ASP.NET 和 Graph 仅在特定条件下工作

Question

首先让我们说这个问题让我发疯:-)

背景信息： 我需要向旧项目 ASP.NET、Framework 4.7.2 和 webform 添加图形支持。 我知道，这是一项古老而糟糕的技术，但我需要它发挥作用。

下面的代码 (C#) 在新项目 ASP.NET core Web 应用程序模板中运行良好

    
using Azure.Identity;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.Graph;
using Microsoft.Graph.Models;


namespace WebApplication_testGraph.Pages
{
    public class IndexModel : PageModel
    {
        private readonly ILogger<IndexModel> _logger;
   
        public IndexModel(ILogger<IndexModel> logger)
        {
            _logger = logger;
        }

        public void OnGet()
        {

            var scopes = new[] { "https://graph.microsoft.com/.default" };

            var tenantId = "xxx";

            // Values from app registration
            var clientId = "xxx";
            var clientSecret = "xxx";

            // using Azure.Identity;
            var options = new TokenCredentialOptions
            {
                AuthorityHost = AzureAuthorityHosts.AzurePublicCloud
            };

            // https://learn.microsoft.com/dotnet/api/azure.identity.clientsecretcredential
            var clientSecretCredential = new ClientSecretCredential(
                tenantId, clientId, clientSecret, options);

            var accessToken =  clientSecretCredential.GetTokenAsync(new Azure.Core.TokenRequestContext(scopes) { });

           // Console.WriteLine(accessToken.Token);

            var graphClient = new GraphServiceClient(clientSecretCredential, scopes);

            var requestBody = new Microsoft.Graph.Users.Item.SendMail.SendMailPostRequestBody
            {
                Message = new Message
                {
                    Subject = "Meet for lunch?",
                    Body = new ItemBody
                    {
                        ContentType = BodyType.Text,
                        Content = "The new cafeteria is open.",
                    },
                    ToRecipients = new List<Recipient>
        {
            new Recipient
            {
                EmailAddress = new EmailAddress
                {
                    Address = "[email protected]",
                },
            },
        },
                },
                SaveToSentItems = false,
            };

             graphClient.Users["[email protected]"].SendMail.PostAsync(requestBody);
        }

    }
}

但是在使用 ASP.NET Framework 4.7.2、C# 和 Web Form 的项目中，大约相同的代码不起作用。 我没有错误，但什么也没发生

这是代码：

using Azure.Identity;
using Microsoft.Graph;
using Microsoft.Graph.Me.SendMail;
using Microsoft.Graph.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;


public partial class test_email : System.Web.UI.Page
{
    protected async Task Page_LoadAsync(object sender, EventArgs e)
    {
       
        var scopes = new[] { "https://graph.microsoft.com/.default" };

        var tenantId = "xxx";

        // Values from app registration
        var clientId = "xxxx";
        var clientSecret = "xxxx";

        // using Azure.Identity;
        var options = new TokenCredentialOptions
        {
            AuthorityHost = AzureAuthorityHosts.AzurePublicCloud
        };

        // https://learn.microsoft.com/dotnet/api/azure.identity.clientsecretcredential
        var clientSecretCredential = new ClientSecretCredential(
            tenantId, clientId, clientSecret, options);

        var accessToken = await clientSecretCredential.GetTokenAsync(new Azure.Core.TokenRequestContext(scopes) { });

        //Console.WriteLine(accessToken.Token);

        var graphClient = new GraphServiceClient(clientSecretCredential, scopes);

        var requestBody = new Microsoft.Graph.Users.Item.SendMail.SendMailPostRequestBody
        {
            Message = new Message
            {
                Subject = "Meet for lunch?",
                Body = new ItemBody
                {
                    ContentType = BodyType.Text,
                    Content = "The new cafeteria is open.",
                },
                ToRecipients = new List<Recipient>
        {
            new Recipient
            {
                EmailAddress = new EmailAddress
                {
                    Address = "[email protected]",
                },
            },
        },
            },
            SaveToSentItems = false,
        };

        await graphClient.Users["[email protected]"].SendMail.PostAsync(requestBody);

            }
}

您能帮我理解为什么代码在这种情况下不起作用吗？

TNX

我尝试着改变

protected async Task Page_LoadAsync(object sender, EventArgs e)

在

public async Task Page_LoadAsync(object sender, EventArgs e)

Answer 1

I have no errors, but nothing really happens

-> 我创建了一个新的.net Framework 4.8 MVC项目（我没有在我的机器上安装4.7），然后在HomeController/Index方法中，我添加了下面的代码，效果很好。

using Azure.Identity;
using Microsoft.Graph;

public async Task<ActionResult> Index()
{
    var scopes = new[] { "https://graph.microsoft.com/.default" };
    var tenantId = "tenantId ";
    var clientId = "clientId ";
    var clientSecret = "clientSecret ";
    var clientSecretCredential = new ClientSecretCredential(
                    tenantId, clientId, clientSecret);
    var graphClient = new GraphServiceClient(clientSecretCredential, scopes);
    var users = await graphClient.Users.GetAsync();
    return View();
}

但是如果方法名称是

IndexAsync()

，我会得到404错误。

Answer 2

领先一步。 现在，下面的代码可以运行并在 ASP.NET 4.8、Web 表单、Framework 4.7.2 中发送电子邮件。 现在我需要添加一些附件，但由于其保护级别，MessageAttachmentsCollectionPage 无法访问

ublic partial class Test_email : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    { }

    public async void Button1_Click(object sender, EventArgs e)
    {
        try
        {
            // 
            await GetGizmosSvcAsync();

            // 
            Response.Redirect("Post.aspx");
        }
        catch (Exception ex)
        {
            
        }
    }
     
    public async Task GetGizmosSvcAsync()
    {
        try
        {
           
          
            var scopes = new[] { "https://graph.microsoft.com/.default" };
            var tenantId = "";
            var clientId = "";
            var clientSecret = "";
           
            var attachments = new MessageAttachmentsCollectionPage();

            var options = new TokenCredentialOptions
            {
                AuthorityHost = AzureAuthorityHosts.AzurePublicCloud
            };

            var clientSecretCredential = new ClientSecretCredential(
                tenantId, clientId, clientSecret, options);

            var graphClient = new GraphServiceClient(clientSecretCredential, scopes);

            var requestBody = new Microsoft.Graph.Users.Item.SendMail.SendMailPostRequestBody
            {
                Message = new Message
                {
                    Subject = "Meet for lunch XXXX1?",
                    Body = new ItemBody
                    {
                        ContentType = BodyType.Text,
                        Content = "The new cafeteria is open.",
                    },
                    ToRecipients = new List<Recipient>
                {
                    new Recipient
                    {
                        EmailAddress = new EmailAddress
                        {
                            Address = "[email protected]",
                        },
                    },
                },
                },
                SaveToSentItems = false,
            };

            await graphClient.Users["[email protected]"].SendMail.PostAsync(requestBody);


        }
        catch (Exception ex)
        {
            
        }
    }


}