C# 在usecontrol中显示表单中的picturebox

我需要在usercontrol中显示主窗体中形成的picturebox，但也需要保存对此picturebox的订阅。 在这个类中，我填写字段，然后使用foreach将picturebox传递给usercontrol

public class UserCtr
{
    public event Action<List<Users>> ClickPicture;
    public event Action<List<Users>, Group> DoubleClickPicture;
    public Group group { get; set; }
    public PictureBox picture { get; set; }
    public List<Users> users { get; set; }

    public UserCtr(Group group, PictureBox picture, List<Users> users)
    {
        this.group = group;
        this.picture = picture;
        this.users = users;
        this.picture.Click += PictureClick;
        this.picture.MouseDoubleClick += PictureDoubleClick;
    }
    private void PictureClick(object s, EventArgs e)
    {
        ClickPicture(users);
    }
    private void PictureDoubleClick(object s, EventArgs e)
    {
        DoubleClickPicture(users, group);
    }

}

   public partial class UserControl1 : UserControl
{
    public UserControl1(PictureBox pic)
    {

        InitializeComponent();
        Load += (s, e) => pictureBox1 = pic;
        Invalidate();
    }
    protected override void OnTextChanged(EventArgs e)
    {
        base.OnTextChanged(e);
        label1.Text = Text;
    }

}

我的用户控制

public class UserCtr
{
    public event Action<List<Users>> ClickPicture;
    public event Action<List<Users>, Group> DoubleClickPicture;
    public Group group { get; set; }
    public PictureBox picture { get; set; }
    public List<Users> users { get; set; }

    public UserCtr(Group group, PictureBox picture, List<Users> users)
    {
        this.group = group;
        this.picture = picture;
        this.users = users;
        this.picture.Click += PictureClick;
        this.picture.MouseDoubleClick += PictureDoubleClick;
    }
    private void PictureClick(object s, EventArgs e)
    {
        ClickPicture(users);
    }
    private void PictureDoubleClick(object s, EventArgs e)
    {
        DoubleClickPicture(users, group);
    }

}

   public partial class UserControl1 : UserControl
{
    public UserControl1(PictureBox pic)
    {

        InitializeComponent();
        Load += (s, e) => pictureBox1 = pic;
        Invalidate();
    }
    protected override void OnTextChanged(EventArgs e)
    {
        base.OnTextChanged(e);
        label1.Text = Text;
    }

}

}

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标签已填写，而picturebox为空

设置图像的代码在哪里？-要订阅PBs事件，请使用与加载事件相同的lambda语法，从另一个类填充picturebox。它实现了一个返回picturebox的方法。然后，使用foreach，我将图像上传到picturebox？那代码不管用吗？我的图片盒还是空的。