ASP.net dateADD help

[StealthRT]

Hey all, i have the following code to populate a dropdown to coinside with a companies 2008-2010 calander year. This is the output:

2008 Period 1: 11/30/2008 - 12/27/2008
2008 Period 2: 12/28/2008 - 1/24/2009
2009 Period 3: 1/25/2009 - 2/21/2009
2009 Period 4: 2/22/2009 - 3/21/2009
2009 Period 5: 3/22/2009 - 4/18/2009
2009 Period 6: 4/19/2009 - 5/16/2009
2009 Period 7: 5/17/2009 - 6/13/2009
2009 Period 8: 6/14/2009 - 7/11/2009
2009 Period 9: 7/12/2009 - 8/8/2009
2009 Period 10: 8/9/2009 - 9/5/2009
2009 Period 11: 9/6/2009 - 10/3/2009
2009 Period 12: 10/4/2009 - 10/31/2009
2009 Period 13: 11/1/2009 - 11/28/2009
2009 Period 1: 11/29/2009 - 12/26/2009
2009 Period 2: 12/27/2009 - 1/23/2010
2010 Period 3: 1/24/2010 - 2/20/2010
2010 Period 4: 2/21/2010 - 3/20/2010
2010 Period 5: 3/21/2010 - 4/17/2010
2010 Period 6: 4/18/2010 - 5/15/2010
2010 Period 7: 5/16/2010 - 6/12/2010
2010 Period 8: 6/13/2010 - 7/10/2010
2010 Period 9: 7/11/2010 - 8/7/2010
2010 Period 10: 8/8/2010 - 9/4/2010
2010 Period 11: 9/5/2010 - 10/2/2010

and here is the code for it:

        Dim dt2009Start As DateTime
        Dim dtTempStart, dtTempEnd As DateTime
        Dim dtTempNow As DateTime
        Dim nTemp As Integer
        Dim itemPeriod As ListItem
        Dim timesAround As Integer

        dt2009Start = Convert.ToDateTime("11/30/2008")
        dtTempStart = dt2009Start
        dtTempEnd = dtTempStart.AddDays(27)

        ddlInvoicePeriods.Items.Clear()

        dtTempNow = DateTime.Now()
        nTemp = 1
        timesAround = 0

        While (dtTempNow > dtTempEnd)
            If nTemp = 12 Then
                If timesAround = 0 Then
                    'dtTempStart = Convert.ToDateTime("10/25/2009")
                    'dtTempEnd = Convert.ToDateTime("11/18/2009")
                End If
            ElseIf nTemp = 14 Then
                If timesAround = 0 Then
                    dtTempStart = Convert.ToDateTime("11/29/2009")
                    dtTempEnd = Convert.ToDateTime("12/26/2009")
                    nTemp = 1
                    timesAround += 1
                End If
            End If

            itemPeriod = New ListItem()
            itemPeriod.Text = dtTempStart.Date.Year.ToString() & " Period " & nTemp.ToString() & ": " & dtTempStart.Date.ToShortDateString() & " - " & dtTempEnd.Date.ToShortDateString()
            itemPeriod.Value = dtTempStart.Date.ToShortDateString() & "-" & dtTempEnd.Date.ToShortDateString()
            ddlInvoicePeriods.Items.Add(itemPeriod)
            itemPeriod = Nothing

            Debug.Print(dtTempStart.Date.Year.ToString() & " Period " & nTemp.ToString() & ": " & dtTempStart.Date.ToShortDateString() & " - " & dtTempEnd.Date.ToShortDateString())

            dtTempStart = dtTempEnd.AddDays(1)
            dtTempEnd = dtTempStart.AddDays(27)
            nTemp += 1
        End While

        If nTemp = 12 Then
            dtTempStart = Convert.ToDateTime("12/27/2009")
            dtTempEnd = Convert.ToDateTime("11/18/2009")
        ElseIf nTemp = 13 Then
            dtTempStart = Convert.ToDateTime("11/19/2009")
            dtTempEnd = Convert.ToDateTime("12/16/2009")
        End If

        itemPeriod = New ListItem
        itemPeriod.Text = dtTempStart.Date.Year.ToString() & " Period " & nTemp.ToString() & ": " & dtTempStart.Date.ToShortDateString() & " - " & dtTempEnd.Date.ToShortDateString()
        itemPeriod.Value = dtTempStart.Date.ToShortDateString() & "-" & dtTempEnd.Date.ToShortDateString()
        ddlInvoicePeriods.Items.Add(itemPeriod)
        itemPeriod = Nothing

As you may have noticed, the output only goes to 2010 (10/2/2010) which should go all the way to 12/31/2011.

**Problem being:**

It should start out like so:

2008 Period 13: Nov 30 - Dec 27
2009 Period 1: Dec 28 - Jan 24
2009 Period 2: Jan 25 - Feb 21
2009 Period 3: Feb 22 - Mar 21
...
2009 Period 13: Nov 29 - Dec 26
2010 Period 1: Dec 27 - Jan 23
2010 Period 2: Jan 24 - Feb 20
..
2010 Period 13: Nov 28 - Dec 25
2011 Period 1: Dec 26 - Jan 22
2011 Period 2: Jan 23 - Feb 19
...etc

Any help would be awesome as i am at my end of trying to figure out what i am doing wrong! )

David

[StealthRT]

Solved:

Dim dt2009Start As DateTime
    Dim dtTempStart, dtTempEnd As DateTime
    Dim dtTempNow As DateTime
    Dim nTemp As Integer
    Dim itemPeriod As ListItem
    Dim timesAround As Integer
    Dim dtReallyEnd As DateTime
    Dim year As Integer

    year = 2008
    dt2009Start = Convert.ToDateTime("11/30/2008")
    dtTempStart = dt2009Start
    dtTempEnd = dtTempStart.AddDays(27)
    dtReallyEnd = Convert.ToDateTime("12/31/2011")


    dtTempNow = DateTime.Now()
    nTemp = 13
    timesAround = 0

    While (dtReallyEnd > dtTempEnd)
       If nTemp = 14 Then
           nTemp = 1
            timesAround += 1
            year += 1
        End If


        itemPeriod = New ListItem()
        itemPeriod.text = year.ToString() & " Period " & nTemp.ToString() & ": " & dtTempStart.Date.ToShortDateString() & " - " & dtTempEnd.Date.ToShortDateString()
        itemPeriod.value = dtTempStart.Date.ToShortDateString() & "-" & dtTempEnd.Date.ToShortDateString()
        ddlInvoicePeriods.Items.Add(itemPeriod)
        itemPeriod = Nothing

        Debug.Print(dtTempStart.Date.Year.ToString() & " Period " & nTemp.ToString() & ": " & dtTempStart.Date.ToShortDateString() & " - " & dtTempEnd.Date.ToShortDateString())

        dtTempStart = dtTempEnd.AddDays(1)
        dtTempEnd = dtTempStart.AddDays(27)
        nTemp += 1
    End While

    If nTemp = 14 Then
        nTemp = 1
        timesAround += 1
        year += 1
    End If

    itemPeriod = New ListItem
    itemPeriod.text = dtTempStart.Date.Year.ToString() & " Period " & nTemp.ToString() & ": " & dtTempStart.Date.ToShortDateString() & " - " & dtTempEnd.Date.ToShortDateString()
    itemPeriod.value = dtTempStart.Date.ToShortDateString() & "-" & dtTempEnd.Date.ToShortDateString()
    ddlInvoicePeriods.Items.Add(itemPeriod)
    itemPeriod = Nothing

David