For most people, the Mac's OS X is all about the graphical user interface. But system administrators and power users know that the Mac's command-line interface can be a powerful time saver and, in. With macOS file sharing, you can allow up to ten users to connect to your Mac at once using File Sharing. If you need to allow more than ten computers to connect to your Mac at once, use macOS Server, which is available in the App Store. The Bitmap Image Editor for Mac OS X. Home Screenshots Downloads Contribute Blog SourceForge.net Logo Support This. Paintbrush 2.1.2.
. Is the next big thing? We’ve been toying with it for a while now, and we tend to think that it is. In fact, we predict that there will be a for developers skilled in this technology in 2018.
But how does it differ from the.NET Framework, and what do you need to know to use them effectively? In this post, we’ll explain the main differences and offer some guidance on how to make the best use of each. Historically, the.NET Framework has only worked on Windows devices. The Xamarin and Mono projects worked to bring.NET to mobile devices, macOS, and Linux.NET Core provides a standard base library that can now be used across Windows, Linux, macOS, and mobile devices (via Xamarin). There are four major components of.NET architecture:. (CLS) defines how objects are implemented so they work everywhere.NET works. CLS is a subset of Common Type System (CTS) — which sets a common way to describe all types.
(FCL) is a standard library that collects reusable classes, interfaces, and value types. (CLR) is the virtual machine that runs the framework and manages the execution of.NET programs. Tools such as to create standalone applications, interactive websites, web applications and web services.NET Core vs.NET Framework Microsoft maintains both runtimes for building applications with.NET, and they share many of the same APIs. This shared API is what is called the.NETStandard. Image via Developers use the.NET framework to create Windows desktop applications and server based applications. This includes ASP.NET web applications.NET Core is used to create server applications that run on Windows, Linux and Mac. It does not currently support creating desktop applications with a user interface.
Developers can write applications and libraries in VB.NET, C# and F# in both runtimes. Similar to other C-styled languages. The learning curve should not be a problem for developers already working with C and similar languages. That also uses object oriented programming. Visual Basic is available in.NET Framework with limited.NET Core support with. Developers Should Use.NET Core When A cross-platform and open-source framework, it can be used to develop applications on any platform.
Often it is used for cloud applications or refactoring large enterprise applications into microservices. Screenshot via So when should you use it? When. There are cross-platform needs. Use it when the application needs to run across multiple platforms such as Windows, Linux and macOS. Those operating systems are supported as development workstations (and the list of is growing):.
Visual Studio can be used on Windows with a new limited version. Visual Studio Code can be used on Windows, Linux and macOS.
The command line can be used on all supported platforms. Microservices are being used., a form of service-oriented architecture, are software applications comprised of small, modular business services. Each service can run a unique process, be deployed independently and be created in different programming applications.NET Core allows a mix of technologies, is lightweight and can be minimized for each microservice. It is scalable as new microservices are added. When Docker containers are being used.
Containers and microservices architecture often are used together. Because it is lightweight and modular,.NET Core works very well with containers. Server apps can be deployed cross-platform to Docker containers.NET Framework can be used for containers, but the image size is larger. If you have high performance and scalable system needs. Microsoft recommends running.NET Core with ASP.NET Core for the best performance and scale. This becomes important when hundreds of microservices could be used.
A lower number of servers and virtual machines should be needed. The efficiency and scalability gained could translate to a better user experience in addition to cost savings. If you are running multiple.NET versions side-by-side. To install applications with dependencies on different versions of frameworks in.NET, developers need to use.NET Core. Multiple services can be run on the same server with different versions of.NET. If you want command line interface (CLI) control.
Some developers prefer working in lightweight editors and command line control.NET Core has a CLI for all supported platforms. It requires minimal installation on production machines. And there still is the opportunity to switch to an IDE such as Visual Studio IDE.
When Not to Use.NET Core One issue is that it does not have some.NET features or support all libraries and extensions. There are a few situations in which it may not (currently) be the best option, although, with continued development, it will likely be workable for most use cases eventually. Consider the following scenarios:.
Windows Forms and WPF applications are not supported. You still have to use mono to make a.NET desktop application for macOS.
ASP.NET WebForms don’t exist. Microsoft has plans to port them to ASP.NET Core either. You need to create a WCF service.NET Core does not currently support WCF. Instead, you would need to make a REST API with ASP.NET Core MVC. Missing 3rd party library support.NET Core 2.0 provides a compatibility shim between.NET Framework and.NET Core. But, you may still have issues with compatibility if the class library uses any.NET Framework APIs that are not supported.
Although, this will help bridge a lot of class libraries to.NET Core. Missing.NET Framework features. Some.NET Framework functionality is still missing in.NET Core.
For example, Entity Framework Core is not the exact same as Entity Framework v6. You need to access Windows specific APIs. If your application needs to work with the Windows Registry, WMI, or other Windows specific APIs, it won’t work with.NET Core. It is designed to be more sandboxed away from the OS. Partial support for VB.NET and F#.
Microsoft and the community continue to work on this but it isn’t 100% yet. SignalR is not supported. It is planned for.NET Core 2.1 and is coming soon. Developers Should Use.NET Framework When.NET Framework is what is distributed with Windows. Generally, it is used to build desktop Windows apps and large-scale enterprise applications using.NET workflow and data connection tools. It provides services that include:. Memory management.
Type and memory safety. Security. Networking.
Application deployment. Data structures.
APIs It can be used with Docker and Windows Containers, and using it is most feasible when. It is already being used.
Instead of migrating, extend the application. For example, developers can write a new web service in ASP.NET Core.
