Loop Statements in VB.NET
In this article I will show looping statements FOR LOOP, DO...UNTIL LOOP, DO..LOOP WHILE and WHILE...END WHILE loop in Visual Basic .NET.
Visual Basic allows a procedure to be repeated many times as long as the processor until a condition or a set of conditions is fulfilled. This is generally called looping . Looping is a very useful feature of Visual Basic because it makes repetitive works easier. There are several type of looping structure in Visual Basic.NETLoop allows you to repeat an action for a number of times or until a specified condition is matched.
A For loop iterates a certain number of times, the value of the counter variable changing each iteration.
A for loop has the following syntax:
For counter = start to end [step increment]
In executing a FOR..NEXT loop, Visual Basic completed the following step
- Sets counter equal to start.
- Tests to see if counter is greater than end, so it exit the loop if counter is less than end. if it is, it exits the loop.
- Executes the statement in block.
- Repeats the statements
Example shows the FOR loop:
Dim i As Integer
For i = 1 To 10
A Do...Loop Until loop is a loop that runs until the loop's condition is true, the condition being checked after each iteration of the loop.
Loop Until condition
Example shows the DO..Until loop:
' DO..UNTIL loop in VB.NET
Do Until i > 10
i = i + 1
Do...Loop While loop:
A Do...Loop While loop runs until the loop's condition becomes false. Its condition is checked after each iteration of the loop.
Loop While condition
Example Shows the DO while Loop:
'DO..LOOP WHILE in VB.NET
i = i + 1
Loop While i < 10
While...End While loop:
The While...End While loop executes a block of statement as long as condition is true.
The While loop has the following syntax:
Example shows the While...End While loop:
' While...End While loop in VB.NET
While i < 10
i = i + 1 End While