1. Tutorial 14 – Shipping Time Application Using DateTimes and Timers
Outline
14.1 Test-Driving the Shipping Time Application DateTime Variables Building the Shipping Time Application: Design Elements Creating the Shipping Time Application: Inserting Code Wrap-Up

2. In this tutorial, you will learn to:
Objectives
In this tutorial, you will learn to:
Create and manipulate DateTime variables.
Execute code at regular intervals using a Timer control.
Retrieve DateTime input with a DateTimePicker control.
Group controls using a GroupBox control.

3. 14.1 Test-Driving the Shipping Time Application

4. 14.1 Test-Driving the Shipping Time Application
Figure 14.1　Shipping Time application.
DateTimePicker with up-down arrows
GroupBoxes

5. 14.2 DateTime Variables Keyword new DateTime variable
Calls a structure’s constructor
Example:
DateTime dtmDelivery = new DateTime( , 1, 1, 0, 0, 0 )
Constructors initialize class objects or structure values
DateTime variable
Stores information about a point in time
Contains properties Year, Month, Day, Hour, Minute, and Second

6. 14.2 DateTime Variables
Figure 14.2　DateTime constructor arguments.

7. 14.2 DateTime Variables
Figure 14.3　DateTime methods that perform various calculations.

8. 14.3 Building the Shipping Time Application: Design Elements

9. 14.3 Building the Shipping Time Application: Design Elements

10. 14.3 Building the Shipping Time Application: Design Elements
Figure 14.5　GroupBox controls on the Shipping Time Form.
Newly created GroupBox displaying the text Drop Off
GroupBoxes
Add a second Groupbox to contain drop off time

11. 14.3 Building the Shipping Time Application: Design Elements
Figure 14.6　Adding a Label to a GroupBox.
Before clicking inside the GroupBox
Place a label inside the GroupBox by clicking the Label tab in the Toolbox

12. 14.3 Building the Shipping Time Application: Design Elements
Figure 14.7　DateTimePicker control on the Form.
DateTimePicker control before modification (note that the appearance is similar to a ComboBox)
Add a DateTimePicker to the application by clicking the DateTimePicker control in the Toolbox

13. 14.3 Building the Shipping Time Application: Design Elements
Figure 14.8　Customized DateTimePicker control on the Form.
Up-down arrows for DateTimePicker (note that the appearance is similar to a NumericUpDown control)
Set ShowUpDown property to true

14. 14.3 Building the Shipping Time Application: Design Elements
Figure 14.9　Timer control is displayed in the component tray.
Component tray
Timer control

15. 14.3 Building the Shipping Time Application: Design Elements
Figure 14.10　Rearranging and commenting the control declarations.

16. 14.4 Creating the Shipping Time Application: Inserting Code
Tick event handler
DateTime property Now retrieves current time
Format output
hh:mm:ss tt

17. 14.4 Creating the Shipping Time Application: Inserting Code
Figure 14.11　Inserting code for a Tick event.
Printing the current time

18. 14.4 Creating the Shipping Time Application: Inserting Code
Load event handler
Date stored in dtmCurrentTime
FrmShippingTime_Load event handler
MinDate: earliest date allowed
MaxDate: latest date allowed

19. 14.4 Creating the Shipping Time Application: Inserting Code
Figure 14.12　Storing the current time.
Storing the current time in dtmCurrentTime

20. 14.4 Creating the Shipping Time Application: Inserting Code
MinDate property
Earliest value user can enter
Set to 12:00 AM
MaxDate property
Latest value user can enter
Seafood must remain fresh, so value will be set to one day after MinDate

21. 14.4 Creating the Shipping Time Application: Inserting Code
Figure 14.13　Setting the MinDate and MaxDate properties.
Setting the range of drop-off times

22. 14.4 Creating the Shipping Time Application: Inserting Code
Figure 14.14　Calling the DisplayDeliveryTime method.
Displaying the delivery time

23. 14.4 Creating the Shipping Time Application: Inserting Code
Need to allow user to select a date
Application will calculate delivery time
ValueChanged event handler

24. 14.4 Creating the Shipping Time Application: Inserting Code
Figure 14.15　 Inserting code in the ValueChanged event handler.
Calculating and displaying the delivery time

25. 14.4 Creating the Shipping Time Application: Inserting Code
Figure 14.16　Calling the DepartureTime method.
Determining the departure time
Calculating the travel time
Displaying the delivery time

26. 14.4 Creating the Shipping Time Application: Inserting Code
Figure 14.17　 Inserting method DepartureTime into the application.
Declaring variables

27. 14.4 Creating the Shipping Time Application: Inserting Code
Figure 14.18　Determining the seafood shipment’s flight departure time.
Using the hour value stored in the DateTimePicker to determine departure time
Noon departure time
Noon (the next day) departure time
Midnight departure time

28. 14.4 Creating the Shipping Time Application: Inserting Code
Figure 14.19　Returning the flight departure time.
Returning the departure time

29. ShippingTime.cs (1 of 7)

30. ShippingTime.cs (2 of 7)

31. ShippingTime.cs (3 of 7)

32. ShippingTime.cs (4 of 7)
Displaying the current time
Setting the DateTimePicker’s minimum and maximum values

33. ShippingTime.cs (5 of 7)
Calculating and displaying the delivery time in Las Vegas

34. ShippingTime.cs (6 of 7)
Using a switch statement to determine departure time

35. ShippingTime.cs (7 of 7)