Question

date[inc] = [0] = "01/01/2011"

dateTimePicker1.Value = {01/01/2011 00:00:00}

The if condition is never fulfilled when changing a secondary datetimepicker. The first datetimepicker has to be changed once before this code will work. This code is triggered by a ValueChanged in both cases.

Any ideas?

Edit:

int start;
int inc = 0;
while (true)
{
   inc++;
   if (Convert.ToString(dateTimePicker1.Value.ToShortDateString()) == date[inc])
   {
      start = inc;
      inc = 0;
      break;
   }  
}

=/=

int start;
int inc = 0;
while (true)
{
   if (Convert.ToString(dateTimePicker1.Value.ToShortDateString()) == date[inc])
   {
      start = inc;
      inc = 0;
      break;
   }  
   inc++;
}

Still very helpful comments, thanks everyone. Obviously was missing the first date because of an increment, causing an infinite loop.

Answer 1

Try to compare like this

if (dateTimePicker1.Value.ToString("MM/dd/yyyy",
       new System.Globalization.CultureInfo("en-US") == date[inc])

OR

//Considering your date format is MM/dd/yyyy, coz 01/01/2011 doesn't help in uderstanding
//in date format, if it would have been 01/13/2011, it would have helped
if (dateTimePicker1.Value.Date == 
       DateTime.ParseExact(date[inc], "MM/dd/yyyy", 
           new System.Globalization.CultureInfo("en-US")).Date)

Also you can do .Trim() on date[inc] it might help you.

EDIT

When you compare string things to look for

• White Spaces at beginning and at end. Remove them if required using .Trim()
• Case Sensitivity. Do string.Equals(string1, string2, StringComparison.InvariantCultureIgnoreCase)

Hope this works for you.