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الأحد، 30 يونيو 2013

Visual Basic explanation fourth lesson explaining the IF function







Today, God willing, to explain the IF function

IF function In if used Anndma words we want the program choose from a number of things

For example, if the user wrote 1 shows the image of a child even wrote 2 shows pictures footmen, and so on

IF function formulas

Simplest form of the function is
             IF then

Condition clause

End IF

This image is used if there is only one condition
For example
IF text1.text = 5 then

Text2.text = 10

End if

In this program if txt = 1 5 Van txt 2 = 10

The second photo

IF then


Condition clause

Else

If you do not check the condition clause

End if

Example
Work of the secret number \

First, open the Visual
 Create a textbox and command
In the textbox is property passwordchar to star, or as you would like to show PIN

Type in the command this code

Private Sub Command1_Click ()
If Text1.Text = "12345" Then
Msgbox "good password"
Else
Msgbox "wrong password"
End If
End Sub

Explain code
If txt 1 = 12345 showed a message that your password incorrect
Otherwise showed a message that the password wrong
Msgbox meaning show a message to the user


Third formula which in the case of multiple conditions

If then

A result of the first condition
Elseif then

Result of the second condition

Elseif then

Thus,

end if



Now the work of students' grades Assessment Programme

Student is higher than the 85 winning franchise
      Student and higher than the 75 winning is very good
      Student and higher than the 65 winning is good
       Student and higher than the 50 winning be acceptable
    The winning student less than 50 have deposit
Now think about the program interface

Create a textbox to be placed by the degree students
Create a command button command

Now the code in command


Private Sub Command1_Click ()
If Text1.Text> = 85 Then
MsgBox "exellent"

ElseIf Text1.Text> = 75 Then
MsgBox "verygood"
ElseIf Text1.Text> = 65 Then
MsgBox "good"
ElseIf Text1.Text> = 50 Then
MsgBox "Acceptable"
ElseIf Text1.Text <= 50 Then
MsgBox "fail"
End If

End Sub

                                         
  Now run the program and type the numbers to experience the program

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