WebAuthenticator总是跳过登录页面，如何为新用户获取新的登录表单？

Question

WebAuthenticator总是跳过登录页面，如何每次为新用户获取新的登录信息。

Answer 1

您可以添加一个注销方法。我们检查MSAL为我们在本地缓存的所有可用帐户，并将它们注销。我们还清除了登录时存储在安全存储中的访问令牌。

public async Task<bool> SignOutAsync()
{
try
{
    var accounts = await _pca.GetAccountsAsync();

    // Go through all accounts and remove them.
    while (accounts.Any())
    {
        await _pca.RemoveAsync(accounts.FirstOrDefault());
        accounts = await _pca.GetAccountsAsync(); //The _pca is the PublicClientApplicationBuilder
    }

    // Clear our access token from secure storage.
    SecureStorage.Remove("AccessToken");

    return true;
}
catch (Exception ex)
{
    Debug.WriteLine(ex.ToString());
    return false;
}
}

更新：登录

      public async Task<bool> SignInAsync()
 {
try
{
    var accounts = await _pca.GetAccountsAsync();
    var firstAccount = accounts.FirstOrDefault();
    var authResult = await _pca.AcquireTokenSilent(Scopes, firstAccount).ExecuteAsync();

    // Store the access token securely for later use.
    await SecureStorage.SetAsync("AccessToken", authResult?.AccessToken);

    return true;
}
catch (MsalUiRequiredException)
{
    try
    {
        // This means we need to login again through the MSAL window.
        var authResult = await _pca.AcquireTokenInteractive(Scopes)
                                    .WithParentActivityOrWindow(ParentWindow)
                                    .ExecuteAsync();

        // Store the access token securely for later use.
        await SecureStorage.SetAsync("AccessToken", authResult?.AccessToken);

        return true;
    }
    catch (Exception ex2)
    {
        Debug.WriteLine(ex2.ToString());
        return false;
    }
}
catch (Exception ex)
{
    Debug.WriteLine(ex.ToString());
    return false;
}
}