C# 如何拖动&；将PictureBox从一个Windows窗体拖放到另一个窗体

我正在使用windows窗体构建一个简单的拖放游戏。这就像一个拼图游戏。我想把图片从一个表格拖到另一个表格来完成这个拼图。有没有一种方法可以用PictureBox做到这一点。它似乎是唯一没有AllowDrop函数的属性。下面是源代码

我想将图像从左边的窗体拖到右边的窗体

我一直在学习这个教程，但我无法理解它。

右表

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace DragDropGame
{
    public partial class ChildFormTwo : Form
    {
        public ChildFormTwo()
        {
            InitializeComponent();

            pictureBox3.DragEnter += pictureBox3_DragEnter;
            pictureBox3.DragDrop += pictureBox3_DragDrop;
        }

        private void pictureBox3_DragDrop(object sender, DragEventArgs e)
        {
            var bmp = (Bitmap)e.Data.GetData(DataFormats.Bitmap);
            pictureBox2.Image = bmp;
        }

        private void pictureBox3_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.Bitmap))
                e.Effect = DragDropEffects.Move;
        }
    }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace DragDropGame
{
    public partial class ChildFormTwo : Form
    {
        public ChildFormTwo()
        {
            InitializeComponent();

            pictureBox3.DragEnter += pictureBox3_DragEnter;
            pictureBox3.DragDrop += pictureBox3_DragDrop;
        }

        private void pictureBox3_DragDrop(object sender, DragEventArgs e)
        {
            var bmp = (Bitmap)e.Data.GetData(DataFormats.Bitmap);
            pictureBox2.Image = bmp;
        }

        private void pictureBox3_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.Bitmap))
                e.Effect = DragDropEffects.Move;
        }
    }
}

从左侧开始

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace DragDropGame
{
    public partial class ChildFormTwo : Form
    {
        public ChildFormTwo()
        {
            InitializeComponent();

            pictureBox3.DragEnter += pictureBox3_DragEnter;
            pictureBox3.DragDrop += pictureBox3_DragDrop;
        }

        private void pictureBox3_DragDrop(object sender, DragEventArgs e)
        {
            var bmp = (Bitmap)e.Data.GetData(DataFormats.Bitmap);
            pictureBox2.Image = bmp;
        }

        private void pictureBox3_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.Bitmap))
                e.Effect = DragDropEffects.Move;
        }
    }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace DragDropGame
{
    public partial class ChildFormTwo : Form
    {
        public ChildFormTwo()
        {
            InitializeComponent();

            pictureBox3.DragEnter += pictureBox3_DragEnter;
            pictureBox3.DragDrop += pictureBox3_DragDrop;
        }

        private void pictureBox3_DragDrop(object sender, DragEventArgs e)
        {
            var bmp = (Bitmap)e.Data.GetData(DataFormats.Bitmap);
            pictureBox2.Image = bmp;
        }

        private void pictureBox3_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.Bitmap))
                e.Effect = DragDropEffects.Move;
        }
    }
}

---

代码完全缺少DoDragDrop（）方法调用。不要忽略其返回值。另请参见