Unexpected Errors

_authError.cshtml

@if (ViewBag.ErrorMessage == "AuthorizationRequired")
{
    <p>You have to sign-in to @ViewBag.OperationName. Click <a href="@ViewBag.AuthorizationUrl" title="here">here</a> to sign-in.</p>
    <p>@ViewBag.ErrorMessage</p>
}

_unexpectedError.cshtml

@if (ViewBag.ErrorMessage != "AuthorizationRequired" && ViewBag.ErrorMessage != null)
{
    <p class="text-danger">
        An unexpected error occurred while attempting to @ViewBag.OperationName<br />
    <strong>Error: @ViewBag.ErrorMessage</strong>
    </p>
}