RE: C# Question

Then you'd do an ArrayList of ArrayLists

Or honestly, you make a collection, yourself, which is easy to do in C#
since you can overload the [] operator.

Take care,
Sina
 

-----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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