ASP.NET MVC 3 Razor DateTime.Parse don't work - asp.net-mvc-3

Question

I'm trying to do a cast with dates but it's throws me an exception
.
The code is:
This Works ->
var FechaInicio = Model != null ? DateTime.Parse(Model.FechaInicio).Date.ToString("dd/MM/yyyy") : DateTime.Parse("").Date.ToString("dd/MM/yyyy");
This Doesn't Work ->
var FechaFin = Model != null ? DateTime.Parse(Model.FechaFin).Date.ToString("dd/MM/yyyy") : DateTime.Parse("").Date.ToString("dd/MM/yyyy");
The model is Ok and values are dates in string format
The error is:
Server Error in '/' Application.
String was not recognized as a valid DateTime.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.FormatException: String was not recognized as a valid DateTime.
Source Error:
Line 13: var Ubicacion = Model != null ? Model.Ubicacion : null;
Line 14: var FechaInicio = Model != null ? DateTime.Parse(Model.FechaInicio).Date.ToString("dd/MM/yyyy") : DateTime.Parse("").Date.ToString("dd/MM/yyyy");
Line 15: var FechaFin = Model != null ? DateTime.Parse(Model.FechaFin).Date.ToString("dd/MM/yyyy") : DateTime.Parse("").Date.ToString("dd/MM/yyyy");

Answer 1

The error is straight-forward. The string being passed to Parse could not be interpreted as a valid DateTime. By default, the format of the current culture is employed, when using Parse. Not sure what that is exactly in your case, but it would likely be the same as you would see by outputting DateTime.Now.ToString().
The reason DateTime.Today.ToString() failed, is because the output will only have a date component. The default format utilized by Parse will require date and time components.
If you need to parse a string into a DateTime that doesn't match the format of the current culture, then you need to use ParseExact instead of Parse and pass a format string that shows how the string-based datetime is formatted.