最佳答案

您可以使用 Microsoft Identity Client nuget 包和 OAuthCredentials 继续像以前一样使用 EWS。您必须通过 Azure 应用注册授予 EWS.AccessAsUser.All 权限。这是迄今为止我发现的删除 EWS 基本身份验证的最佳方法。

string clientId = "Your Clinet Id";
string tenantId = "your Tenant Id";
string[] scopes = { "https://outlook.office365.com/EWS.AccessAsUser.All" };
Microsoft.Identity.Client.IPublicClientApplication publicClientApplication = Microsoft.Identity.Client.PublicClientApplicationBuilder.Create(clientId).WithTenantId(tenantId).Build();

System.Security.SecureString secureString = new System.Security.SecureString();
foreach (char ch in password)
     secureString.AppendChar(ch);

Microsoft.Identity.Client.AcquireTokenByUsernamePasswordParameterBuilder authBuilder = publicClientApplication.AcquireTokenByUsernamePassword(scopes, userName, secureString);
Microsoft.Identity.Client.AuthenticationResult result = await authBuilder.ExecuteAsync();

ExchangeService service = new ExchangeService
{
     Credentials = new OAuthCredentials(result.AccessToken)
};

https://stackoverflow.com/questions/58094438/