ErrorMessages.cshtml

@using BlazorRealworld

<ul class="error-messages">
    @foreach (var error in Errors?.username ?? new string[0])
    {
        <li>The username @error.</li>
    }
    @foreach (var error in Errors?.email ?? new string[0])
    {
        <li>The email address @error.</li>
    }
    @foreach (var error in Errors?.password ?? new string[0])
    {
        <li>The password @error.</li>
    }
    @foreach (var error in Errors?.title ?? new string[0])
    {
        <li>The title @error.</li>
    }
    @foreach (var error in Errors?.description ?? new string[0])
    {
        <li>The description @error.</li>
    }
    @foreach (var error in Errors?.body ?? new string[0])
    {
        <li>The article text @error.</li>
    }
    @foreach (var error in Errors?.emailOrPassword ?? new string[0])
    {
        <li>The email or password @error.</li>
    }
</ul>

@functions {
    [Parameter]
    ErrorsModel Errors { get; set; }
}