c# - 检查时间跨度

Question

我有一个查询事件目录的方法，并将上次密码重置的值返回到局部变量。我试图将该值与当前日期和时间进行比较，并检查它是否少于 24 小时。我想我已经接近了，但似乎无法让它发挥作用。

谢谢， 杰森

string passwordLastSet = string.Empty;
passwordLastSet = DateTime.FromFileTime((Int64)(result.Properties["PwdLastSet"][0])).ToString();  
public string lastReset(DateTime pwordLastReset)
{
    if (DateTime.Now.AddHours(24) <= passwordLastSet)
    {
        return "try again later";
    }
    else
    {
        return "all is good";
    }
}

Answer 1

I am trying to compare that value to the current date and time, and check if it's been less than 24 hours.

这段代码几乎是自己写的。

DateTime timeOfLastPasswordReset = // get time of last password reset
DateTime now = DateTime.Now;
TimeSpan difference = now.Subtract(timeOfLastPasswordReset);
if(difference < TimeSpan.FromHours(24)) {
    // password was reset less than twenty-four hours ago
}
else {
    // password was reset no less than twenty-four hours ago
}

请注意代码的读法与您用英语指定的完全一致。