To debug in VS enable Source Server support under Tools/Options/Debugging. Library of ASP.NET web forms extensions, embedded resource hosting and HTTP Module for implementing role-based security. To work with the code examples provided in this article, you should have Visual Studio 2019 installed in your system.
If you want to script to be executed, then you can use the @html.raw method to print out the unencoded string as shown below. The @ in the email address is correctly identifies by the Razor engine and does not to treat the @ as a code delimiter. In the following example, the code @greeting, @DateTime.Now, @WeekDay are treated as Implicit Razor expressions.
Building the app
Here is a solution that is encapsulated for usage outside of an mvc app. It does require package references to aspnet core and mvc, but those are easy to add to a service or console application. RenderToStringAsync is the method to call to render a view to a string. Thanks to server-side rendering (SSR), the server generates the HTML code in response to a request from the browser/client. The big benefit with SSR is that performance will dramatically increase, as there’s no WebAssembly object to be downloaded when loading the app. While the component-based approach might feel different at first, once we get the hang of it, we see that a lot of code duplication from the past can now be moved into a reusable Blazor component.
Any HTML Elements inside the Razor code block is correctly identified by the Razor engine as shown below. To use a double quotation mark inside the string, use a verbatim string literal. The verbatim string is prefixed with the @ symbol and repeat the quotation mark. The image below shows how the Razor markup is used inside an HTML page and the Intellisense support from the Visual Studio.
Space is not allowed in the Code expression, as it is used to identify the end of the expression. The expressions are evaluated by the Razor View https://remotemode.net/ engine and the result is inserted in their place. Implicit Razor expressions start with @ followed by C# code like the one mentioned above.
Each component is a stand-alone piece of a UI-element, typically formed by a combination of HTML code for the page layout, and a snippet of C# code for the logic and dynamic content. Blazor WebAssembly takes a totally different approach, allowing developers to run .NET code directly in the browser using WebAssembly (aka Wasm), a binary instruction format for web applications. This model allows Blazor to run the execution of C# code on the client side, reducing the need for constant communication with the server.
Templating using new RazorEngine API
For embedded resource, the key is the namespace of the project where the template exists combined with the template’s file name. Use Razor to build templates from Files / EmbeddedResources / Strings / Database or your custom source outside of ASP.NET MVC. No redundant dependencies and workarounds in pair with excellent performance and .NET Standard 2.0 and .NET Core 3.0 support. Provides renderers based on the Razor templating engine that can be used to render websites in projects running on the GenHTTP webserver.
- Technologies like ASP.NET Web Forms provide rich controls and abstractions, making it easier to build complex web applications.
- The library provides a relatively simple wrapper around Razor with tools like caching, template management, and caching.
- Library of ASP.NET web forms extensions, embedded resource hosting and HTTP Module for implementing role-based security.
- Following these steps will create a new ASP.NET Core MVC 5 project in Visual Studio 2019.
- In the following example, the code @greeting, @DateTime.Now, @WeekDay are treated as Implicit Razor expressions.
- To test it just create a .NET framework or .NET core console app, paste it, add the nugets, and create the hello.txt file by hand (it must be located aside the executables).
- So the benefit you get from a static type will most likely not compensate the additional compile time.
These expressions are evaluated by the Razor View Engine and written to the response. Now, go to the Models Folder and create a new class Customer.cs. The View Engine is responsible for producing an HTML response when invoked by the Controller Action method.
What is View Engine
Building on @turdus-merula’s answer, I wanted the temp files to be cleaned up when the default AppDomain is unloaded. I disabled the temp file locking in the config, which allows the temp folder to be deleted. With a passion for cloud Architecture, Devops and Security, Peter always has a story to share on how to optimize your asp net razor tutorial enterprise-ready cloud workloads. This issue was the main reason behind Microsoft’s .NET Blazor framework. It actually started as a personal side-project of Steven Sanderson, Principal Software Engineering Lead at Microsoft in 2017, which evolved into server-side Blazor mid 2019, and client-side (WebAssembly) in 2020.