我得到一个错误与此代码:为什么我不能继承这个变量?
An object reference is required for the non-static field, method, or property
我试图从派生类继承货号变量把它放在一个构造,但由于某种原因它不接受它。
全码:
public class InvItem
{
protected int itemNo;
protected string description;
protected decimal price;
public InvItem()
{
}
public InvItem(int itemNo, string description, decimal price)
{
this.itemNo = itemNo;
this.description = description;
this.price = price;
}
public int ItemNo
{
get
{
return itemNo;
}
set
{
itemNo = value;
}
}
public string Description
{
get
{
return description;
}
set
{
description = value;
}
}
public decimal Price
{
get
{
return price;
}
set
{
price = value;
}
}
public virtual string GetDisplayText(string sep)
{
return itemNo + sep + description + " (" + price.ToString("c") + ")";
}
}
public class Plant : InvItem
{
private decimal size;
public Plant()
{
}
public Plant(int itemNumber, string description, decimal price, decimal size) : base(itemNo, description, price)
{
this.Size = size;
}
public decimal Size
{
get
{
return size;
}
set
{
size = value;
}
}
public override string GetDisplayText(string sep)
{
return base.GetDisplayText(sep) + " (" + size + ")";
}
}
它发生在植物类的构造函数与参数。我试图将其设置为公开,私人和保护,但它们都产生相同的结果。
变量'itemNo'不存在,正确的变种是'公共厂(INT itemNumber,字符串描述,小数价格,小数的大小):基地(itemNumber,说明,价格)' – 2014-12-05 00:49:14