You’re using third-party libraries or NuGet packages not available in.NET Core. While.NET Core is becoming more widely used, you’ll need to use the.NET Framework if you’re working with.NET Framework libraries that aren’t compatible. For.NET and other Microsoft development platforms. The NuGet ecosystem includes client tools that provide the ability to produce and consume packages. It also has a central package repository for package authors and consumers. It is available as a Visual Studio extension. You’re using technologies not yet available in.NET Core. It does not support all.NET Framework technologies.
When Not to Run.NET Framework There are also a few situations in which you shouldn’t run the.NET Framework, including when:. Multiple OS platforms are required. High performance and scalability are needed.
If.NET Core works. Open source framework is required How to Port from.NET Framework to.NET Core Follow these steps: 1. Analyze Third Party Dependencies This involves more than just knowing what the third party dependencies are. There needs to be an understanding of how the app depends on those third party dependencies if they run on.NET Core, and what needs to be if they do not run. Because it usually says on NuGet’s website plus the package has a set of folders for each platform. You can also look under Dependencies on the page for the package and look for a folder or entry with any of the following names: netstandard1.0 netstandard1.1 netstandard1.2 netstandard1.3 netstandard1.4 netstandard1.5 netstandard1.6 netcoreapp1.0 portable-net45-win8 portable-win8-wpa8 portable-net451-win81 portable-net45-win8-wpa8-wpa81 If the dependencies are not NuGet packages, the can check the portability of the dependency. New with.NET Core 2.0, a compatibility shim can make it possible to reference.NET Framework packages that have not been switched to use.NET Standard.
Be sure to thoroughly test these packages as they may still have issues if they use unsupported APIs. Target the.NET Standard Library The.NET Standard library is intended to be available on all.NET runtimes, so is the best way to build a cross-platform class library. There are multiple versions to consider that are available to varying degrees across eight platforms. If a project targets a lower version, it cannot reference a project that targets a higher version. Pick the lowest possible.NET Standard version to use across all projects. Below is a chart with each.NET Standard version that shows the specific areas they run on: Screenshot via 3. Retarget Projects All the projects to be ported need to be.
This will ensure API alternatives for.NET Framework specific targets can be used for non-supported APIs. This is done easily in Visual Studio with a “Target Framework” command and recompiling the projects. Port Tests Code Porting code to.NET Core is a significant change; testing is strongly encouraged. Such as:. With tools like xUnit, it’s possible to use templates and edit them to write.NET Core tests. Here’s an of an edited.csproj file: netcoreapp1.1 5. Execute the Porting Plan depends on how the framework is structured.
But breaking the code base into steps and layers should work well. Identify the “base” of the library. This base could be the data models or classes and methods that everything else needs to use. Copy the base into a new.NET Core project. Make any changes needed to compile the code.
Copy another layer of code and repeat. Then There is Xamarin Xamarin may sound like a new prescription medication, but is a platform for developing apps that run on iOS, Android or Windows Phone devices.
Xamarin is written in C# and included in all editions of Visual Studio. Microsoft promises that Xamarin is the best way to create a user interface (UI) and optimize performance in apps in multiple platforms. This is important during an era when apps need to run on at least iOS and Android devices. Xamarin and uses a single technology stack to decrease time to market and engineering costs. But user interface intensive apps may need more platform-specific coding. The amount of code sharing and savings then decreases.
More.NET Platforms on.NET Standards In addition to.NET Framework,.NET Core and Xamarin,.NET Standards also supports the following platforms:. — An open-source.NET created before Xamarin and Microsoft collaborated. It is based on the ECMA standards for C# and the Common Language Infrastructure. In addition to C#, developers can use VB 8, Java, Python, Ruby, Eiffel, F# and Oxygene. — Software platform created by Microsoft to help develop apps that run on Windows 10, Windows 10 Mobile, Xbox One, IoT and Hololens devices. Developers can use C, C#, VB.NET, and XAML. Windows — versions 8.0 and 8.1 are supported.
— Windows Phone was primarily developed for the consumer market and replaced by Windows 10 Mobile in 2015. — The deprecated application framework was designed to run internet applications and compete with Adobe Flash.
All these platforms will implement. That replaces portable class libraries (PCLs). This ensures code sharing across desktop applications, mobile apps & games, and cloud services.
Additional Resources and Tutorials For more information, including helpful tutorials, visit the following resources:. (Github). (Microsoft).
(Microsoft). (JavaCodeGeeks.com). (Stackify). (Stackify). (Auth0).
Nbg12 wrote: we are using a GSM7352Sv2 48 Port Switch. Does somebody know who we can get our ports of the switch which are in usage and the mac address of the PC who are on the Port at the moment?
We know we can get these information via SNMP Call and for each information there are OID numbers from MIB Tables, but we've got big problems to get the correct OID nr. To read get these information what we need? You can get the MAC address table by issuing the command 'show mac-addr-table' via the CLI. Check page 544 of the CLI manual of GSM7352Sv2. Sasword wrote: You can get the MAC address table by issuing the command 'show mac-addr-table' via the CLI. Check page 544 of the CLI manual of GSM7352Sv2: thank you so much for this information, I didn't know that there is a CLI to get several information of a switch.
But I never used telnet, so this is not possible for me (try to watch some tutorials haha) and via SSH there is the problem that we are using a completely dif. Port instead of 22 so let me think about that way a lil bit, if you have any idea - pls let me know! Txh for your help, but we have 20 netgear switches and each switch does have the Firmware 8.x.x.
And we are getting the MAC addresses now with a snmpwalk command with the OID: 1.3.6.1.2.1.17.7.1.2.2 But the problem is, that we get on the port 3 many many mac addresses who are included in our internal network but 100% not on the Port 3 because on Port 3 we only have a normal Windows PC Machine running. So I think something is wrong with the Q-BRIDGE MIB or with the OID: 1.3.6.1.2.1.17.7.1.2.2:confused: any ideas?