Microsoft Graph API 待办事项列表调用(无法将 ITodoListCollectionPage 转换为待办事项)

Microsoft Graph API To Do List Call (Cannot Convert ITodoListCollectionPage to Todo)

我正在创建一个 .Net Core 应用程序,用户可以在其中 login/logout 使用他们的 Microsoft 365 帐户,还可以通过 Microsoft Graph API 查看他们的任务 Lists/Tasks。我目前正在尝试通过 API 使用请求列表。

Controller.cs

 [AuthorizeForScopes(ScopeKeySection = "DownstreamApi:Scopes")]
        public async Task<IActionResult> Tasks()
        {
            User currentUser = null;
            Todo currentLists = null;

            try 
            {
                currentUser = await _graphServiceClient.Me.Request().GetAsync();
                currentLists = await _graphServiceClient.Me.Todo.Lists.Request().GetAsync();

            }
            catch (ServiceException svcex) when (svcex.Message.Contains("Continuous access evaluation resulted in claims challenge"))
            {
                try
                {
                    Console.WriteLine($"{svcex}");
                    string claimChallenge = WwwAuthenticateParameters.GetClaimChallengeFromResponseHeaders(svcex.ResponseHeaders);
                    _consentHandler.ChallengeUser(_graphScopes, claimChallenge);
                    return new EmptyResult();
                }
                catch (Exception ex2)
                {
                    _consentHandler.HandleException(ex2);
                }
            }

            ViewData["Me"] = currentUser;
            ViewData["Lists"] = currentLists;
            return View();
        }

但是这引发了一个问题

currentLists = await _graphServiceClient.Me.Todo.Lists.Request().GetAsync();

无法转换为 Todo 类型以便我随后在以下 cshtml 页面上使用数据

@using Newtonsoft.Json.Linq
@{
    ViewData["Title"] = "User Profile fetched from MS Graph";
    Layout = "~/Views/Shared/_Layout.cshtml";
}
<br />
<br />

<table class="table table-striped table-condensed" style="font-family: monospace" border="1">
    <thead>
        <tr>
        </tr>
        @{
            var lists = ViewData["lists"] as Microsoft.Graph.TodoTaskList;
            <tr>
                <th>
                    ID
                </th>
                <th>
                    @lists.DisplayName
                </th>
                <th></th>
            </tr>
        }
    </thead>
    <tbody>
    </tbody>

将 currentLists 转换为建议的类型“ITodoListCollectionsPage”会导致 Web 应用程序现在允许访问所请求的数据。

如何解决此问题并调用 Microsoft Graph API 以获取 Todo 任务列表并正确输出

await _graphServiceClient.Me.Todo.Lists.Request().GetAsync(); returns ITodoListCollectionsPage.

您需要遍历所有页面并获取所有 ToDo 任务列表。

var currentLists = new List<TodoTaskList>();
var todoListsPage = await _graphServiceClient.Me.Todo.Lists.Request().GetAsync();
currentLists.AddRange(todoListsPage.CurrentPage.ToList());
while (todoListsPage.NextPageRequest != null)
{
    todoLists = await todoListsPage.NextPageRequest.GetAsync();
    currentLists.AddRange(todoListsPage.CurrentPage.ToList());
}

如果您想获得待办事项任务,您需要为 List<TodoTaskList>

中的每个 TodoTaskList 提出另一个请求

仅示例如何获取待办事项:

var todoTasksDict = new Dictionary<string, List<TodoTask>>();
foreach (var todoList in currentLists)
{
    var todoTasks = new List<TodoTask>();
    var todoTasksPage = await client.Me.Todo.Lists[todoList.Id].Tasks.Request().GetAsync();
    todoTasks.AddRange(todoTasksPage.CurrentPage.ToList());
    while (todoTasksPage.NextPageRequest != null)
    {
        todoTasksPage = await todoTasksPage.NextPageRequest.GetAsync();
        todoTasks.AddRange(todoTasksPage.CurrentPage.ToList());
    }
    todoTasksDict[todoList.DisplayName] = todoTasks;
}

我不知道你想如何显示待办任务列表和相关的待办任务,但你需要修改你的视图。