带有 SendGrid 的 Azure Functions 无法在 Visual Studio 中编译

Question

我正在尝试在 Visual Studio 中使用 SendGrid 来运行 Azure Functions 的简单示例:

[FunctionName("SendEmail")]
public static void SendEmail([HttpTrigger(AuthorizationLevel.Function, "post", Route = null)] [SendGrid()] out Mail message)
    {
        message = new Mail
        {
            Subject = "From VS"
        };

        var personalization = new Personalization();
        // change to email of recipient
        personalization.AddTo(new Email("<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="7f15101a3f191010511c1012" rel="noreferrer noopener nofollow">[email protected]</a>"));

        Content content = new Content
        {
            Type = "text/plain",
            Value = "testing from VS."
        };

        message.AddContent(content);
        message.AddPersonalization(personalization);
}

但是我收到以下编译错误:

System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.Azure.WebJobs, Version=2.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

除了这些警告之外:

我安装了 Visual Studio 2017 15.7.1。该项目面向 .NET Standard 2.0，我的项目安装了以下 NuGet 包:

我需要安装或删除什么才能进行编译？

Answer 1

在引用 Microsoft.Azure.WebJobs.Extensions.SendGrid 版本 2.2.0 包时，我进一步观察到了生成警告，因为它与 .NET Standard 不兼容。将软件包升级到版本 3.0.0-beta5 后，警告消失了。此外，请注意，这意味着使用测试版产品，在发布任何生产代码之前对其进行彻底测试。

 1. 'Microsoft.Azure.WebJobs.Extensions.SendGrid 2.2.0' was restored   
    using '.NETFramework,Version=v4.6.1' instead of the project target  
    framework '.NETStandard,Version=v2.0'. This package may not be fully
    compatible with your project.
 2. 'Sendgrid 8.0.5' was restored using '.NETFramework,Version=v4.6.1'
    instead of the project target framework '.NETStandard,Version=v2.0'.
    This package may not be fully compatible with your project.
 3. 'SendGrid.CSharp.HTTP.Client 3.0.0' was restored using
    '.NETFramework,Version=v4.6.1' instead of the project target
    framework '.NETStandard,Version=v2.0'. This package may not be fully
    compatible with your project.