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Class Instantiation for multiple arrays

Posted on 2011-09-26
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Last Modified: 2012-05-12
Hi all

Given the class below..
I need to create an instance of it and populate it with data.

I.e
Invoice varInvoice = new Invoice

varInvoice(FileType varXML, int varTransactionID, byte Data  )

given that byte is read from file..  and Given that I need to create and array type  Invoices[] varInvoices,
i.e Invoices[] will contain list of different invoices.. 1..n invoices..

Thanks in Advnace
public partial class Invoice {
        
        private string fileTypeField;
        
        private string transactionIDField;
        
        private byte[] dataField;
        
        /// <remarks/>
        public string FileType {
            get {
                return this.fileTypeField;
            }
            set {
                this.fileTypeField = value;
            }
        }
        
        /// <remarks/>
        public string TransactionID {
            get {
                return this.transactionIDField;
            }
            set {
                this.transactionIDField = value;
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(DataType="base64Binary")]
        public byte[] Data {
            get {
                return this.dataField;
            }
            set {
                this.dataField = value;
            }
        }
    }

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Question by:ZURINET
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3 Comments
 
LVL 20

Accepted Solution

by:
Daniel Van Der Werken earned 500 total points
ID: 36599861
I'm not sure I understand your question in whole.  You just want to instantiate a list of the class?

Just use the List<T> generic:

List<Invoice> invoiceList = new List<Invoice>();

Your constructor could assign the values:

public Invoice( string fileType, string transID, byte[] data )
{
   this.fileTypeField = fileType;
   this.transactionIDField = transID,
   this.dataField = data;
}

You would have to instantiate the byte[] data and fill it before instantiating the class with the constructor.

To fill in all the invoices, just loop them:

for ( int i = 0; i < somecount; i++ )
{
   // Get the FileType, TransID, data, etc...
   Invoice inv = new Invoice( fileType,  transID, data );
   if ( !invoiceList.Contains( inv ) )
   {
      invoiceList.Add( inv );
   }
}

That will fill in your List (typed array) of invoices.  Is this what you're looking for?
0
 

Author Comment

by:ZURINET
ID: 36599893

Hi Dan7el
Given that I have a requirement to use array i.e Invoices []

How would that look like?

Thanks
0
 
LVL 20

Expert Comment

by:Daniel Van Der Werken
ID: 36600702
Well, you'd have to know how many elements of the array you needed before hand, or have some mechanism for "dynamically" allocating new elements for each array.  That can be done of course, it's just a tad messy.

Given the same construcor:

int numElements = 60;
Invoice[] invoices = new Invoice[60];

for( int index = 0; index < numElements; index++ )
{
   // again, get the data and stuff.
   invoices[index] = new Invoice( fileType, transID, data );
}
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