[SOLVED] Using a DI with partial views in asp.net core razor pages

Using a DI with partial views in asp.net core razor pages

A partial view (working completely fine otherwise; when not using DI that is) is being consumed using the following line:

<partial
    name="Partials/SelectLoc"
    model="new Partials.SelectLocModel(new HttpClient(), (<this is the part with DI>))" />

The ctor for LocationList takes an object of LocationDbContext class which is basically a child of DbContext.
However, as it turns out, I am unable to instantiate the LocationDbContext in the call to the partial.

How do I correct this?

Solution

I think you should use View components instead of partial view.A view component is like a partial view that has a model, a view, and a controller.You can directly inject Dbcontext into it.

public class YourViewComponent : ViewComponent
{
private readonly LocationDbContext dbContext;

public YourViewComponent (LocationDbContext dbContext)
{
    this.dbContext = dbContext;
}

public async Task<IViewComponentResult> InvokeAsync()
{
 //...
}
}

About the details you can see the doc or this thread.

Edit:

I think there also can Inject your services in your view like this(example).

@inject System.Net.Http.HttpClient httpClient
@inject WebApplication150.Data.WebApplication150Context context

<partial name="Partials/SelectLoc"
     model="new Pages.SelectLocModelModel(httpClient,context)"/>