VB.Net - While... End While Loop
It executes a series of statements as long as a given condition is True.
The syntax for this loop construct is −
While condition [ statements ] [ Continue While ] [ statements ] [ Exit While ] [ statements ] End While
Here, statement(s) may be a single statement or a block of statements. The condition may be any expression, and true is logical true. The loop iterates while the condition is true.
When the condition becomes false, program control passes to the line immediately following the loop.
Flow Diagram
Here, key point of the While loop is that the loop might not ever run. When the condition is tested and the result is false, the loop body will be skipped and the first statement after the while loop will be executed.
Example
Live DemoModule loops Sub Main() Dim a As Integer = 10 ' while loop execution ' While a < 20 Console.WriteLine("value of a: {0}", a) a = a + 1 End While Console.ReadLine() End Sub End Module
When the above code is compiled and executed, it produces the following result −
value of a: 10 value of a: 11 value of a: 12 value of a: 13 value of a: 14 value of a: 15 value of a: 16 value of a: 17 value of a: 18 value of a: 19