Dividing Time slots

[poojavb]

Hello All,

I have 3 combo boxes on my form

1. Doctor Start Time
2. Doctor End Time
3. Doctor Appointment Duration

I want a 4th combo Box that will Start from Doctor's Start Time upto Doctor's End Time with the interval of Appointment Duration

eg. Suppose the Start time is 08:00 and End Time 10:00 with 24 hr clock
the appointment duration is 30 mins

then the 4th comboBox should Display
08:00
08:30
09:00
09:30

Can anyone help me in this

I have done this coding on the basis of Appointment Duration

Dim da As DateTime = FormatDateTime("00:00")
        cboAppTime.Items.Clear()
        If txtDuration.Text = "15" Then
            For xa As Integer = 0 To 95
                cboAppTime.Items.Add(FormatDateTime(da.TimeOfDay.ToString, DateFormat.ShortTime))
                da = da.AddMinutes(15)
            Next
        ElseIf txtDuration.Text = "30" Then
            For xa As Integer = 0 To 47
                cboAppTime.Items.Add(FormatDateTime(da.TimeOfDay.ToString, DateFormat.ShortTime))
                da = da.AddMinutes(30)
            Next
        ElseIf txtDuration.Text = "45" Then
            For xa As Integer = 0 To 31
                cboAppTime.Items.Add(FormatDateTime(da.TimeOfDay.ToString, DateFormat.ShortTime))
                da = da.AddMinutes(45)
            Next
        ElseIf txtDuration.Text = "60" Then
            For xa As Integer = 0 To 23
                cboAppTime.Items.Add(FormatDateTime(da.TimeOfDay.ToString, DateFormat.ShortTime))
                da = da.AddMinutes(60)
            Next
        End If

The above coding shows time from 00:00 to 23:00

Need to proceed further with ur help.

[Pgmer]

See if this helps u...

Try
            Dim starttime As New DateTime
            Dim endtime As New DateTime
            Dim duration As New TimeSpan
            endtime = DateTimePicker2.Text
            starttime = DateTimePicker1.Text
            duration = TimeValue(DateTimePicker2.Text) - TimeValue(DateTimePicker1.Text)
            Dim Dur As Integer = duration.Hours
            Dur = (Dur * 60) / 30

            For i As Integer = 0 To Dur - 1

                cmbTime.Items.Add(starttime.ToString)
                starttime = starttime.AddMinutes(30)
            Next

        Catch ex As Exception

        End Try

[ChrisPadgham]

Rather than calculating the Duration possibly

appointmentTime = starttime
do until appointmentTime >= endtime
    cmbTime.Items.Add(appointmentTime.ToString)
    appointmentTime = appointmentTime.AddMinutes(AppointmentDuration)
loop

note that if Appointment duration does not divide evenly the last appointment will overrun the end time. If this is not acceptable you will need to add the AppointmentDuration to the endTime in the until clause

[poojavb]

See if this helps u...

Try
            Dim starttime As New DateTime
            Dim endtime As New DateTime
            Dim duration As New TimeSpan
            endtime = DateTimePicker2.Text
            starttime = DateTimePicker1.Text
            duration = TimeValue(DateTimePicker2.Text) - TimeValue(DateTimePicker1.Text)
            Dim Dur As Integer = duration.Hours
            Dur = (Dur * 60) / 30

            For i As Integer = 0 To Dur - 1

                cmbTime.Items.Add(starttime.ToString)
                starttime = starttime.AddMinutes(30)
            Next

        Catch ex As Exception

        End Try

This code has helped me a lot...but only one problem....

I want the output in a 24 hr format
and this way

08:00
08:30
.
.
.
.
.
.
12:30
13:00
13:30

How can I proceed with this???

[poojavb]

This code has helped me a lot...but only one problem....

I want the output in a 24 hr format
and this way

08:00
08:30
.
.
.
.
.
.
12:30
13:00
13:30

How can I proceed with this???

I got the answer....

Try
            cboDays.Items.Clear()
            Dim starttime As DateTime = FormatDateTime("00:00")
            Dim endtime As DateTime = FormatDateTime("00:00")
            Dim duration As New TimeSpan
            endtime = TextBox2.Text
            starttime = TextBox1.Text
            duration = TimeValue(TextBox2.Text) - TimeValue(TextBox1.Text)
            Debug.Print("endtime: " + endtime)
            Debug.Print("starttime: " + starttime)
            Debug.Print("duration: " + duration.ToString)
            Dim Dur As Integer = duration.Hours
            Dim Dura As Integer = Integer.Parse(cboTime.Text)
            Do Until starttime >= endtime
                cboDays.Items.Add(FormatDateTime(starttime.TimeOfDay.ToString, DateFormat.ShortTime))
                starttime = starttime.AddMinutes(Dura)
            Loop

        Catch ex As Exception
            Throw ex
        End Try

Thanks to both of u...A tons thanks....