During our 10^th laboratory activity on February 20, 2008,this is the

hardest or difficult part  for us because we will use a class and also it's method in

our activity entitled The Gross Pay.

              We also add properties into a class.

            In our 9^th laboratory activity, February 13 2008, we discussed about class Object-Oriented Program or OOP. Maybe it's hard to understand but they say you can learned it time-to-time. Class has also components: Properties, Constructors, there are two types of Constructor the default constructor and with parameters. In Class we used and applied the Encapsulation. We also learned to add a form.

            When we are doing program, I know it's hard to create a program using a  class. Until there were a time that I've understand to use class and I am being interested in class.

                   Our 8^th laboratory activity we applied the key trapping in our program. We used key trapping for eliminating unacceptable keystroke. Key press to allow you to input Letters/Numbers.

We use this formula:

Select case e.keychar

Case cchar (“”) to cchar (“”)

e.Handled=false

case else

e.Handled=true

End select

            On how to edit:

Sendkeys.Send (“{home} + {end}”)

            I’ve learned also how to use error provider. It become Error Provider if you enter unacceptable keys, it will display an error message.

            During our 7^th laboratory in the month of January, we discussed about Checkbox, Vscrollbar and Hscrollbar. Checkbox is to permit multiple selections from a number of options. List box its look like combo box.

Formula:

 Listbox.Items.Add (Textbox1.text)

textbox1.text=””

Textbox1.focus.

To adds the item in the list box and to remove we use this formula: i=listbox1.selectionIndex

 If i>0 then

 listbox1.item.removeAt (i)

Else

Msgbox.show (“Select it First”, List Box is Empty)

        I have learned the functions of combobox, vscrollbar and hscrollbar. The difference between  the hscrollbar and vscrollbar. 

           In our 6^th laboratory activity we created an ACNE CAR RENTALS where we used combo box to select what type of car we are going to use then compute the car rental, to its basic charge, mileage charge and the insurance. We also used Select Case .The second activity was the months and days.

The formula for the month:

For nd=1 to d combobox2.item.add (nd)

Next nd

         And if you click the month the numbers of days will appear. The third activity was about apartment rental and the number of furnished. The fourth activity was the time consumed.

               In our fourth laboratory, we do activities, the Date function, Number of hours and the Basis Pay. On the Date function, we dispaly the day, month and year. The format of date is mm / dd / yyyy. In the second activity, there is formula in getting the number of hours. For example, you enter your birthdate, month and year and then you deducted it from the date. month, and year today. 

              I've learned to used the function of date in Microsoft Visual Basic 2005. Also easy to get the total number of your age. The total number of month and date and also the hours, minutes and seconds.

                 Our third laboratory activity, the first activity is about Net Pay. To get the net pay, we should enter the basic and the deduction. The second activity is showiing a message on the textbox ans the third activity is the same as the second activity but there is also difference between the second activity.

         The graded activity that is given to us is about Math Tutor. There are four types of Math Tutor the follwing are:

• Addition
• Subtraction
• Division
• Multiplication

In the program the we are doing, we used the toolbox, Label.The formula that we are used are the following:

• For Addition:

         Label1 + Label2 = Label3

• For Subtraction:

         Label1 - Label2 = Label3

• For Division:

         Label1 / Label2 = Label3

• For Multiplication:

         Label1 * Label2 = Label3

     After using this all the types of Math Tutor, the correct answer will post on the first form that we've created. 

             In our second laboratory activity we create a program about area of square. In creating this program, we use this formula:

area = Length * Width * height.

To get the total value of the area of the square. and for our graded activity we compute a grade, In this we use class. To get the value of the grade, we used this formula:

grade = ( ( midterm_grade / 3) + ( 2 * fianl_grade ) / 3)

         In the data grade, we use six forms.

         I've learned to get the value of area and grade.