请问现在有两个picturebox1和picturebox2中各有一张图片，请问怎么通过点击一个button 按钮 实现将两张图片上下拼接在picturebox3中

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

namespace Q1063079
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Bitmap bmp = new Bitmap(pictureBox1.Image.Width + pictureBox1.Image.Width, pictureBox1.Image.Height > pictureBox2.Image.Height ? pictureBox1.Image.Height : pictureBox2.Image.Height);
            Graphics g = Graphics.FromImage(bmp);
            g.DrawImage(pictureBox1.Image, 0, 0);
            g.DrawImage(pictureBox2.Image, pictureBox1.Image.Width, 0);
            pictureBox3.Image = bmp;
        }
    }
}

问题解决的话，请点采纳

完整代码下载
https://download.csdn.net/download/caozhy/12322597