How to convert byte to negative

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VB

Dim m(5), x(5) As Byte
        For i As Integer = 0 To 4
            m(i) = i
        Next
        x(2) = -m(4)'Here it shows error
        MsgBox(x(2))

The line at x(2) = -m(4) shows an Error. :-O
Is there any method to convert a byte value to it's -ve equivalent and store it in another byte variable????

Posted 17-Oct-10 0:43am

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3 solutions

Solution 3

Thanks Everyone I have casted it to short and it works great

:cool::cool::cool::cool::cool:

Posted 17-Oct-10 2:08am

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OriginalGriff · Accepted Answer · 2010-10-17T01:01:00

Solution 1

You can't.
Byte is an UNSIGNED data type (MSDN on Byte[^])
Since it has no sign, it cannot be negative!

In future, post the error message as well - it helps us to work out what you are having difficulties with.

Posted 17-Oct-10 1:01am

OriginalGriff

Nish Nishant · Accepted Answer · 2010-10-17T02:01:00

Solution 2

You can cast it to an int or a short, then flip the sign - but you'd need to change your design a little to accommodate for non-byte storage.

Posted 17-Oct-10 2:01am

Nish Nishant