RE: C# Question
- From: "Chris Hofstader" <chris.hofstader@xxxxxxxxxxx>
- To: <programmingblind@xxxxxxxxxxxxx>
- Date: Sun, 30 Mar 2008 17:18:33 -0400
The way it's set up is that I need to store instances of the object itself.
I'm trying to rethink my way through another approach to simplify things a
bit.
-----Original Message-----
From: programmingblind-bounce@xxxxxxxxxxxxx
[mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Ricks Place
Sent: Sunday, March 30, 2008 4:15 PM
To: programmingblind@xxxxxxxxxxxxx
Subject: Re: C# Question
I'm back for a second, an Arraylist is only one dimensional if I remember.
I'll do a little googling on another computer while I do some background
work on this one and see if I can find something. You want to put what
exactly into your array?
Are you trying to store indexed elemental datatypes or are you wanting to
store objects? Are you trying to store instances of the class itself?
Rick USA
----- Original Message -----
From: "Chris Hofstader" <chris.hofstader@xxxxxxxxxxx>
To: <programmingblind@xxxxxxxxxxxxx>
Sent: Sunday, March 30, 2008 3:15 PM
Subject: RE: C# Question
> Thanks Rick,
>
> Sina had most of the answer and I just found an article online on some
> programming site that told me to use an ArrayList instead of an Array and
> all of my problems should be solved. I haven't looked at the
> documentation
> on ArrayList yet and haven't given it a try yet.
>
> cdh
>
> -----Original Message-----
> From: programmingblind-bounce@xxxxxxxxxxxxx
> [mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Ricks Place
> Sent: Sunday, March 30, 2008 3:09 PM
> To: programmingblind@xxxxxxxxxxxxx
> Subject: Re: C# Question
>
> I'm not sure about auto sizing arrays. I thought they would resize too but
> not worked in C# in 3 or so years. If you know the max size and it's not
> huge you could just set the max size in each dimension for initial testing
> to make sure everything else is working like the instantiation. I have to
> do
>
> some things but will be back in awhile and see if I can dig something up.
> I
> have never assigned class objects, just int and strings to arrays in the
> old
>
> days but I don't see why objects would be diferent.
> Also, it seems i remember the c# syntax using the variable type in the
> first
>
> position of a definition.
> int MyArray[][]; Or something like that.
> Sorry I can't dig into it right now but look for an array definition using
> an object Data type.
> I'll be back later today to help if I can.
> Sina may have had the answer, over my head but he is really advanced.
> Rick USA
> ----- Original Message -----
> From: "Chris Hofstader" <chris.hofstader@xxxxxxxxxxx>
> To: <programmingblind@xxxxxxxxxxxxx>
> Sent: Sunday, March 30, 2008 2:59 PM
> Subject: RE: C# Question
>
>
>> This is my first venture into multidimensional C# arrays. Prior to
>> Sina's
>> message I thought they grew as needed but that seems to have been a false
>> assumption. I've been digging through documentation and learned that my
>> initial declaration was indeed wrong. The "dataTable" in my example
>> isn't
>> from my code and was only meant to act as an illustration.
>>
>> So, if arrays do not resize dynamically, how can I start with a table of
>> unknown number of rows and columns and store them in an array?
>>
>> Thanks,
>> cdh
>>
>> -----Original Message-----
>> From: programmingblind-bounce@xxxxxxxxxxxxx
>> [mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Ricks Place
>> Sent: Sunday, March 30, 2008 2:53 PM
>> To: programmingblind@xxxxxxxxxxxxx
>> Subject: Re: C# Question
>>
>> Hi Chris:
>> How adept are you with C# Arrays? I ask because the format of the
>> definition
>>
>> just looks wierd somehow, not looked at C# in a long time. Also,
>> dataTable
>> might be treading on the DataTable keyword or the array was not
>> instantiated.
>> If you are adept at using C# arrays I'll guess it is something I've just
>> not encountered, assigning objects in an array. Otherwise I'll dig into
>> the
>> docs for Arrays and see if I can find anything.
>> Rick USA
>> ----- Original Message -----
>> From: "Chris Hofstader" <chris.hofstader@xxxxxxxxxxx>
>> To: <programmingblind@xxxxxxxxxxxxx>
>> Sent: Sunday, March 30, 2008 2:26 PM
>> Subject: C# Question
>>
>>
>>> Hi,
>>>
>>> I have a class which, for purposes of illustration, I'll call MyClass.
>>> I
>>> want to declare a two dimensional array of this class so I can have a
>>> set
>>> of
>>> rows and columns within. I don't know the ultimate size of the array so
>>> I
>>> declare it with empty brackets.
>>>
>>> For instance:
>>>
>>> MyArray[][] dataTable; // This compiles without error
>>>
>>> but, in the code, if I state:
>>>
>>> dataTable[0][0] = new MyClass();
>>>
>>> I get an exception about a NULL assignment when the code is executed.
>>>
>>> I had thought that .Net arrays declared without the "fixed" keyword
>>> would
>>> grow dynamically and that the Array type overloaded the brackets to
>>> ensure
>>> the sort of exception I'm getting doesn't happen.
>>>
>>> Obviously, I'm doing something quite wrong but I'm having trouble
>>> finding
>>> examples of C# arrays of anything more complex than int or String.
>>>
>>> Please help.
>>>
>>> Thanks,
>>> cdh
>>>
>>> Chris Hofstader
>>> CUNY, BSO, ATG, Odds and Ends
>>> email: cdh@xxxxxxxxxxxxx
>>> Blog: http://www.blindconfidential.blogspot.com
>>> Skype: BlindChristian
>>> phone: 727-896-6393
>>>
>>>
>>>
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