c# – 即使在Asp.Net流中使用ConfigureAwait(false)后仍然死锁

根据样本http://blog.stephencleary.com/2012/02/async-and-await.html(#Avoding上下文),这不应该是死锁.

这是我的课：

public class ProjectsRetriever
{
    public string GetProjects()
    {
        ...
        var projects = this.GetProjects(uri).Result;
        ...
        ...
    }

    private async Task<IEnumerable<Project>> GetProjects(Uri uri)
    {
        return await this.projectSystem.GetProjects(uri,Constants.UserName).ConfigureAwait(false);
    }
}

这个类来自一个共享库：

public class ProjectSystem
{
    public async Task<IEnumerable<Project>> GetProjects(Uri uri,string userName)
    {
        var projectClient = this.GetHttpClient<ProjectHttpClient>(uri);
        var projects = await projectClient.GetProjects();
        // code here is never hit
        ...
}

如果我在配置HttpClient调用的共享库中添加ConfigureAwait(false)来等待调用,则可以工作：

public class ProjectSystem
{
    public async Task<IEnumerable<Project>> GetProjects(Uri uri,string userName)
    {
        var projectClient = this.GetHttpClient<ProjectHttpClient>(uri);
        var projects = await projectClient.GetProjects().ConfigureAwait(false);
        // no deadlock,resumes in a new thread.
        ...
}

我一直在浏览所有发现的博客,只有区别我发现ConfigureAwait(false)工作时使用httpClient.AsyncApi()调用！

请帮忙澄清!!!