1. For...Next Statements

2. For...Next Syntax
Repeats a group of statements a specified number of times.
For counter = start To end [Step step]
[statements]
[Exit For]
Next [counter]
The counter can't be a Boolean or an array element.
The step argument can be either positive or negative.
After all statements in the loop have executed, step is added to counter.
Any number of Exit For statements may be placed anywhere in the loop as an alternate way to exit. Exit For is often used after evaluating of some condition, for example If...Then, and transfers control to the statement immediately following Next.

3. For...Next Statement
When the number of times a loop should be executed is known in advance, a For…Next loop should be used.
For i = m To n
statement(s)
Next i
control variable (counter)
initial value
terminating value
body

4. For…Next Example Private Sub cmdDisplay_Click() Dim i As Integer
'Display a row of 10 stars
picOutput.Cls
For i = 1 To 10
picOutput.Print "*";
Next i
End Sub

5. For…Next Example Private Sub cmdDisplay_Click()
Dim sum As Single, num As Integer
sum = 0
For num = 1 To 99 Step 2
sum = sum + num
Next num
picOutput.Print "The sum is"; sum
End Sub
The subroutine calculates the sum of the odd numbers from 1 through 99.

6. Private Sub cmdReverse_Click()
Dim m As Integer, j As Integer
Dim temp As String, strWord as String
m = Len(txtWord.Text)
strWord = txtWord.Text
temp = ""
For j = m To 1 Step -1
temp = temp & Mid(strWord, j, 1)
Next j
picTranspose.Print temp
End Sub

7. Nested For...Next Example
Private Sub cmdDisplay_Click()
Dim Words, Chars As Integer
Dim MyString As String
MyString = “”
For Words = 10 To 1 Step -1
For Chars = 0 To 9
MyString = MyString & Chars
Next Chars
MyString = MyString & “ ”
Next Words
picOutput.Print MyString
End Sub
This example uses the For...Next statement to create a string that contains 10 instances of the numbers 0 through 9, each string separated from the other by a single space. The outer loop uses a loop counter variable that is decremented each time through the loop.

8. Private Sub cmdDisplay_Click()
Dim j As Integer, k As Integer
picTable.Cls
For j = 1 To 4
For k = 1 To 4
picTable.Print j; "x"; k; "="; j * k,
Next k
picTable.Print
Next j
End Sub