如何将值赋给类中的数组类变量 [英] How to assign value to an array class variable which is inside a class

问题描述

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;
            }
        }
}

这两个类都在* .cs文件中。我正在尝试访问fulfillingOutletIdField变量并为其分配一个vlue，如下所示。

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

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

但我在最后一行出错了，说数组索引越界



任何帮助都将不胜感激..



谢谢！

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

Any help would be appreciated..

Thanks !

推荐答案

查看您的代码：

Look at your code:

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

您声明一个包含一个元素的数组，并尝试访问它的第二个元素 - C＃使用基于零的索引我确定您记得！ ：笑：





即使我添加

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

WPObj.fulfillmentList[0].fulfillingOutletId = "1234";

我有对象参考未设置...错误，我正在寻找一个aswer




好​​的 - 你会的。

想一想：你为WPObj分配了一个元素的数组，但是这个数组不会自动用新对象填充它 - 它是一个数组null值。

您需要创建数组，用对象填充它们，然后访问它们。

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.

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

老实说，我会使用List而不是Array，并创建类中的集合实例，而不是将它留给外界。

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.

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