[ProBowlUK]

Hi

Not sure if this belongs here or in ASP.
Read several textbooks and tutorials, but can't seem to get complete understanding.

Problem is with ARRAYS and ReDim Preserve

Supposing you have an array of 4 houses with their details ...
PRICE, Desc, Location .... arrHouses(4,3)
To add another detail (eg: Type) is straight forward.
To add another house with Redim, you have to turn the array around -
(3,4) to become (3,5). How is that done ?


Can anyone give a really clear explanation of Dynamic Arrays, also for creating and using Objects for the same kind of webpage.


Cheers

[Yeroon]

Maybe this an idea?:

Code:

<% 
Dim arrAttributes(3) '3 = attributes
Dim arrHouses(2) ' 2= houses

'attributes house 1
arrAttributes(0) = "1A"
arrAttributes(1) = "1B"
arrAttributes(2) = "1C"

'set house attributes
arrHouses(0) = arrAttributes

'attributes house 2
ReDim arrAttributes(3) ' ReDim no preserve, so we get new array
arrAttributes(0) = "2A"
arrAttributes(1) = "2B"
arrAttributes(2) = "2C"
'set house attributes
arrHouses(1) = arrAttributes


'redim house array to hold 3 houses. use preserve, to preserve data
ReDim Preserve arrHouses(3)
ReDim arrAttributes(3) ' ReDim no preserve, so we get new array
arrAttributes(0) = "3A"
arrAttributes(1) = "3B"
arrAttributes(2) = "3C"
'set house attributes
arrHouses(2) = arrAttributes

Response.Write(arrHouses(0)(0))
Response.Write(arrHouses(1)(0))
Response.Write(arrHouses(2)(0))


%>

Output: 1A2A3A

[Yeroon]

PS. you cant ReDim the first dimension

Taken from MSDN:

'ReDim' can only change the right-most dimension

A ReDim statement attempted to use the Preserve keyword to change a dimension of an array that is not the last dimension. When using Preserve, you can resize only the last dimension of an array. For all other dimensions, you must specify the same size as for the existing array.

Reversing wont help you, since this will only resort the data within the array. It wont change the array structure in any way.