Null Reference Exception problem

Hi everybody.

I'm making a project with Arduino and I need to store a lot of values in a array of doubles.

The declaration of this array is this one:

Code:

Dim array()() As Double

When I try to ReDim it I got this error:

Of course, if I don't use ReDim, it gives me the same error when I try to populate it.

Imho, there's no sense in this error .-.

Any suggestion?

Try initially declaring the array with a size of (0) ? ..that'll give it 1 item and might get rid of the exception.

Code:

Dim array(0)(0) As Double

I haven't messed with multi-dimensional arrays.
Leaving for work right now sry, hope that helps, else will try again tonight.

Originally Posted by abuckau907

Try initially declaring the array with a size of (0) ? ..that'll give it 1 item and might get rid of the exception.

Code:

Dim array(0)(0) As Double

I haven't messed with multi-dimensional arrays.
Leaving for work right now sry, hope that helps, else will try again tonight.

If I try to declare it with both dimension it says me that I can only declare the first one. I mean, I can only do this:

Code:

Dim array(0)() as Double

multi dimensions.... umm...
I/m probably wrong.... but....

within VB dont you declare it as for example:

Code:

dim array(0, 0) as integer

like.... I don't think I'm meant to be saying this as I'm probably in the wrong...
but that's the way i made my calender... using

Code:

Date(intDays, intMonth, intYear)

Originally Posted by utherson601

multi dimensions.... umm...
I/m probably wrong.... but....

within VB dont you declare it as for example:

Code:

dim array(0, 0) as integer

like.... I don't think I'm meant to be saying this as I'm probably in the wrong...
but that's the way i made my calender... using

Code:

Date(intDays, intMonth, intYear)

As I told before, you can't declare the array and give the dimension at the same time. You need to use ReDim for multi-dim.

Originally Posted by Sixx93

As I told before, you can't declare the array and give the dimension at the same time. You need to use ReDim for multi-dim.

What you are declaring is not a multidimensional array, its a jagged array.
what i declared was a multidimensional array.
MINE will work.

Resource

Jagged Array Usage

Originally Posted by Sixx93

utherson601 was right about the syntax:

Works for me.

Ok, thanks to all, I'll try it shortly.

Edit:
Seems to work. Thanks!

Null Reference Exception problem

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