无法在C＃Azure函数中使用Nuget程序包

Question

我正在尝试编写一个将使用Sendgrid发送电子邮件的天蓝色函数。但是，我无法获得识别外部nuget包的功能。这是我所拥有的：project.json{"frameworks": {    "net46": {        "dependencies": {            "SendGrid": "9.9.0"        }    }  }}run.csx：using System;using Sendgrid;public static void Run(TimerInfo myTimer, TraceWriter log){    var client = new SendGridClient("xxx");    var fromAddr = new EmailAddress("[e-mail]", "xxx");    var toAddr = new EmailAddress("xxxx", "xxx);    var msg = MailHelper.CreateSingleEmail(fromAddr, toAddr, "subject", "content", "content");    client.SendEmailAsync(msg).Wait();}我收到此错误：[Error] run.csx(8,7): error CS0246: The type or namespace name 'Sendgrid' could not be found (are you missing a using directive or an assembly reference?)我想念什么？