In the below example, the codes @greeting, @DateTime.Now, and @WeekDay are treated as Implicit Razor expressions. Space is not allowed in the Code expression, razor engine .net core as it is used to identify the end of the expression. The Razor View engine evaluates the expressions, and the result is inserted in their place.
- Because this value is being passed through from the public method CompileTemplate, the actual values for this will be defined in the host project, which we’ll come back to later.
- Let’s first use some common constructs such as the if, if else, and switch case statements.
Here is a class to get Nate’s answer working as a scoped service in an ASP.NET Core 2.0 project. There’s a working example for .NET Core 1.0 at aspnet/Entropy/samples/Mvc.RenderViewToString. https://remotemode.net/ Since this might change or go away, I’ll detail the approach I’m using in my own applications here.
Server side templating in .NET Core with #Razor
The Views must have the ability to process the data and generate a response. This is done using the Razor markup, which allows us to use C# code in an HTML file. We use Activator.CreateInstance to create a new object, specifying that we now use the Assembly that we previously compiled to do this job. It is this mechanism that ultimately extends the base model with all of the RazorEngine functionality. In this method, we’ll read the output from the compiler into a memory stream.
- Components can then be assembled into larger UIs forming more complex components and pages.
- In this method, we’ll read the output from the compiler into a memory stream.
- WebAssembly, commonly abbreviated as WASM, is a binary instruction format designed for web browsers.
- JavaScript development has traditionally been inseparable from web development.
For a Blazor interactive WebAssembly project, we’ll use the following settings. In this post I have showed how you can use RazorEngineCore as template engine outside of ASP.NET MVC. In production environment you may want to add more stuff to it (eg. caching), but the purpose of this article was to show that it exists and is easy to use. To make our Razor Engine strongly typed we need to create a CompiledTemplate class with just one Run method and an extension method which will compile the template for us. In HtmlSafeTemplate class we override methods responsible for writing content from our properties and call HTMLEncode against them, so they become HTML safe.
Implementing Accessible UI Components and ARIA Roles in Razor Views
Then, we’ll write a method named GetArticles that takes a count parameter and returns a random number of articles based on the argument. Finally, in the markup section we’ll use a block of Razor code to replace the li elements with values returned from GetArticles. The easiest way to display values is by using a foreach loop, and writing each value within the loop. With Blazor interactive WebAssembly, choosing to use a .NET server to host the application offers additional benefits such as server pre-rendering and progressive enhancement. These features can also be completely disabled for progressive web applications (PWAs) or static file hosting.
- Within the OnInitalizedAsync method, the ApplicationState instance is used to register a callback using RegisterOnPersisting.
- Using the GetFromJsonAsync method from HttpClient a GET request is made and the JSON response is serialized to an array of string values.
- Let’s code, create, and conquer web development challenges together.
- Be mindful that the compilation of your code, followed by the dynamic Roslyn compilation, will take a few moments … so allow a good few seconds to pass before you see any output.