Question

我在这里错过了一些简单的东西，我知道。我的私有变量是“未分配”，而是来自我（有限）的知识。我错过了什么？我看过其他类似的问题，但我不太明白答案（甚至是问题！）。请帮忙。

public class Weapon
{
    private string mName;
    private double mRange;
    private double mDamage;

    public string Name
    {
       get { return mName; }
       set { mName=value; }
    }

    public double Range
    {
       get { return mRange; }
       set 
       {
          if (value >= 0)
              mRange=value;
          else
              throw new ArgumentException("Invalid Range");
       }
    }

    public double Damage
    {
       get { return mDamage; }
       set
       {
          if (value >= 0)
              mDamage=value;
          else
              throw new ArgumentException("Invalid Damage");
       }
    }

    public Weapon(string n, double d)
    {
       n = Name;
       d = Damage;
    }
    public Weapon (string n, double r, double d)
    {
       n = Name;
       r = Range;
       d = Damage;
    }

Answer 1

你有向后的构造函数。

此：

public Weapon(string n, double d)
{
    n = Name;
    d = Damage;
}
public Weapon (string n, double r, double d)
{
    n = Name;
    r = Range;
    d = Damage;
}

应该是这样的：

public Weapon(string n, double d)
{
    Name = n;
    Damage = d;
}
public Weapon (string n, double r, double d)
{
    Name = n;
    Range = r;
    Damage = d;
}

Answer 2

试试这个：

public class Weapon
{
    private string _name;
    private double _range;
    private double _damage;

    public string Name
    {
        get
        {
            return _name;
        }
        set
        {
            _name = value;
        }
    }

    public double Range
    {
        get
        {
            return _range;
        }
        set
        {
            if (value >= 0)
                _range = value;
            else
                throw new ArgumentException("Invalid Range");
        }
    }

    public double Damage
    {
        get
        {
            return _damage;
        }
        set
        {
            if (value >= 0)
                _damage = value;
            else
                throw new ArgumentException("Invalid Damage");
        }
    }

    public Weapon(string n, double d)
    {
        Name = n;
        Damage = d;
    }
    public Weapon(string n, double r, double d)
    {
        Name = n;
        Range = r;
        Damage = d;
    }
}

变量从未分配给C＃

2 个答案: