title: C# TimeSpan.Parse invalid format returns incorrect value instead of exception
body: <p>TimeSpan.Parse("23:00:00") returns 23 hours.</p>
  
  <p>TimeSpan.Parse("24:00:00") returns 24 days!</p>
  
  <p>I realize that I made a mistake in that the allowable range of hours is 0-23. But for minutes and seconds if you attempt to parse an out of range value you get an exception. In the case of hours with an out of range value, the parser incorrectly assumes you meant days instead of hours.</p>
  
  <p>Can someone explain this?</p>
  
  <p>This example here covers this very topic and indicates that 
  <a href="http://msdn.microsoft.com/en-us/magazine/ee309881.aspx">http://msdn.microsoft.com/en-us/magazine/ee309881.aspx</a></p>
  
  <p>The same appears to be true about TryParse. I get 24 days despite the docs stating that the parse should fail.</p>
  
  <p><a href="http://msdn.microsoft.com/en-us/library/3z48198e">http://msdn.microsoft.com/en-us/library/3z48198e</a></p>
  
  <pre><code>//            String to Parse                TimeSpan
  //            ---------------   ---------------------
  //                          0        00:00:00
  //                         14     14.00:00:00
  //                      1:2:3        01:02:03
  //                  0:0:0.250        00:00:00.2500000
  //             10.20:30:40.50     10.20:30:40.5000000
  //        99.23:59:59.9999999     99.23:59:59.9999999
  //        0023:0059:0059.0099        23:59:59.0099000
  //                     23:0:0        23:00:00
  //                     24:0:0   Parse operation failed.
  //                     0:59:0        00:59:00
  //                     0:60:0   Parse operation failed.
  //                     0:0:59        00:00:59
  //                     0:0:60   Parse operation failed.
  //                        10:   Parse operation failed.
  //                       10:0        10:00:00
  //                        :10   Parse operation failed.
  //                       0:10        00:10:00
  //                     10:20:   Parse operation failed.
  //                    10:20:0        10:20:00
  //                       .123   Parse operation failed.
  //                    0.12:00        12:00:00
  //                        10.   Parse operation failed.
  //                      10.12   Parse operation failed.
  //                   10.12:00     10.12:00:00
  </code></pre>
  
  <p>Did I find a bug or am I doing something wrong?</p>
  
  <p>EDIT:
  I've tested this in LinqPad and using a Console app in .NET4 on Windows 7 64bit.</p>
  
  <pre><code>            var result = TimeSpan.Parse("24:00:00");
              Console.WriteLine(result);
              result = TimeSpan.Parse("24:00:00", CultureInfo.InvariantCulture);
              Console.WriteLine(result);
  </code></pre>
  
  <p>This results in:</p>
  
  <pre><code>24.00:00:00
  24.00:00:00
  </code></pre>