Code if it's possible. This is the first time with asp.net.
Thanks in advance
The main thing is that ASP.NET Web Forms is obsolete. I guess they stopped to support such type of solution a long time ago, only critical crushes. If you really want to use mac for ASP.NET Web Forms you should install Parallels VM with Windows 10 and Visual Studio on board.
I consider to use ASP.NET for developing a real-time appication that will be shown on a browser (IE, FF, Chrome etc.).
I'm wondering what are the system requirements for the server side where the application will be deployed?
Do I have to use IIS or I'm free to choose any web server I want? If IIS only - does it part of any Windows installation (so users do not have to pay extra charge for that?)
Do I have to install .NET Framework?
anything else?
Thank you!
You don't have to use IIS, you could use Apache, nginx, or xsp, but doing so means you have to use mono which is an open source version of the .NET framework, it's a couple of versions behind the real thing, you can find out more info here: http://www.mono-project.com/ASP.NET
If you choose to use Windows/IIS, then IIS is a feature of Windows that can be installed free of charge. You will need to install the .NET framework in order to host an ASP.NET web application, like IIS, the .NET framework and ASP.NET are features of Windows Server 2008 and above that can be installed/uninstalled whenever you like, for free.
I have a Windows application which contain a deployer.
Does the deployer itself contain a copy of the .NET framework?
Or do we have to explicitily install it?
When I check in the solution explorer, it shows the .NET framework under the deployer project under detected dependencies?
My Windows application connects to the Internet to validate for a registered user. Do I need to configure some port (or something like that) while I am installing it? Also how do I check which port my application uses to connect to the Internet?
Regarding #1, just as Xstahef said, you need to prerequisite the .NET framework.
You could put the .NET redistributable in your installer, and if you detect that the .NET runtime is not installed then prompt the user to run and install the .NET distributable contained in your installer (that's what we did some time ago, InstallShield provided this functionality for us). But this may not be recommendable: the .NET runtime has grown a lot in size (depending of the version you need to have in your client's machine), and many customers (at least the educated customers) won't trust installing the runtime from your installer. Besides, you may need to check with the legal department in your company before including a third-party component in your installation.
It depends on your deploy project (Visual Studio, InstallShield?). But commonly, you need to force the .NET installation (prerequisite option). By default, .NET is not contained in the deployment projects.
Here, it depends on the way you want to connect the Internet.
.NET runs in a VM, so you would need to require the framework be installed in order to actually run it. Much like you need to have Flash or Java for those respective mediums. Microsoft has redistributable packages for the .NET framework. So you could probably incorporate them into your installer. If you're targeting 1.1 or 2.0 most people probably won't need it.
So long as you are not trying to get in to the client machine then you shouldn't need anything special like UPnP to [attempt to] open a port if they are behind a NAT router.
Xenocode does allow to running such an application on an absolutely clean PC.
I'm coming from the open source world, and interested in giving ASP.NET a spin. But I'm having a little trouble separating the tools from the platform itself in regards to the licensing. I've downloaded Visual Web Developer 2008 Express, but not sure how different this is from one of the full-featured Visual Studio licenses -- and whether or not my Express license will prevent me from using all the features of ASP.NET.
Is a Visual Studio license just an IDE, or does it include pieces of .NET not available to the Express license? What about the other tools like IIS and SQL Server?
Thanks.
All of .net is available in the .net SDK, so in theory you will not need Visual Studio at all.
Now, there are some things that Express will not do. For example, the Database Designer is not very comprehensive and adding different remote databases is not or only very hardly possible. Still, in code you can connect to everything.
There is also no Remote Debugger, no support for creating Setup Files (well, that does not apply to ASP.net anyway), no real Publish Web Site Feature (although that can be added manually as it's just a Frontend for a SDK tool), no integrated Unit testing (and Microsoft loves to threaten people who add it), etc.
For a full comparison, see here:
Visual Studio 2008 Editions
But as said: Functionality of .net is all in the SDK, Visual Studio is just making it a bit easier to work with.
Visual Studio is just an IDE, you can do all your .NET development with the SDK and notepad if you choose. In fact there is something to be said for learning it that way so you understand better how the pieces fit together!
Microsoft have a version comparison matrix available so you can see exactly what is included each version.
IIS is a Windows component and considered part of the OS, there is nothing else to buy.
SQL Server comes in many flavours, SQL EXpress is free to use and whilst limited compared to the versions you pay for, it is more than enough to get started with ASP.Net
Visual Studio is the IDE and does not include the platform.
IIS and SQL Server are separate products. IIS is available as part of the windows install and the version is different depending on what version of Windows you are using.
SQL Server also has an express product which is not as full featured as the Full versions of SQL Server, yet it is still rather valuable and useful especially for learning purposes.
You can learn a lot from the free tutorials found on asp.net.
Visual Studio is just the IDE. You could theoretically create every file in Notepad and compile manually with just the .net framework.
IIS is an operating system feature, and SQL Server has different flavors with different capabilites.
SharpDevelop is a Open Source IDE for C# and VB.net