Service Injection into View in ASP.NET Core

Categories : ASP.NET Core

Author : Golda G Date : Feb 14, 2022

Service Injection into View in ASP.NET Core

This blog is about how dependency is injected directly into view. Let us look at it using a small example.

The following is a ColorListService class that returns a list of strings.

Note

Put all your services in a separate folder called Services. So this will help you maintain a project structure

ColorListService.cs

public class ColorListService
{
    public List<string> GetColors()
    {
        return new List<string>() { “Red”, “Blue”, “Green”, “Yellow”, “Violet” };
    }
}

Before you can use a service, you must register for the service. See ASP.NET Service Scope for more information

Startup.cs

public void ConfigureServices(IServiceCollection services)
{
    services.AddTransient<ColorListService>();
    services.AddControllersWithViews();
}

The following is a view code. Here the ColorListService is injected using @Inject Directive. Finally a list of colors is listed using foreach.

ServiceDemo.cshtml

@{
    Layout = null;
    ViewData[“Title”] = “Service Injection into View”;
}

@inject SampleMVCApplication.Services.ColorListService  colors

<h4>Service Injection into View in ASP.NET Core</h4>

@foreach (string item in colors.GetColors())
{
    <div>@item</div>
}

Below is a HomeController code. It has a ServiceDemo() action which will render a ServiceDemo view.

HomeController.cs

public class HomeController : Controller
{
    public IActionResult ServiceDemo()
    {
         return View();
    }
}

The following is the output of the above code

Service Injection into View

This blog explains how to inject the service directly into the view with a small example.

If you have any questions, please leave a comment below.

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