String to DateTime dd/mm/yy error

Question

foreach (var file in Directory.GetFiles(@"C:\Users\Andrew\Desktop\Timesheets\2011", "*.xlsx", SearchOption.AllDirectories)){             
  Paycheck p = new Paycheck(DateTime.ParseExact(file.Substring(file.LastIndexOf("_" + 1), 6), "dd/mm/yy", null), file);
  _Paychecks.Add(p);
}

I am trying to get a DateTime from a filename that my program will be scanning through. The DateTime is formatted as dd/mm/yy. Every time I get to this line of code:

Paycheck p = new Paycheck(DateTime.ParseExact(file.Substring(file.LastIndexOf("_" + 1), 6), "dd/mm/yy", null), file);

The program breaks to the application without doing anything. It will not give me an error message and any information as to what is going on. I'm sure I've written this in some sort of confusing manner so let me know what you need clarification on.

Here is an example of one of the file names incase that helps;

Weekly Time & Expense Sheet_AT_073111

Answer 1

You need to use capital MM to represent Month instead of small mm

from your sample Date string 07312011 it looks like

first two digits - 07 => Month
next two digits - 31 => Date
next four digits - 2011 => Year

hence your format should be MMddyyyy

EDIT: you need to add 1 after closing the LastIndexOf() function

Try This:

Paycheck p = new Paycheck(DateTime.ParseExact(file.Substring(
                   file.LastIndexOf("_") + 1, 6), "MMddyyyy", null), file);

Answer 2

Try this.

while converting string to DateTime, use

 Convert.ToDateTime(//your string which is converted to DateTime//).