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GeneralRe: call an api in c# Pin
Member 1212120116-Nov-15 17:50
Member 1212120116-Nov-15 17:50 
AnswerRe: call an api in c# Pin
Gerry Schmitz16-Nov-15 18:40
mveGerry Schmitz16-Nov-15 18:40 
QuestionDocument to represent a document node in a print queue Pin
Tridip Bhattacharjee14-Nov-15 1:08
professionalTridip Bhattacharjee14-Nov-15 1:08 
AnswerRe: Document to represent a document node in a print queue Pin
OriginalGriff14-Nov-15 1:21
mveOriginalGriff14-Nov-15 1:21 
QuestionPrint Queue implementation by linked list class Pin
Tridip Bhattacharjee14-Nov-15 1:06
professionalTridip Bhattacharjee14-Nov-15 1:06 
AnswerRe: Print Queue implementation by linked list class Pin
OriginalGriff14-Nov-15 1:20
mveOriginalGriff14-Nov-15 1:20 
GeneralRe: Print Queue implementation by linked list class Pin
Tridip Bhattacharjee14-Nov-15 5:12
professionalTridip Bhattacharjee14-Nov-15 5:12 
GeneralRe: Print Queue implementation by linked list class Pin
OriginalGriff14-Nov-15 5:29
mveOriginalGriff14-Nov-15 5:29 
An abstract class can have concrete properties, fields, and methods - it just can;t be instantiated. Which means that is you have this:
C#
public abstract class Document
   {
   public Document Next = null;
   }
public class PdfDocument : Document
   {
   }
public class WordDocument : Document
   {
   }

The you can't do this:
C#
Document d = new Document();
Because you can't create an instance of an abstract class.
But you can do this:
C#
Document d = new PdfDocument();
d.Next = new WordDocument();
Because you can create instances of derived concrete classes, and assign them to variables which contain the abstract base class.

It's a bit like cars: Car is an abstract concept, while Ford Fiesta is a specific concrete type of Car, so you can buy one. If you try to go into a dealers and buy "A Car" without wanting any make or model you are going to get some very funny looks...Laugh | :laugh:

You probably don't want the Subject to be part of the abstract base class, unless all Document types will definitely have a Subject - and you certainly don't want the content to be party of the base class because you don't know what it is or what it needs to be stored in. (Any more than you'd put the rear passenger seats in the Car class, because that would cause problems with two seaters - which don't have any - and seven seaters - which might have two rows of rear passenger seats, or two "benches" as in an old Landrover.)
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...

GeneralRe: Print Queue implementation by linked list class Pin
Tridip Bhattacharjee14-Nov-15 5:22
professionalTridip Bhattacharjee14-Nov-15 5:22 
GeneralRe: Print Queue implementation by linked list class Pin
OriginalGriff14-Nov-15 5:35
mveOriginalGriff14-Nov-15 5:35 
GeneralRe: Print Queue implementation by linked list class Pin
Tridip Bhattacharjee14-Nov-15 8:27
professionalTridip Bhattacharjee14-Nov-15 8:27 
GeneralRe: Print Queue implementation by linked list class Pin
Tridip Bhattacharjee14-Nov-15 18:33
professionalTridip Bhattacharjee14-Nov-15 18:33 
GeneralRe: Print Queue implementation by linked list class Pin
OriginalGriff14-Nov-15 23:23
mveOriginalGriff14-Nov-15 23:23 
GeneralRe: Print Queue implementation by linked list class Pin
Tridip Bhattacharjee15-Nov-15 21:14
professionalTridip Bhattacharjee15-Nov-15 21:14 
GeneralRe: Print Queue implementation by linked list class PinPopular
OriginalGriff15-Nov-15 21:25
mveOriginalGriff15-Nov-15 21:25 
QuestionParallel vs Threading Pin
Ger Hayden14-Nov-15 0:22
Ger Hayden14-Nov-15 0:22 
AnswerRe: Parallel vs Threading Pin
Gerry Schmitz14-Nov-15 9:42
mveGerry Schmitz14-Nov-15 9:42 
GeneralRe: Parallel vs Threading Pin
Ger Hayden14-Nov-15 11:27
Ger Hayden14-Nov-15 11:27 
GeneralRe: Parallel vs Threading Pin
Gerry Schmitz14-Nov-15 20:29
mveGerry Schmitz14-Nov-15 20:29 
GeneralRe: Parallel vs Threading Pin
Ger Hayden15-Nov-15 9:50
Ger Hayden15-Nov-15 9:50 
GeneralRe: Parallel vs Threading Pin
Gerry Schmitz15-Nov-15 10:22
mveGerry Schmitz15-Nov-15 10:22 
GeneralRe: Parallel vs Threading Pin
Ger Hayden18-Nov-15 3:24
Ger Hayden18-Nov-15 3:24 
QuestionMoving Data from one form to another Pin
KakitaIppatsu13-Nov-15 14:45
KakitaIppatsu13-Nov-15 14:45 
AnswerRe: Moving Data from one form to another Pin
John Torjo13-Nov-15 14:51
professionalJohn Torjo13-Nov-15 14:51 
GeneralRe: Moving Data from one form to another Pin
KakitaIppatsu13-Nov-15 15:24
KakitaIppatsu13-Nov-15 15:24 

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