There are several forms of VB.NET loop

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There are three forms of VB.NET cycle: For/Next loop, While/End While loop, Do/Loop loop and For/Each loop.

1. For/Next cycle

The number of times of execution of the loop body can be precisely controlled by using the For/Next loop. The syntax of the For/Next loop is as follows:

For counter = startvalue To endvalue [Step stepvalue] [statements] [Exit For] [statements] Next

Among them, the Step keyword can be used to define the growth mode of the loop counter, and the value of stepvalue (positive or negative) can be adapted to different needs. The Exit For statement allows you to exit the loop body directly under certain conditions. Use For/Next statements to display the contents of a two-dimensional array.