获取错误:字段初始值设定项无法引用非静态字段,方法或属性

Question

错误消息是:

Error   1   A field initializer cannot reference the non-static field, method, or property 'AmazingPaintball.Form1.thePoint'    

这是构造函数:

namespace AmazingPaintball
{
class Paintball
{
    public Point startPoint;


    public Paintball(Point myPoint)
    {
        startPoint = myPoint;


    }

这是导致错误的代码:

    Point thePoint = new Point(50, 50);
    Paintball gun = new Paintball(thePoint);

Answer 1

你没有展示足够的背景,但我怀疑你有类似的东西:

class Game
{
    Point thePoint = new Point(50, 50);
    Paintball gun = new Paintball(thePoint);
}

正如编译器所说,字段初始值设定项不能引用另一个字段或实例成员.解决方案很简单 - 将初始化放在构造函数中:

class Game
{
    Point thePoint;
    Paintball gun;

    public Game()
    {
        thePoint = new Point(50, 50);
        gun = new Paintball(thePoint);
    }
}

假设你确实需要两个领域,请注意.如果您只需要一个gun字段,您可以使用:

class Game
{
    Paintball gun = new Paintball(new Point(50, 50));
}

(顺便说一句,我强烈建议不要以变量名开头the.前缀不会添加任何额外的信息......它只是噪音.)