C# 从类中获取值到 mainForm

Question

我有以下类(class):

    public class CreateNewWeapon : BaseWeapon
{

    string[] weaponNames = { "Dragonslayer", "SoopaDoopa", "Mastersword" };

    private BaseWeapon newWeapon;

    public void CreateWeapon()
    {

        Random rnd = new Random();
        int x = rnd.Next(0, weaponNames.Length);

        newWeapon = new BaseWeapon();

        newWeapon.ItemName = weaponNames[x];
        newWeapon.Strength = rnd.Next(0, 5);
        newWeapon.Vitality = rnd.Next(0, 5);
        newWeapon.Intelligence = rnd.Next(0, 5);
    }

}

并且想在我的主窗体中获取值，在第二个窗体中设置标签，如下所示:

        private void button2_Click(object sender, EventArgs e)
    {

        newWep = new Items.CreateNewWeapon();

        newWep.CreateWeapon();

        ShowWeapon shWep = new ShowWeapon();

        shWep.Label6 = newWep.Strength.ToString();
        shWep.Visible = true;
    }

但是值甚至没有转移到第一个表单，它们在哪里丢失了？

Answer 1

您的代码存在多个问题:

1. 私有(private) BaseWeapon newWeapon；当您将变量声明为私有(private) 时，CreateNewWeapon 类之外的任何对象都无法访问它。
2. public void CreateWeapon() 您的方法的返回值为 void。您应该将其更改为 BaseWeapon 并将 newWeapon 返回给调用者

我认为您应该将代码更改为:

public class CreateNewWeapon : BaseWeapon
{

    string[] weaponNames = { "Dragonslayer", "SoopaDoopa", "Mastersword" };

    public BaseWeapon CreateWeapon()
    {

        Random rnd = new Random();
        int x = rnd.Next(0, weaponNames.Length);

        var newWeapon = new BaseWeapon();

        newWeapon.ItemName = weaponNames[x];
        newWeapon.Strength = rnd.Next(0, 5);
        newWeapon.Vitality = rnd.Next(0, 5);
        newWeapon.Intelligence = rnd.Next(0, 5);

        return newWeapon;
    }

}

在 button2_Click 方法中，这样调用它:

var weapon = newWep.CreateWeapon();