Question

我运行了Visual Studio 2017 Community Edition网站上给出的示例，它运行良好。但是，当我尝试在winforms库上运行它时，即使给出了完全相同的术语，它也会挂起：

控制台版本

static void Main(string[] args)
{
    var newsApiClient = new NewsApiClient("KeyRedacted");
    var articlesResponse = newsApiClient.GetEverything(new EverythingRequest
    {
        Q = "Apple",
        SortBy = SortBys.Popularity,
        Language = Languages.EN,
        From = new DateTime(2018, 10, 16)
    });
    if (articlesResponse.Status == Statuses.Ok)
    {

    //code here

Winforms版本

private void btnSearch_Click(object sender, EventArgs e)
{
    var newsApiClient = new NewsApiClient("keyredacted");
    var articleResponse = newsApiClient.GetEverything(new EverythingRequest
    {
        Q = "Apple",
        SortBy = SortBys.Popularity,
        Language = Languages.EN,
        From = new DateTime(2018, 10, 16)
    });  //this is where it hangs

    if (articleResponse.Status == Statuses.Ok)
    {

Answer 1

假设您正在使用this client，则method you're calling使用的Task.Result可以cause a deadlock。似乎合理，因为代码/签名和示例匹配。

我会像这样为WinForms重写代码：

private async void btnSearch_Click(object sender, EventArgs e)
{
    var newsApiClient = new NewsApiClient("keyredacted");
    var articleResponse = await newsApiClient.GetEverythingAsync(new EverythingRequest
    ...

如果您不愿意在代码中不使用异步方法，可以尝试在Task.Run(() => /* stuff */);内运行它

另请参阅：https://blogs.msdn.microsoft.com/pfxteam/2012/04/13/should-i-expose-synchronous-wrappers-for-asynchronous-methods/

NewsAPI C＃库在控制台上运行，在winforms上挂起

1 个答案: