如何在我的表单中使用我的类方法ToString（），以便将它添加到我的列表框C＃中？

Question

这是我到目前为止所拥有的。两班宾客和礼物。当用户将其输入到textBox时，Guest返回一个简单的名称。礼品是客人可以选择购买的商品清单。当用户提交他们的选择并输入他们的名字时，它将从第一个列表框中删除该项目，然后将所选项目+用户名称添加到第二个listBox。我似乎无法弄清楚为什么我的ToString（）方法无法正常工作才能做到这一点。有什么建议吗？

我再次尝试将输入传递给我的类方法，然后获取该输出并将其放入第二个listBox。我可以轻松地使用输入的文本和选择的项目并将其移动，但这不会合并我的类。

这是我的表格：

    public partial class Form1 : Form
    {
        //Guest newGuest = new Guest();
        Guests newGuest = new Guests();


        public Form1()
        {
            InitializeComponent();


        }
        List<Gift> newGift = new List<Gift>
        {
            new Gift("Horse"),
            new Gift("Pony"),
            new Gift("Plane"),
            new Gift("Kite"),
            new Gift("Lamp"),
            new Gift("Dog"),
            new Gift("Cat")
        };

        private void TextboxClear()
        {
            firstTxt.Clear();

        }
        //Method that adds choice from first listbox to second and removes it from the first
        private void MoveListBoxItems(ListBox wishLst, ListBox takenLst)
        {
            ListBox.SelectedObjectCollection sourceItems = wishLst.SelectedItems;
            foreach (var newGift in sourceItems)
            {
                takenLst.Items.Add(string.Format("{0}, {1}", newGift.ToString(), newGuest.ToString()));
                TextboxClear();
            }
            while (wishLst.SelectedItems.Count > 0)
            {
                wishLst.Items.Remove(wishLst.SelectedItems[0]);
            }
        }
        private void submitBtn_Click(object sender, EventArgs e)
        {
            if (String.IsNullOrEmpty(firstTxt.Text))
            {
                MessageBox.Show("Please enter first and last name.", "Warning");
                this.DialogResult = DialogResult.None;
            }
            else
            {
                if (wishLst.SelectedIndex >= 0)
                {
                    MoveListBoxItems(wishLst, takenLst);
                }
                else
                {
                    return;
                }
            }
        }

        private void fillBtn_Click(object sender, EventArgs e)
        {
            wishLst.Items.Clear();
            foreach (var item in newGift)
            {
                wishLst.Items.Add(item.ListGift);
            }

        }
    }
}

嘉宾班：

class Guests
    {
        #region [ Fields ]
        private string _name;
        #endregion

        #region [ Properties ]
        public string Name
        {
            get { return _name; }
            set
            {
                if (value == null)
                    throw new ArgumentNullException("Name",
                        "Name must not be null");
                _name = CultureInfo.CurrentCulture.TextInfo.ToTitleCase(value.Trim());
            }
        }
        #endregion

        #region [ Constructors ]
        public Guests()
        {
            this.Name = string.Empty;

        }

        public Guests(string name)
        {
            this.Name = name;

        }

        #endregion

        #region [ Methods ]

        public override string ToString()
        {
            return String.Format("{0}",
                this.Name.ToString());
        } 
        #endregion

    }
}

礼品类：

class Gift
    {

        private string _listGift;
        public string ListGift
        {
            get { return _listGift; }
            set { _listGift = value; }
        }
        public Gift()
        {
            this.ListGift = string.Empty;
        }

        public Gift(string listGift)
        {
            this.ListGift = listGift;
        }

        public override string ToString()
        {
            return string.Format("{0} Purchased by", this.ListGift);
        }

    }
}