Loop Assist

Hi there,
i just wanted to let you know that it worked, i did have to tweak my code ever so slightly because initially it was giving me error of Systemout.outofspace.exception.... somthing like that  and since you'r example was using a dropdown list and and was not, i had to change it a bit to the following:
 
public void setWeeks(string startDate, string endDate)
{
stDate = new DateTime();
enDate = new DateTime();
this.stDate = System.DateTime.Parse(startDate);
this.enDate = System.DateTime.Parse(endDate);


DateTime currDate = new DateTime();
List<DateTime> endWeeksList = new List<DateTime>(1);
sevenDays = new TimeSpan(7, 0, 0, 0); // represents 7 days
while (stDate < enDate)
{
if (startDatetimepcker.Value.ToString() == enDate.ToShortDateString().ToString())
{
return;
}
//currDate = stDate;
if ((stDate = stDate + sevenDays) > enDate)
{
//currDate = enDate;
endWeeksList.Add(enDate);
}
else
{
//stDate = stDate.Add(sevenDays);
endWeeksList.Add(stDate);
}
//startDate = startDate.Add(sevenDays);
//endWeeksList.Add(startDate);
weeksCounter = weeksCounter + 1;
//startDate.Add(sevenDays);

}
but it works, thanks again.

I did not try that code where I should have - try this
public void setWeeks(string startDate, string endDate)
{
DateTime stDate = new DateTime();
DateTime enDate = new DateTime();
DateTime currDate = new DateTime();
List<DateTime> dtsList = new List<DateTime>();
TimeSpan sevenDays = new TimeSpan(7, 0, 0, 0); // represents 7 days
ArrayList endWeeksList = new ArrayList();
stDate = System.DateTime.Parse(startDate); // convert string date to System.DateTime representation
enDate = System.DateTime.Parse(endDate);
if (textBox1.Text == enDate.ToShortDateString().ToString())
{
return;
}
else if (stDate < enDate)//start date earlier than end date
{
currDate = stDate;
if ((currDate = currDate + sevenDays) > enDate)
{
endWeeksList.Add(enDate.ToShortDateString());
textBox1.Text = textBox2.Text;
listBox1.Items.Add(enDate.ToShortDateString().ToString());
}
else
{
endWeeksList.Add(stDate.ToShortDateString());
stDate = stDate + sevenDays;
listBox1.Items.Add(stDate.ToShortDateString().ToString());
textBox1.Text = (stDate.ToShortDateString().ToString());
}
}

}
 
public void poo(string startDate, string endDate)
{
DateTime stDate = new DateTime();
DateTime enDate = new DateTime();
DateTime currDate = new DateTime();
TimeSpan sevenDays = new TimeSpan(7, 0, 0, 0); // represents 7 days
ArrayList endWeeksList = new ArrayList();
stDate = System.DateTime.Parse(startDate); // convert string date to System.DateTime representation
enDate = System.DateTime.Parse(endDate);

while (stDate < enDate)
{
if (textBox1.Text == enDate.ToShortDateString().ToString())
{
return;
}
currDate = stDate;
if ((currDate = currDate + sevenDays) > enDate)
{
endWeeksList.Add(enDate.ToShortDateString());
textBox1.Text = textBox2.Text;
listBox1.Items.Add(enDate.ToShortDateString().ToString());
}
else
{

endWeeksList.Add(stDate.ToShortDateString());
stDate = stDate + sevenDays;
listBox1.Items.Add(stDate.ToShortDateString().ToString());
}
}
}

thanks for the assist Frogleg, since your last post i noticed that when ruinning the app, if i set the start date to 6th Jan and end date to 19th jan, it should show:
13th Jan(+7 days = 20th so add end date to list instead as 20th is greater than 19th)
19th Jan
but would strangely not add 7 days but add 14 days with the code you suggested in your last post and only display only jan 20th skipping 13th Jan(hope that is clear). Any reason why it adds 14 days?
Since then i've tried to tweak it a little by doing this:
 
while (startDate < endDate)
{
int result = DateTime.Compare(startDate, endDate);
if ((startDate = startDate + sevenDays) > endDate)
{
endWeeksList.Add(endDate);
break;
}
else
{
startDate = startDate.Add(sevenDays);
endWeeksList.Add(startDate);
weeksCounter = weeksCounter + 1;
//startDate.Add(sevenDays);
}
}
 
With the updated code above, it still keeps adding 14 days after the first date. I know that i'm comparing it again, but i just wanted to see what happens. So again i tried to do something different as follows:
while (startDate < endDate)
{
int result = DateTime.Compare(startDate, endDate);
if (result > 0)
{
endWeeksList.Add(endDate);
break;
}
else
{
startDate = startDate.Add(sevenDays);
endWeeksList.Add(startDate);
weeksCounter = weeksCounter + 1;
//startDate.Add(sevenDays);
}
}
This time it shows(using same dates as above):
13th Jan
20th Jan - why does it show this??
Is there any other way for me to tweak the code a little so it does not go over my end date?

insert an if statement before - endWeeksList.Add(stDate.ToShortDateString());
if ((stDate = stDate + sevenDays)>enDate)
{
so if stdate later than endate add textbox2.text to endWeeksList
}
something like that - there are the basics, so see what you come up with

Yes, you are on the rigth track now Frogleg  although at present, it is only check if the date is < enDate,  how can i check if it is equal or over the end date? When it is over the end date or equal to end date. place the end date (that the user  has selected or in the case of your zip project, 02/02/2011),  at end of the list: then print out results. How can i check for those conditions? i changed the loop in function 'poo' by adding an IF statment as follows but iit does not display the end date at the end of the list.
 
