What is the difference between while and until in VB?

2 years ago
Ava Mitchell
1 minute

In VB, while and until are two keywords used to control loops.

  1. While loop: The while keyword is used to create a loop that executes when a certain condition is true. The code inside the loop will repeat as long as the condition remains true, and will stop when the condition becomes false. The syntax is as follows:
While condition
    ' 循环体代码
End While
  1. Until loop: The until keyword is used to create a loop that will repeatedly execute the code in the loop body until a certain condition becomes true. The code will continue to run while the condition is false, and will stop once the condition evaluates to true. The syntax is as follows:
Do Until condition
    ' 循环体代码
Loop

Therefore, the main difference between “while” and “until” lies in the conditions for loop execution. A “while” loop executes when the condition is true and stops when the condition becomes false, whereas an “until” loop executes when the condition is false and stops when the condition becomes true.

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