如何在UIPickerViewModel中修复重写方法GetTitle

public class MyPickerViewModel : UIPickerViewModel
{
    private string[] component1Data = { "Option 1", "Option 2", "Option 3" };
    private string[] component2Data = { "Choice A", "Choice B", "Choice C" };

    public override nint GetComponentCount(UIPickerView pickerView)
    {
        return 2; // 返回组件的数量
    }

    public override nint GetRowsInComponent(UIPickerView pickerView, nint component)
    {
        if (component == 0)
        {
            return component1Data.Length; // 返回第一个组件的行数
        }
        else if (component == 1)
        {
            return component2Data.Length; // 返回第二个组件的行数
        }
        else
        {
            return 0;
        }
    }

    public override string GetTitle(UIPickerView pickerView, nint row, nint component)
    {
        if (component == 0)
        {
            return component1Data[row]; // 返回第一个组件的标题
        }
        else if (component == 1)
        {
            return component2Data[row]; // 返回第二个组件的标题
        }
        else
        {
            return string.Empty;
        }
    }
}