从Windows窗体应用程序获取值，并将其传递回main方法

Question

I am working on my final project, and I have a hit a wall. The arrays that are created and defined from the Form are being sent to the Main method, but I cannot further alter them later.

public string[] ShipTypes
    {
        get
        {
            string[] ships = new string[6];
            ships[0] = "Galaxy Class";
            ships[1] = "Galaxy Class";
            ships[2] = "Galaxy Class";
            ships[3] = "Galaxy Class";
            ships[4] = "Galaxy Class";
            ships[5] = "BattleCruiser";
            return ships;

        }
    }

but after I go to change the values

public void verifyButton_Click(object sender, EventArgs e) {
if (shipSelected1 == birdOfPrey || shipSelected1 == battleCruiser)
        {
            kShips++;
            if (shipSelected1 == birdOfPrey)
            {
                birdCount++;
                ShipTypes;
                ShipNames[0] = name1.Text;
                ShipShields[0] = shieldValue1;

            }
            else
            {
                battleCount++;
                ShipTypes[0] = battleCruiser;
                ShipNames[0] = name1.Text;
                ShipShields[0] = shieldValue1;
            }
        }

nothing happens at all, it keeps the original values from the initalization

Answer 1

ShipTypes's get definition guarantees that, regardless of what you set the value of that array, return that local ships array you created. Change your get .

* When accessing a property, the get body is executed. When passing a value to a property, the set body is executed. Within the ShipTypes's get body, that ships array is created and returned. You are not getting returning what you need.

I would define:

public string[] _shipTypes;
public string[] ShipTypes
{
    get
    {
        if (_shipTypes == null)
        {
            _shipTypes = new string[6];

            _shipTypes[0] = "Galaxy Class";
            _shipTypes[1] = "Galaxy Class";
            _shipTypes[2] = "Galaxy Class";
            _shipTypes[3] = "Galaxy Class";
            _shipTypes[4] = "Galaxy Class";
            _shipTypes[5] = "BattleCruiser";

            return _shipTypes;
        }
        else return _shipTypes;
    }
    set => _shipTypes = value;
}