Control Statements in VB.NET: While-End Loop

In VB.NET, the While-End loop is a control statement used to repeatedly execute a block of code as long as a specific condition is true. The condition is evaluated at the beginning of each iteration of the loop, and if it is true, the loop continues. If it is false, the loop exits, and control is returned to the calling code. In this page, we will discuss the syntax, example, output, explanation, use, important points, and summary of the While-End Loop in VB.NET.

Syntax

The syntax for the While-End loop in VB.NET is as follows:

While condition
    ' code to execute repeatedly
End While

The condition expression is evaluated at the beginning of each iteration of the loop, and if it is true, the loop continues. The loop will terminate only when the condition is false.

Example

Here is an example of using the While-End loop to print the values of integers from 1 to 5 to the console.

Dim i As Integer = 1
While i <= 5
    Console.WriteLine(i)
    i += 1
End While

In this example, the loop will continue executing as long as the value of i is less than or equal to 5. The Console.WriteLine statement will print the value of i to the console, and the i += 1 statement will increment the value of i by 1 at the end of each iteration of the loop.

Output

The output of the above example would be:

1
2
3
4
5

Explanation

A While-End loop is used when you want to execute a block of code repeatedly based on a specific condition. Before each iteration of the loop, the condition is evaluated. If the condition is true, the block of code is executed. The loop will continue to execute as long as the condition remains true. If the condition becomes false, the loop exits, and control is returned to the calling code.

Use

The While-End loop is used when you want to execute a block of code repeatedly based on a specific condition. It is useful in situations where you want to process data based on a certain set of conditions, such as processing user input or data from a file.

Important Points

• The condition in a While-End loop is evaluated at the beginning of each iteration of the loop.
• The loop will continue to execute as long as the condition remains true.
• The While keyword starts the block of code that should be repeated until the condition becomes false.
• The End While keyword marks the end of the block.

Summary

In this page, we discussed the syntax, example, output, explanation, use, important points, and summary of the While-End loop in VB.NET. The While-End loop is a useful control statement when you want to execute a block of code repeatedly based on a specific condition. It is important to remember that the condition is evaluated at the beginning of each iteration of the loop, and the loop will continue to execute as long as the condition remains true.