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C# HttpServerUtility。在等待异步操作完成时阻止执行_C#_Asp.net_Asp.net Mvc_Asp.net Mvc 5 - Fatal编程技术网

C# HttpServerUtility。在等待异步操作完成时阻止执行

C# HttpServerUtility。在等待异步操作完成时阻止执行,c#,asp.net,asp.net-mvc,asp.net-mvc-5,C#,Asp.net,Asp.net Mvc,Asp.net Mvc 5,我有一个asp.net mvc应用程序,它带有一个局部视图来呈现用户配置文件名 @{ Html.RenderAction("GetPropertiesForUser", "UserProfile"); } @model Inspinia_MVC5_xx.Models.UserProfile <div class="dropdown profile-element"> <span> <img alt="image" class="img-ci

我有一个asp.net mvc应用程序,它带有一个局部视图来呈现用户配置文件名

@{ Html.RenderAction("GetPropertiesForUser", "UserProfile"); }

@model Inspinia_MVC5_xx.Models.UserProfile
<div class="dropdown profile-element">
    <span>
        <img alt="image" class="img-circle" src="~/Images/profile_small.jpg" />
    </span>
    <a data-toggle="dropdown" class="dropdown-toggle" href="#">
        <span class="clear">
            <span class="block m-t-xs">
                <strong class="font-bold">@Model.displayName</strong>
            </span> <span class="text-muted text-xs block">Art Director <b class="caret"></b></span>
        </span>
    </a>
    <ul class="dropdown-menu animated fadeInRight m-t-xs">
        <li><a href="@Url.Action("Profile", "AppViews")">Profile</a></li>
        <li><a href="@Url.Action("Contacts", "AppViews")">Contacts</a></li>
        <li><a href="@Url.Action("Inbox", "Mailbox")">Mailbox</a></li>
        <li class="divider"></li>
        <li><a href="@Url.Action("Login", "Pages")">Logout</a></li>
    </ul>
</div>
<div class="logo-element">
    IN+
</div>
代码:

但是我得到了这个错误

HttpServerUtility。在等待异步 要完成的操作。描述:发生未处理的异常 在执行当前web请求期间。请检查 堆栈跟踪以获取有关错误及其位置的详细信息 源于代码

异常详细信息:System.InvalidOperationException: HttpServerUtility。在等待异步 要完成的操作

源错误:

第4行:第5行: 第6行:@{ Html.RenderActionGetPropertiesForUser,UserProfile;}第7行: 第8行:


如何解决此问题?

是否有ExecuteSingle方法而不是ExecuteSingAsync?我不知道。我不知道ExecuteSingleAsync是什么。您可以链接到文档吗?我有完全相同的问题,调用异步控制器函数的子RenderAction会导致HttpServerUtility。执行阻塞问题。这件事发生在我将我的项目从.NET framework 4.5.2升级到4.6.2 MVC5之后,我在网上搜索,发现有人说子渲染不能是aync函数,两年前它计划在MVC6中修复,现在被.NET core取代。对我来说,我没有更好的解决方案,只是将控制器功能更改为同步
public class UserProfileController : Controller
{
    public async Task<ActionResult> GetPropertiesForUser()
    {
        Uri serviceRoot = new Uri(SettingsHelper.AzureAdGraphApiEndPoint);
        var token = await AppToken.GetAppTokenAsync();

        ActiveDirectoryClient adClient = new ActiveDirectoryClient(
         serviceRoot,
         async () => await AppToken.GetAppTokenAsync());
        string userObjectID = ClaimsPrincipal.Current.FindFirst("http://schemas.microsoft.com/identity/claims/objectidentifier").Value;

        Microsoft.Azure.ActiveDirectory.GraphClient.Application app = (Microsoft.Azure.ActiveDirectory.GraphClient.Application)adClient.Applications.Where(
            a => a.AppId == SettingsHelper.ClientId).ExecuteSingleAsync().Result;
        if (app == null)
        {
            throw new ApplicationException("Unable to get a reference to application in Azure AD.");
        }

        string requestUrl = string.Format("https://graph.windows.net/{0}/users/{1}?api-version=1.5", SettingsHelper.Tenant,ClaimsPrincipal.Current.Identities.First().Name);

        HttpClient hc = new HttpClient();
        hc.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue(
            "Bearer", token);

        HttpResponseMessage hrm = await hc.GetAsync(new Uri(requestUrl));

        if (hrm.IsSuccessStatusCode)
        {
            UserProfile up = JsonConvert.DeserializeObject<UserProfile>(await hrm.Content.ReadAsStringAsync());
            return PartialView(up);
            //return View("GetPropertiesForUser", new UserProfile
            //{
            //    DisplayName = up.displayName() //I am still missing here to get the display name only
            //});
        }
        else
        {
            return View();
        }
    }

}