How to assign value to an array class variable which is inside a class

Question

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C#

public partial class OrderWS
{
    private FulfillmentWS[] fulfillmentListField;
    public FulfillmentWS[] fulfillmentList
     {
         get
        {
           return this.fulfillmentListField;
         }
         set
         {
          this.fulfillmentListField = value;
         }
      }
}

public partial class FulfillmentWS
{
   private string fulfillingOutletIdField;
   public string fulfillingOutletId
        {
            get
            {
                return this.fulfillingOutletIdField;
            }
            set
            {
                this.fulfillingOutletIdField = value;
            }
        }
}

Both the classes are in same *.cs file. I'm trying to access fulfillingOutletIdField variable and assign a vlue to it, as below.

C#

OrderWS WPObj = new OrderWS();
WPObj.fulfillmentList = new FulfillmentWS[1];       WPObj.fulfillmentList[1].fulfillingOutletId = "1234";

But I've an error in last line, saying "Array Index Out of bounds"

Any help would be appreciated..

Thanks !

Posted 24-Jul-15 21:40pm

Chaitanya Phani Kumar

Updated 26-Jul-15 21:59pm

VICK

v2

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OriginalGriff · Answer 1 · 2015-07-24T22:16:00

Look at your code:

C#

WPObj.fulfillmentList = new FulfillmentWS[1];
WPObj.fulfillmentList[1].fulfillingOutletId = "1234";

You declare an array with one element, and that try to access the second element of it - C# uses zero based indexes I'm sure you remember! :laugh:

"Even if I add
C#

WPObj.fulfillmentList[0].fulfillingOutletId = "1234";
I've "Object reference not set..." error, I'm looking for an aswer"

Well yes - you will.
Think about it: You allocated an array of one element to WPObj, but that array doesn't automatically fill itself with new objects - it's an array of null values.
You need to create the array, fill it with objects, and then access them.

C#

WPObj.fulfillmentList = new FulfillmentWS[1];
WPObj.fulfillmentList[0] = new FulfillmentWS();
WPObj.fulfillmentList[0].fulfillingOutletId = "1234";

To be honest, I'd use a List rather than an Array, and create the collection instance inside the class, rather than leaving it up to the outside world.