C# Method to determine whether the date expires

This article describes the method of judging whether a date expires in C#, which is of great practical value in C# program development. Share it for your reference. The specific methods are as follows:

Generally, in the user permission system, it is sometimes necessary to determine whether it expires based on the user's signing time and contract duration. Let’s take a look at the help class as follows:

public static class DateExprieHelper
{
  /// &lt;summary&gt;
  ///Judge whether it expires based on the signing time and signing time  /// &lt;/summary&gt;
  /// <param name="joinDate">Contract time</param>  /// <param name="duration">Contract time</param>  /// &lt;returns&gt;&lt;/returns&gt;
  public static bool IsExpriredByDay(DateTime joinDate, double duration)
  {
    return  - joinDate &gt; (duration); 
  }
}

The client call code is as follows:

class Program
{
  static void Main(string[] args)
  {
    var result = (new DateTime(2014, 1, 1), 365);
    if (result)
    {
      ("It's expired~~");
    }
    else
    {
      ("Not expired yet~~");
    }
    ();
  }
}

The operation result shows: Not expired yet~~

I hope this article will be helpful to everyone's C# programming