RE: C# Question
- From: "Sina Bahram" <sbahram@xxxxxxxxx>
- To: <programmingblind@xxxxxxxxxxxxx>
- Date: Sun, 30 Mar 2008 15:38:13 -0400
Use a vector datatype
Then do vectors of vectors
Take care,
Sina
-----Original Message-----
From: programmingblind-bounce@xxxxxxxxxxxxx
[mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Chris Hofstader
Sent: Sunday, March 30, 2008 2:59 PM
To: programmingblind@xxxxxxxxxxxxx
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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