c# - 在非默认结构构造函数中调用结构方法

Question

我有一个非常简单的例子，我用它来学习 C# 中的结构:

struct ScreenPosition
{
    // These are the two private members of the structure 
    private int x; 
    private int y;

    private int RangeCheckedX(int xPos)
    {
        if (xPos < 0 || xPos > 1280)
        {
            throw new ArgumentOutOfRangeException("X");
        }
        return xPos;
    }

    private int RangeCheckedY(int yPos)
    {
        if (yPos < 0 || yPos > 1024)
        {
            throw new ArgumentOutOfRangeException("Y");
        }
        return yPos;
    }

    // Declaring the non-default constructor
    public ScreenPosition(int X, int Y)
    {
        this.x = RangeCheckedX(X); // ERROR HERE
        this.y = RangeCheckedY(Y); // ERROR HERE
    }

    // Declaring  the property X - Follows a syntax. See the C# quick reference sheet 
    public int X
    {
        get
        {
            return this.x;
        }

        set
        {
            this.x = RangeCheckedX(value);
        }
    }
    // Declaring  the property X - Follows a syntax. See the C# quick reference sheet 
    public int Y
    {
        get
        {
            return this.y;
        }

        set
        {
            this.y = RangeCheckedY(value);
        }
    }
}

我在“ERROR HERE”评论行收到此错误:

The 'this' object cannot be used before all of its fields are assigned to

在非默认构造函数中调用结构体方法给结构体成员赋值是否违法？

Answer 1

您可以将这些方法设为静态并且它会起作用，但是在分配所有字段之前您不能调用非静态方法。