Tag: View

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ASP.NET Core

Service Injection into View in ASP.NET Core

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.