Converting string to DateTime

Imports System.Globalization

Dim strDate As String = "31/10/2005" '(dd/MM/yyyy)

' if we are not using this , it is treated as 'mm/dd/yyyy' format.
Dim myCulture As New CultureInfo("en-GB") 
Dim dateMyDate As DateTime

We tried this, and there did not seem to be a problem 

string dtstring = "01/01/2005";

have you looked into datatime.parse

string myDateTimeValue = "2/16/1992 12:15:12";
        DateTime myDateTime = DateTime.Parse(myDateTimeValue);