How to validate that a string is a valid date?

VB.NET

Dim blnValid As Boolean = False
Try
   	DateTime.Parse(MyString)
	blnValid = True
Catch
	blnValid = False
End Try

C#

bool blnValid=false;
try
{
   	DateTime.Parse(MyString);
   	blnValid=true;
}
catch
{
   	blnValid=false;
}