c# - 此 C# 代码如何工作（在 aspx.cs 类中）

Question

我对以下代码感到困惑，看起来它在这里被禁用了？

    public bool GetFormsCredentials(out Cookie authCookie, out string userName, out string password, out string authority) {
        authCookie = null;
        userName = password = authority = null;
        return false;
    }

它不应该是这样的吗？

userName =  myName
password =  12345
authority = someAuthority

Answer 1

C#赋值操作中“=”返回赋值，所以上面的代码执行如下：

userName = (password = (authority = null));

或者

authority = null;
password = authority;
userName = password;