How to inject IUriHelper service in Blazor?

Question

How to add implementation of IUriHelper service to Startup.cs in Blazor?

No. When I'm using @Inject IUriHelper I'm getting InvalidOperationException: Cannot provide a value for property 'uriHelper' on type 'WebUI.Shared.NavMenu'. There is no registered service of type 'Microsoft.AspNetCore.Blazor.Services.IUriHelper'. — Dmitry, Sep 29 '19 at 14:42

score 20 · Accepted Answer · answered Sep 29 '19 at 16:04

IUriHelper is now NavigationManager. See Get current Url in a Blazor component for details.

You can inject and use NavigationManager at Shared/NavMenu.cshtml without issues. You don't need any expecial, you don't need to add NavigationManager at app startup, it's already injected. Sample:

Shared/NavMenu.cshtml:

@inject NavigationManager NavigationManager

<div class="top-row pl-4 navbar navbar-dark">
    <a class="navbar-brand" href="">
        @(NavigationManager.Uri)    @* <--- sample using it --- *@
    </a>
    <button class="navbar-toggler" @onclick="ToggleNavMenu">
        <span class="navbar-toggler-icon"></span>
    </button>
</div>

Result:

score -2 · Answer 2 · answered Sep 29 '19 at 13:46

-2

You don't have to, it is injected by default.

answered Sep 29 '19 at 13:46

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How to inject IUriHelper service in Blazor?

2 Answers2