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VB.NET multi-dimensional array can be understood as "array of arrays", which has more "dimension" concept than one-dimensional array. Complex information can be recorded with multidimensional arrays. For example, in order to track every pixel on a computer screen, you need to reference its X and Y coordinates, and you should use a multi-dimensional array to store the value.

The declaration syntax for VB.NET multidimensional arrays is as follows:

Dim ArrayName (VarNumber1

VarNumber2,.,VarNumberN)

As Type

All the rules of one-dimensional array can be extended to multi-dimensional array above two dimensions. For example, the following statement declares a two-dimensional array of 10 × 10 and a three-dimensional array of 4 × 10 × 15:

Dim MatrixA (10) As Double Dim MultiD (4) 10) As Single

The total number of elements is the product of the dimensions of each dimension, that is, 100 and 600.

Note: when increasing the dimension of the array, the storage space occupied by the array will be greatly increased, so be careful with multi-dimensional arrays. Be more careful when using "Object" arrays, as they require more storage space. With loop operands, you can use "For" loop nesting to effectively deal with multi-dimensional arrays. For example, each element is assigned a value in "MatrixA" based on its position in the array:

Dim I,J As Integer

Dim MatrixA (10 and 10)

As Double

For iTunes 0 to 9

For Junior 0 to 9

MatrixA (iMagazine J) = Ifex 10J

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