Compare object to DateTime and returns an integer that indicates the sequence in CSharp

using System;/*from  w  ww . j a  v  a2  s. c o  m*/
public class MainClass{
  public static void Main(String[] argv){  
    System.DateTime theDay = new System.DateTime(System.DateTime.Today.Year, 7, 28);
    int compareValue;
    
    try {
        compareValue = theDay.CompareTo(DateTime.Today);
    } catch (ArgumentException) {
       Console.WriteLine("Value is not a DateTime");
       return;
    }
    
    if (compareValue < 0) 
       System.Console.WriteLine("{0:d} is in the past.", theDay);
    else if (compareValue == 0) 
       System.Console.WriteLine("{0:d} is today!", theDay);
    else // compareValue > 0
       System.Console.WriteLine("{0:d} has not come yet.", theDay);
  }
}