方法＆＃39; ComputeHash＆＃39;需要2个参数HMAC

Question

新手在这里，

我试图测试一些我编写的代码，并且我得到了一个N​​o重载方法'ComputeHash'需要2个参数错误。谁能告诉我这段代码的问题是什么？

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text.RegularExpressions;
 using System.Security.Cryptography;

 namespace Test
{
 public class MyHmac
 {
  public static void Main(string[] args)
    {
  var ImageBase64 = "123xxx=";
  var phoneApiSecret = "8da6be19-89fc-41a4-b449-62d2c0353be8";
  var Artifact = "08 239 14 05:40:51";
  var ClsDisclosureId = "123xxx";
  var UserId = "testmw";


  string x1 = HMAC.ComputeHash(phoneApiSecret,ImageBase);
  string x2 = HMACSHA1.ComputeHash(x1, Artifact);
  string calculatedHmac = HMACSHA1.ComputeHash(UserId, ClsDisclosureId + UserId);

        Console.WriteLine(calculatedHmac);
    //return Convert.ToBase64String(hashmessage);

        //Your code goes here

  }
 }

 }