Port Said International Schools – National Section
Hand Out
Better education for future generations
Date: 21/4/2013
Grade: 10
Multiplication table
Public Class Form1
Dim fnum, maxnum As Integer
Private Sub btn_ShowTable_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles btn_ShowTable.Click
fnum = Val(txt_FirstNumber.Text)
maxnum = Val(txt_MaxNumber.Text)
Dim result As Integer
For index As Integer = 1 To maxnum
result = fnum * index
lb_Table.Items.Add(fnum & " * " & index & " = " & result)
Next
End Sub
Private Sub btn_Clear_Click(ByVal sender As System.Object, ByVal
e As System.EventArgs) Handles btn_Clear.Click
lb_Table.Items.Clear()
txt_FirstNumber.Clear()
txt_MaxNumber.Text = ""
End Sub
Private Sub btn_Exit_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles btn_Exit.Click
End
End Sub
End Class
Random Picture Position
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Timer1.Tick
Randomize()
PictureBox1.Top = Rnd() * 115
PictureBox1.Left = Rnd() * 200
End Sub
Port Said International Schools – National Section
Hand Out
Better education for future generations
Date: 21/4/2013
Grade: 10
Show Flags Project( Using buttons)
For this project, you want to insert 3 picture boxes, and 3 buttons.
Private Sub Form1_Load(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles MyBase.Load
PictureBox1.Visible = False
PictureBox2.Visible = False
PictureBox3.Visible = False
End Sub
Private Sub Button1_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles Button1.Click
PictureBox1.Visible = True
PictureBox2.Visible = False
PictureBox3.Visible = False
End Sub
Private Sub Button2_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles Button2.Click
PictureBox1.Visible = False
PictureBox2.Visible = True
PictureBox3.Visible = False
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button3.Click
PictureBox1.Visible = False
PictureBox2.Visible = False
PictureBox3.Visible = True
End Sub
Show Flags Project( Using Combo Box)
For this project, you want to insert a picture boxes, and an image list.
Private Sub ComboBox1_SelectedIndexChanged(ByVal sender
As System.Object, ByVal e As System.EventArgs) Handles
ComboBox1.SelectedIndexChanged
PictureBox4.Image = ImageList1.Images(ComboBox1.SelectedIndex)
End Sub
Port Said International Schools – National Section
Hand Out
Better education for future generations
Date: 21/4/2013
Grade: 10
Dice Game Project
For this project, you want to insert a picture box, an image list, a timer and a
button.
Public Class Form1
Dim randomImage As Integer
Private Sub Button1_Click(ByVal sender As System.Object, ByVal
e As System.EventArgs) Handles Button1.Click
If Timer1.Enabled = True Then
Timer1.Enabled = False
Else
Timer1.Enabled = True
End If
End Sub
The code in the button (The previous code) used to enable and disable the
timer.
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles Timer1.Tick
Randomize()
randomImage = Rnd() * 5
PictureBox1.Image = ImageList1.Images(randomImage)
End Sub
End Class
The code in the timer used to get a random number from 0 to 5 and then assign
this number as an index to the image list (to get a random image) then put this
image in the picture box.
Please notice the randomImage variable that is declared in the class scope.
Port Said International Schools – National Section
Hand Out
Better education for future generations
Date: 21/4/2013
Grade: 10
Sum Numbers Project
For this project, you want to insert 3 text boxes, 3 labels and a button.
Public Class Form1
Dim startnum, endnum As Integer
Dim total As Integer
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles Button1.Click
total = 0
startnum = Val(TextBox1.Text)
endnum = Val(TextBox2.Text)
For index As Integer = startnum To endnum
total = total + index
Next
TextBox3.Text = total
End Sub
End Class
Please notice the startnum, endnum and total variables that are declared in
the class scope.
The code assigned with the button used to:
1.
2.
3.
4.
Declared a total variable and assign a zero value to it.
Get the value of the text box1 and assigned it to the startnum variable.
Get the value of the text box2 and assigned it to the endnum variable.
Make a loop from the value of the startnum variable to the endnum
value:
a. In each iteration, the total will be equals to the old total + the
index.
5. After finishing the loop, the value of the total is assigned to the textbox3