我正在嘗試編寫一個(gè)將使用Sendgrid發(fā)送電子郵件的天藍(lán)色函數(shù)。但是，我無法獲得識別外部nuget包的功能。這是我所擁有的：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("xxx@xxx.com", "xxx");    var toAddr = new EmailAddress("xxxx", "xxx);    var msg = MailHelper.CreateSingleEmail(fromAddr, toAddr, "subject", "content", "content");    client.SendEmailAsync(msg).Wait();}我收到此錯(cuò)誤：[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？