using System;

using System.Collections.Generic;

using System.Drawing;

using System.Linq;

using System.Text;

namespace DotNet合并图片.Utils

{

   public static class ImageUtil

    {

        /// <summary>

        /// 合并图片，默认是垂直合并，图1在上，图2在下。

        /// </summary>

        /// <param name="imgBack"></param>

        /// <param name="img"></param>

        /// <returns></returns>

        public static Bitmap CombinImage(Image imgBack, Image img, int xDeviation = , int yDeviation = )

        {

            Bitmap bmp = new Bitmap(imgBack.Width, imgBack.Height + img.Height);

            Graphics g = Graphics.FromImage(bmp);

            g.Clear(Color.White);

            g.DrawImage(imgBack, , , imgBack.Width, imgBack.Height); //g.DrawImage(imgBack, 0, 0, 相框宽, 相框高);     

            //g.FillRectangle(System.Drawing.Brushes.White, imgBack.Width / 2 - img.Width / 2 - 1, imgBack.Width / 2 - img.Width / 2 - 1,1,1);//相片四周刷一层黑色边框    

            //g.DrawImage(img, 照片与相框的左边距, 照片与相框的上边距, 照片宽, 照片高);    

            g.DrawImage(img, imgBack.Width /  - img.Width /  + xDeviation, imgBack.Height + yDeviation, img.Width, img.Height);

            GC.Collect();

            return bmp;

        }

    }

}

try

            {

                string iamge1FullName = Path.Combine(Application.StartupPath, "1.png");

                string iamge2FullName = Path.Combine(Application.StartupPath, "2.png");

                Image img1 = Image.FromFile(iamge1FullName);

                Image img2 = Image.FromFile(iamge2FullName);

                string iamgeAllFullName = Path.Combine(Application.StartupPath, "all.png");

                Bitmap bmAll = DotNet合并图片.Utils.ImageUtil.CombinImage(img1, img2);

                bmAll.Save(iamgeAllFullName, ImageFormat.Png);

                MessageBox.Show("完成！");

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message);

            }