Late Binding Issue

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Miro - 18 Aug 2006 17:01 GMT

VB 2003 and Im still new to vb, so i hope i can explain this as best I can.

I have a variable defined as such: ( simple example )

Dim AVariableOfSorts(,) As Object = _
{ _
{"Last", "String", 20}, _
{"First", "String", 20} _
}

I had to define it as an object so I can have different variable types all
within the same array.
( unless there is another way to do this )

What im getting is an error "Option Strict On Disallows Late Binding" when
I try to do anything with an array element.

For example
AVariableOfSorts(1, 1) = ""

I would like to keep Strict On on

What am I missing ? or how do I get around this issue?

I beleive I know the difference between binding. - Simply put:
1. Dim X as String is early binding and Dim X as Object ,...
X.GetType.ToString would be late binding and would
take longer during running.

Im not sure what to search for in Help / or Online to help myself out.

Thanks

Miro

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Herfried K. Wagner [MVP] - 18 Aug 2006 18:48 GMT

"Miro" <mironagy@golden.net> schrieb:

> VB 2003 and Im still new to vb, so i hope i can explain this as best I
> can.
[quoted text clipped - 18 lines]
>
> I would like to keep Strict On on

\\\
DirectCast(AVariableOfSorts(1, 1), String) = ""
///

> What am I missing ? or how do I get around this issue?

Maybe it's better to define a class with properties for the first and second
string and the integer number. Then you can create an array of this type
('Dim Items() As Foo').

Signature

M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://dotnet.mvps.org/dotnet/faqs/>

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rmacias - 18 Aug 2006 19:49 GMT

You can try using an ArrayList

Dim listOfObjs As ArrayList = New ArrayList

listOfObjs.Add("Last")
listOfObjs.Add("String")
listOfObjs.Add("20")

However, I like Herfried's idea better in creating a class for this
information and then having an array (or a strongly typed collection) for
them. It really depends on what you are trying to accomplish.

> VB 2003 and Im still new to vb, so i hope i can explain this as best I can.
>
[quoted text clipped - 30 lines]
>
> Miro

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tommaso.gastaldi@uniroma1.it - 18 Aug 2006 20:12 GMT

Yes Herfried is right. Go for a class anc collections. Forget about
bidimensional arrays of objects. I have never seen them in a meaningul
.net program.

tommaso

rmacias ha scritto:

> You can try using an ArrayList
>
[quoted text clipped - 42 lines]
> >
> > Miro

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Miro - 18 Aug 2006 21:45 GMT

Ive never used classes in the programming languages ive used.

So that is my next lesson.
I stayed away from the array lists cause I didnt like how all the items have
to be the same "var type "

I just want to store a whole bunch of data in 1 variable with many different
vartypes and change the
variable elements as i need to.

Someone once pointed me on this newgroup to the object, so now im at the
point to use the "object" var
i created and im running into this.

So a class it will be - as long as i can achieve the above posted.
I can always make something like "dim bla(,) as String" and strigify
everything and val it as i need to cause i know
which elements are going to be numeric.
I just didnt think it would be this hard to store different variable types
/ variables all in one array.

So im off to read about classes .... my next post might be about them :)

Thanks.

> Yes Herfried is right. Go for a class anc collections. Forget about
> bidimensional arrays of objects. I have never seen them in a meaningul
[quoted text clipped - 53 lines]
>> >
>> > Miro

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tommaso.gastaldi@uniroma1.it - 18 Aug 2006 22:01 GMT

Hi Miro. This is not a poetry.

Classes must be your breath.

Arraylist, Hashtable, Sorted List,
your father, mother and brother.

Comparers your best friends ...

Anyone wants to add more lines ? :)

Tommaso

Miro ha scritto:

> Ive never used classes in the programming languages ive used.
>
[quoted text clipped - 78 lines]
> >> >
> >> > Miro

Reply to this Message

Miro - 18 Aug 2006 23:28 GMT

Believe it or not they arent the easiest thing to grasp.

In theory or on a page or in a book they are fine... but i tell ya
some old languages ive used far too long probably look just as confusing
back.

I will breath Classes this weekend,
and most likely have some questions.

Comparers and friends are still not all that clear either.

M.

> Hi Miro. This is not a poetry.
>
[quoted text clipped - 101 lines]
>> >> >
>> >> > Miro

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Cor Ligthert [MVP] - 19 Aug 2006 06:37 GMT

Miro,

Reading your message is the answer, you should not use a programming
language as VB.Net, C#, C++ or Java.

Just keep it by VB script or JavaScript.

Just my thought reading your message.

Cor

> Ive never used classes in the programming languages ive used.
>
[quoted text clipped - 79 lines]
>>> >
>>> > Miro

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Miro - 22 Aug 2006 14:22 GMT

I would like to do it all in VB.
Learn it all as one of you would actaully do it in vb.
I knew javascript pretty good back in 99' to about 2002 ... and then i
stopped using it. So Im not sure how much
it has changed since then.

Im fiddling with classes now and I can create a Class and property so im
close ( or i think im close ).
So Im assuming now that I can create property's when im all done I will have
1 Class with 3 properties that will be an array,
that will technically be each element of the array i was trying to create.

M.

ps...
Oh... Herfried K. Wagner... the
DirectCast(AVariableOfSorts(1, 1), String) = "" didnt work, it had the same
issue with late binding or something.

> Miro,
>
[quoted text clipped - 91 lines]
>>>> >
>>>> > Miro

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Cor Ligthert [MVP] - 22 Aug 2006 15:46 GMT

Miro,

If you create a class, something as

\\\
Public Class whatever
Private whatevervalue as string
Private whateelsevalue as string
Public property TheFirstValue as string
Get
return whatevervalue
End Get
Set (by value as string)
whatevervalue = value
end set
'The same for secondvalue
End Class
///

Than you can do
Dim myArray as list of (whatever)

all typed in this message so watch typos or other errros.

I hope this helps,

cor

>I would like to do it all in VB.
> Learn it all as one of you would actaully do it in vb.
[quoted text clipped - 110 lines]
>>>>> >
>>>>> > Miro

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