在asp.net核心剃须刀页面中将DI与部分视图一起使用 [英] Using a DI with partial views in asp.net core razor pages
问题描述
使用以下行来消耗部分视图(否则可以很好地工作;否则不使用DI):
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>))" />
LocationList的ctor接受一个 LocationDbContext
类的对象,该对象基本上是 DbContext
的子级.
但是,事实证明,我无法在局部调用中实例化 LocationDbContext
.
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.
我该如何纠正?
推荐答案
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()
{
//...
}
}
有关详细信息,您可以参阅线程.
About the details you can see the doc or this thread.
我认为也可以像这样(示例)在您的视图中注入您的服务.
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)"/>
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