Blazor how to get system username?

Question

Hi, I'm trying to display the username on the frontend using Blazor on .net 6. Username is the username from: command line -> set, or from task manager -> users. Something like FirstnameLastname. My Blazor program also uses Azure authentication sign in if there's a way to pull userid from that end.

So far I've tried:

Environment.UserName returns "browser"

System.Security.Principal.WindowsIdentity.GetCurrent().Name gives an error of "Windows Principal functionality is not supported on this platform"

Any help will be appreciated, thanks.

Answer 1

In a Blazor App, you can get the username by the following.

@Георгий Георгиевский .User.Identity?.Name

In Visual studio, you can create the Blazor App, and choose individual user accounts for authentication. Visual studio will create all the neccessary files for you to start with. There is a login display component, created, and this include display the username. See the following code.

@using Microsoft.AspNetCore.Components.Authorization  
@using Microsoft.AspNetCore.Components.WebAssembly.Authentication  
  
@inject NavigationManager Navigation  
@inject SignOutSessionStateManager SignOutManager  
  
<AuthorizeView>  
    <Authorized>  
        <a href="authentication/profile">Hello, @context.User.Identity?.Name!</a>  
        <button class="nav-link btn btn-link" @onclick="BeginSignOut">Log out</button>  
    </Authorized>  
    <NotAuthorized>  
        <a href="authentication/register">Register</a>  
        <a href="authentication/login">Log in</a>  
    </NotAuthorized>  
</AuthorizeView>  
  
@code{  
    private async Task BeginSignOut(MouseEventArgs args)  
    {  
        await SignOutManager.SetSignOutState();  
        Navigation.NavigateTo("authentication/logout");  
    }  
}  

Answer 2

Solution: I had to put Environment.UserName inside the controller in project.server... not the project.client