I have one array which is base 1 (rather than 0) and I am trying to use
array.copy to copy it into a new array. I get the error:
Unable to cast object of type 'System.Byte[*]' to type 'System.Byte[]'.
I think this is because the new array, by default is base 0. Without
creating a wasteful loop and handling byte for byte, how can I create a base
0 array from a base 1 array?
-Jerry
4  1019 
Jerry,
All arrays are Base 0 arrays, with the conversion from VB6 to VB 2002 they
have made the in my opinion wrong simple decission to add 1 element after
every array in VB rather then let the microsoft.Visua lBasic functins start
on 0 (while logical using the first as 1). The VB6 lobby was very strong in
those days, in fact the wanted absolute no changes in VB6.
We have to deal with that now.
To give you a sample how you can copy. However if you have non fixed arrays
it is better to avoid them there are more alternatives for that, than I can
write here.
\\\\
Dim A() As Byte = {1}
Dim B(A.Length - 1) As Byte
A.Copy(A, B, A.Length)
///
Cor
"Jerry Spence1" <12*@dfgh.comsc hreef in bericht
news:R6******** *************** *******@posted. plusnet...
>I have one array which is base 1 (rather than 0) and I am trying to use
array.copy to copy it into a new array. I get the error:
Unable to cast object of type 'System.Byte[*]' to type 'System.Byte[]'.
I think this is because the new array, by default is base 0. Without
creating a wasteful loop and handling byte for byte, how can I create a
base 0 array from a base 1 array?
-Jerry
Thank you Cor. That is very informative. My problem is solved!
-Jerry
"Cor Ligthert[MVP]" <no************ @planet.nlwrote in message
news:9B******** *************** ***********@mic rosoft.com...
Jerry,
All arrays are Base 0 arrays, with the conversion from VB6 to VB 2002 they
have made the in my opinion wrong simple decission to add 1 element after
every array in VB rather then let the microsoft.Visua lBasic functins start
on 0 (while logical using the first as 1). The VB6 lobby was very strong
in those days, in fact the wanted absolute no changes in VB6.
We have to deal with that now.
To give you a sample how you can copy. However if you have non fixed
arrays it is better to avoid them there are more alternatives for that,
than I can write here.
\\\\
Dim A() As Byte = {1}
Dim B(A.Length - 1) As Byte
A.Copy(A, B, A.Length)
///
Cor
"Jerry Spence1" <12*@dfgh.comsc hreef in bericht
news:R6******** *************** *******@posted. plusnet...
>>I have one array which is base 1 (rather than 0) and I am trying to use
array.copy to copy it into a new array. I get the error:
Unable to cast object of type 'System.Byte[*]' to type 'System.Byte[]'.
I think this is because the new array, by default is base 0. Without
creating a wasteful loop and handling byte for byte, how can I create a
base 0 array from a base 1 array?
-Jerry
"Jerry Spence1" <12*@dfgh.comsc hrieb:
>I have one array which is base 1 (rather than 0) and I am trying to use
array.copy to copy it into a new array. I get the error:
Unable to cast object of type 'System.Byte[*]' to type 'System.Byte[]'.
I think this is because the new array, by default is base 0. Without
creating a wasteful loop and handling byte for byte, how can I create a
base 0 array from a base 1 array?
Take a look at 'Buffer.BlockCo py' to efficiently copy one byte array to
another.
--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://dotnet.mvps.org/dotnet/faqs/>
>
Take a look at 'Buffer.BlockCo py' to efficiently copy one byte array to
another.
True,
(But does not describe direct so easily the problem and therefore less
documentative, but for high use, for sure to take).
Cor This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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