The Exit For statement immediately exits the For… Next loop and transfers control to the statement that follows the Next statement. For more information, see Nested Control Structures. You can also nest different kinds control structures within each other. When nesting loops, each loop must have a unique counter variable. ' Append to the StringBuilder every third number ' Create a new StringBuilder, which is usedĭim sb As New () The inner loop decrements a loop counter variable for every iteration of the loop. The outer loop creates a string for every iteration of the loop. Next structures that have different step values. The following example demonstrates nested For. You can nest For loops by putting one loop within another. You determine the number of iterations when you first enter the loop. However, when you expect to run the loop a specific number of times, a For. ' Output: 2 1.75 1.5 1.25 1 0.75 0.5 0.25 0Ī While.End While Statement or Do.Loop Statement works well when you don't know in advance how many times to run the statements in the loop. The Step argument of -.25 reduces the value by 0.25 on each iteration of the loop. In the following example, the number variable starts at 2 and is reduced by 0.25 on each iteration of the loop, ending after the value of number reaches 0. In the following example, the index variable starts with a value of 1 and is incremented with each iteration of the loop, ending after the value of index reaches 5. Next structure when you want to repeat a set of statements a set number of times. For more information about array declarations, see Dim Statement. You can also use this keyword in the Select.Case Statement and in array declarations. The To keyword is used in this statement to specify the range for the counter. Terminates the definition of the For loop. Transfers control to the next loop iteration. One or more statements between For and Next that run the specified number of times. The amount by which counter is incremented each time through the loop. For more information, see Counter Argument later in this topic. Repeats a group of statements a specified number of times.

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