June 2003
Intermediate to advanced
800 pages
34h 20m
English
Content preview from Microsoft® Visual Basic® .NET Programmer's CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Resize an Array
Problem
You need to expand the dimensions of an array.
Solution
The Visual Basic .NET ReDim statement with the Preserve keyword.
Discussion
The ReDim keyword allows you to specify new dimensions for an array after defining it. However, the existing items will be lost, unless you specify the Preserve keyword. When using Preserve, you can only resize the last dimension of the array. Thus, if you are resizing a two-dimensional array, you can only expand the second dimension. If you are resizing a one-dimensional array, you can resize the first (and only) dimension.
Dim IntArray(10, 10) As Integer ' (Configure the array here.) ' Add ten more columns to every row ReDim Preserve IntArray(10, 20) ' The following statement will generate an exception. ...
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