public void poo(string startDate, string endDate)
{
DateTime stDate = new DateTime();
DateTime enDate = new DateTime();
TimeSpan sevenDays = new TimeSpan(7, 0, 0, 0); // represents 7 days
ArrayList endWeeksList = new ArrayList();
stDate = System.DateTime.Parse(startDate); // convert string date to System.DateTime representation
enDate = System.DateTime.Parse(endDate);

while (stDate < enDate)
{
endWeeksList.Add(stDate.ToShortDateString());
stDate = stDate + sevenDays;
listBox1.Items.Add(stDate.ToShortDateString().ToString());
if (stDate == enDate || stDate > enDate)
{
listBox1.Items.Add(enDate.ToShortDateString().ToString());
}
}
 
ie. 9th jan
16th Jan
23 jan
30 Jan - adding 7 would equal to 6th Feb BUT since it is over end date being 2nd Feb, finsh of by adding the end date to list
2nd Feb - last date to be printed not 6th feb.
 

Hi yes, sorry about that, since that code i've made some adjustments and write now it seeems that it does not go into my foreach loop. I did message boxes to check and it goes into my setWeeks function but when i place a message box in the loop it does not go in.  I did a check on the number of items and the capacity but it seems it does not show anything, so i believe that the problem is that the values are not going into my endWeeksList. Any reason why?

first. i have placed the start date in a list which is of type DateTime

List<DateTime> dtsList = new List<DateTime>();
dtsList.Add(startDate);
and i changed the loop to a foreach loop as follows:
 

 
 
public void setWeeks()
{
sevenDays = new TimeSpan(7, 0, 0, 0); // represents 7 days
List<DateTime> dtsList = new List<DateTime>();
dtsList.Add(startDate);
 
foreach(DateTime dt in dtsList)
{
if (dt.Add(sevenDays) < enDate)
{
MessageBox.Show("Inside setWeeks");
endWeeksList.Add(dt);

}
else if (dt.Add(sevenDays) == enDate) // if same date set it to end date and add to list
{

endWeeksList.Add(endDate);
break;
}
else if (dt.Add(sevenDays) > enDate) // if over the end date then place end date to list
{

endWeeksList.Add(endDate);
break;
}
MessageBox.Show("dates " + endWeeksList);
}
 
 
private void submittbtn_Click(object sender, EventArgs e)
{
conDB();
setProject();
setWeeks();
 
// sql code skipped
MessageBox.Show( "Row inserted");
Console.WriteLine("\nCapacity: {0}", endWeeksList.Capacity);
Console.WriteLine("Count: {0}", endWeeksList.Count);
//MessageBox.Show("sdfs"+ endDate); 
//this.Close();

}
 

Console.WriteLine("\nCapacity: {0}", endWeeksList.Capacity);
Console.WriteLine("Count: {0}", endWeeksList.Count);
   //MessageBox.Show("sdfs"+ endDate); 
   //this.Close();
   
  }

When i build i get no errors, when selecting a start date e.g 3rd Jan and end date e.g 31st Jan, i am expecting all the values in my endWeeksList to show the following dates:
(writing 'jan' as short hand in this thread)
10th Jan 2010
17th Jan 2010
24th Jan
31th Jan
In the submit button code as above, i am calling the setWeeks function, but when i click the 
submit button i don't get any values. I know that using a 'break' is 
not the best coding standard but i just want to make sure that it works.

I am sorry, but I still don't understand.
 
You ask "how do i set the value of dts" but I see no dts.

What i want to do is set the end week dates for each week for example. If we have a start date being 3rd Jan and an end date of 31st Jan.
Add 7 to the start date which would be 10th Jan, then compare IF this value is ealier, the same or later than the end date. Since it is not, add this date ie. 10th Jan to my list. Then add 7 again to the 10th(start of new week) which will be 17th Jan and compare to see if it is ealier, the same or later than the start date. Again this is ealier than 31st Jan so add this date to the list and so on......
I have refined my code to the following:
 
public void setWeeks()
{
stDate = new DateTime();
enDate = new DateTime();
List<DateTime> dtsList = new List<DateTime>();
sevenDays = new TimeSpan(7, 0, 0, 0); // represents 7 days
endWeeksList = new ArrayList(1);

stDate = System.DateTime.Parse(startDate); // convert string date to System.DateTime representation
enDate = System.DateTime.Parse(endDate);

dtsList.Add(stDate); // store the start date in the list
//endOfWeekDates = stDate.Add(sevenDays);

foreach (DateTime dt in dtsList)
{
if (dt.Add(sevenDays) < enDate)
{
endWeeksList.Add(dt);
}
else if (dt.Add(sevenDays) == enDate) // if same date add to list
{
dt.Equals = enDate;
endWeeksList.Add(dt);
}
else if (dt.Add(sevenDays) > enDate) // if over the end date set dt equal to end date and then add to list
{
dt.Equals = enDate;
endWeeksList.Add(dt);
}


}
MessageBox.Show("Dates are " + endWeeksList.ToString());
In my last two IF statements, how do i set the value of dts equal to the enDate variable?

My head is spinning reading you question about earlier/ later etc - need the abridged version
For list use count
List<int> list = new List<int>();
list.Add(1);
list.Add(2);
list.Add(3);
list.Add(4);
// Count with the Count property.
int c = list.Count;
MessageBox.Show(Convert.ToString(c));