Blazor get absolute URL from within the class

Question

Hello,

I have a class inside the Services folder.

It contains a LogError(Exception ex) method in which I need the absolute URL in order to get the requested page.

However, I am unable to access the HttpContext.Request.Url or any other method/extension that I tried.

Thank you

Answer 1

As stated in the document:

HttpContext can be used as a cascading parameter only in statically-rendered root components for general tasks, such as inspecting and modifying headers or other properties in the App component (Components/App.razor). The value is always null for interactive rendering.

You could get the absolute URL with NavigationManager,for example:

public class MyService
{
   public  MyService(NavigationManager navigationManager) 
    {
        _navigationManager = navigationManager;
    }
    private readonly NavigationManager _navigationManager;
    public string GetUri()
    {
        var currentUri = _navigationManager.Uri;
        return currentUri;
    }
}

Result:

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Best regards,

Ruikai Feng