A switch statement can insert a section into HTML based on a number of conditions. The Razor engine is able to process conditional statements like if & Switch statement. You can print @ in HTML by repeating (Escape) the @ symbol as shown below.
These tell the compiler where to look for all the libraries we’re going to need. As with regular ASP.NET MVC, when we talk about a “template” in this context, we’re referring to a composite of a View and a ViewModel. We’ll also be using Microsoft’s RazorProjectEngine library (and related items), which are part of the Microsoft.AspNetCore.Razor namespace. However, there are many scenarios where an email is not generated by a website directly – for example, scheduled jobs that process batches of records overnight. It’s rare to find real-world applications that do not have a requirement to send out an email of some description.
This package uses .NET Standard 2, so it should work for .NET Core applications targeting the 2+ and 3+ runtimes. Compile template with IncludeDebuggingInfo() option and call EnableDebugging() before running template. If template was compiled with IncludeDebuggingInfo() option, saving and loading will keep original template source code and pdb. I would like to use Razor as a templating engine in a .NET console application that I’m writing in .NET Core.
Also, RCL should be referenced to the main project or where the RazorTemplateEngine.RenderAsync method is invoked. This project makes use of Razor SDK for precompiling the views. I’ll definitely be checking out the “inspiration” article you referenced. IView requires implementing the Path property and the RenderAsync() method.
Installing Nuget Package
This is so that we can include the assembly, in which the code for the ViewModel exists, in the list of assemblies to be included in the compilation. You may have noticed that, nestled amongst the other library references, is an item called referenceToCallingAssembly. This is a reference to the host project, that is passed as an object argument from the main public method asp net razor tutorial CompileTemplate to the private method CompileDynamicAssembly. By hard-coded convention, the demo will expect you to put the files in a root folder of the host project called EmailTemplates. This is something that you can easily redefine if you prefer. A better idea might be to make this something that is driven by project app settings, but we’ll keep it simple for now.
A view engine is a web application framework component responsible for rendering a web page’s user interface (UI) or presentation layer. It takes data from the server and combines it with templates or markup to generate the final HTML that is sent to the client’s browser. View engines play a crucial role in separating the presentation logic from the application’s business logic, promoting clean code architecture and maintainability. The second issue, which I have yet to find a work around, is that we need to inject logic into every template to create variables (who’s values are determined during runtime). For example, we determine a directory location and create a string version of a code block for a cshtml document.
Use Cases for Razor Engine
Writing @using System.IO in template will not reference System.IO assembly, use builder to manually reference it. Usually as .NET developers we can create neat HTML templates using powerful Razor Engine built into MVC, but rendering Razor template requires Controller’s context. The first issue is that the RazorEngine.NetCore does not support all the syntax as its predecessor, such as the @functions. I found a forked version on github that is a bit more effort to get implemented but does work. However, management would prefer this to be a nuget package that we do not have to manage.
Now, go to the Models Folder and create a new class Customer.cs. The Razor syntax is shorter and simpler and easy to learn as it uses the C# or visual basic. The Visual Studio IntelliSense support also helps with Razor syntax. The View Engine is responsible for producing an HTML response when invoked by the Controller Action method. The “templateKey” must be unique and after running the above example you can re-run the cached template with this key. The RunCompile method used here is an extension method and you need to open the RazorEngine.Templating namespace.
Post as a guest
Aside from the dependency on an MVC project, there are other subtle issues that arise when using the MVC framework. ASP.NET MVC is convention based – for example, views by default are expected to be located in the View folder. You can also work with third party view engines, such as Spark, SharpDOM, and NDjango, in ASP.NET Core MVC. I’ll demonstrate how to create a custom view engine in ASP.NET Core MVC in a later post here. Let’s modify our code one more time to take advantage of a newly created Person class. This article is a follow up of my previous post, where I showed how to easily make PDF files out of HTML, but completely omitted how to pre-render it.
Let’s first use some common constructs such as the if, if else, and switch case statements. First off, let’s create an ASP.NET Core project in Visual Studio 2019. Following these steps will create a new ASP.NET Core MVC 5 project in Visual Studio 2019.