这个异步链的实现有什么问题？

Question

我在控制台应用程序中有以下代码。LookUpUser方法被调用，而PostAsJsonAsync被调用，但是响应检查中的断点此后不会被命中。我在此实现中做错了什么？static void Main(string[] args){    TestUseCase().GetAwaiter().GetResult();}private static async Task TestUseCase(){    await GetUserGuids();}private static async Task GetUserGuids(){    var userGuids = new List<Guid>();    userGuids.Add(Guid.Parse("7b5cf09c-196c-4e0b-a0e2-0683e4f11213"));    userGuids.Add(Guid.Parse("3a636154-b7fc-4d96-9cd1-d806119ff79f"));    userGuids.ForEach(async x => await LookUpUser(x));}private static async Task LookUpUser(Guid adUserGuid){    var client = new HttpClientManager().GetHttpClient();    var response = await client.PostAsJsonAsync("api/v1/users/search", new { ADUserGuid = adUserGuid });    if (response.IsSuccessStatusCode)    {        var groups = await response.Content.ReadAsAsync<List<User>>();    }    else //not 200    {        var message = await response.Content.ReadAsStringAsync();    }}

Answer 1

我通过将ForEach更改为：

foreach (var guid in userGuids)

{

    await LookUpUserInSecurityApi(guid);

}