How to use FOR EACH loop in VB.NET
Whenever you face a situation in programming to repeat a task for several times (more than one times ) or you have to repeat a task till you reach a condition, in these situations you can use loop statements to achieve your desired results.
FOR NEXT Loop, FOR EACH Loop , WHILE Loop and DO WHILE Loop are the Commonly used loops in Visual Basic.NET 2005 ( VB.NET 2005) .
For Each Loop
FOR EACH Loop usually using when you are in a situation to execute every single element or item in a group (like every single element in an Array, or every single files in a folder or , every character in a String ) , in these type of situation you can use For Each loop.
For Each [Item] In [Group] [loopBody] Next [Item]
Item : The Item in the group
Group : The group containing items
LoopBody : The code you want to execute within For Each Loop
Let's take a real time example , if you want to display the each character in the website name "HTTP://NET-INFORMATIONS.COM" , it is convenient to use For Each Loop.
1. siteName = "HTTP://NET-INFORMATIONS.COM" 2. For Each singleChar In siteName 3. MsgBox(singleChar) 4. Next
Line 1: Assigning the site name in a variable
Line 2: This line is extracting the single item from the group
Line 3: Loop body
Line 4: Taking the next step
When you execute this program you will get each character of the string in Messagebox.