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The application of VB.NET development platform occupies a great advantage in the field of programming. Developers can use this language to achieve many functional requirements. The number of times of execution of the loop body can be precisely controlled by using the VB.NET 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.

Example 2.7 (02-07.aspx) uses a VB.NET For/Next loop statement to display the contents of a two-dimensional array.

< % Dim arrData(1,2) Dim intI,intJ as Integer arrData(0,0)=12 arrData(0,1) =13 arrData(0,2) =14 arrData(1,0) =15 arrData(1,1) =16 arrData(1,2) =17 For intI=0 To 1 For intJ=0 To 2 Response.Write (arrData (intI,intJ) & " ") Next Response.Write ("< br>

")

'After one line is displayed, wrap to show the next line.

Next

% >

As you can see, it is very convenient to use VB.NET For/Next loops to display arrays, a data structure that can determine the number of loops.

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