c# 多张图片合成一张图片

using System;

using System.Collections.Generic;

using System.Drawing;

using System.IO;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Web;

namespace ConsoleApp5

{

    class Program

    {

        static void Main(string[] args)

        {

            CombinImage();

        }

      /// <summary>

      /// 方法一

      /// 多张图片的合并

      /// </summary>

        static private void CombinImage()

        {

            const string folder = @"F:\测试图片";

            Image img1 = Image.FromFile(Path.Combine(folder, "测试1.png"));

            Bitmap map1 = new Bitmap(img1);

            Image img2 = Image.FromFile(Path.Combine(folder, "测试2.png"));

            Bitmap map2 = new Bitmap(img2);

            Image img3 = Image.FromFile(Path.Combine(folder, "测试3.png"));

            Bitmap map3 = new Bitmap(img3);

            var width = Math.Max(img1.Width, img2.Width);

            var height = img1.Height + img2.Height + ;

            // 初始化画布(最终的拼图画布)并设置宽高

            Bitmap bitMap = new Bitmap(width, height);

            // 初始化画板

            Graphics g1 = Graphics.FromImage(bitMap);

            // 将画布涂为白色(底部颜色可自行设置)

            g1.FillRectangle(Brushes.White, new Rectangle(, , width, height));

            //在x=0，y=0处画上图一

            g1.DrawImage(map1, , , img1.Width, img1.Height);

            //在x=0，y在图一往下10像素处画上图二

            g1.DrawImage(map2, , img1.Height + , img2.Width, img2.Height);

            g1.DrawImage(map3, , img1.Height + , img3.Width, img3.Height);

            map1.Dispose();

            map2.Dispose();

            map3.Dispose();

            Image img = bitMap;

            //保存

            img.Save(Path.Combine(folder, "new测试1.png"));

            img.Dispose();

        }

        /// <summary>

        /// 方法二

        ///实现左右拼接图片

        /// </summary>

        /// <param name="Img1"></param>

        /// <param name="Img2"></param>

        static private void CombinImage2(Image Img1, Image Img2)

        {

#if FALSE

            //控制台调用

             const string folder = @"F:\测试图片";

            Image img1 = Image.FromFile(Path.Combine(folder, "测试1.png"));

            Image img2 = Image.FromFile(Path.Combine(folder, "测试2.png"));

            JoinImage(img1, img2);

#endif

            int imgHeight = , imgWidth = ;

            imgWidth = Img1.Width + Img2.Width;

            imgHeight = Math.Max(Img1.Height, Img2.Height);

            Bitmap joinedBitmap = new Bitmap(imgWidth, imgHeight);

            Graphics graph = Graphics.FromImage(joinedBitmap);

            graph.DrawImage(Img1, , , Img1.Width, Img1.Height);

            graph.DrawImage(Img2, Img1.Width, , Img2.Width, Img2.Height);

            Image img = joinedBitmap;

            //保存

            const string folder = @"F:\测试图片";

            img.Save(Path.Combine(folder, "new测试2.png"));

            img.Dispose();

        }

        /// <summary>

        /// 方法三

        /// 调用此函数后使此两种图片合并，类似相册，有个

        /// 背景图，中间贴自己的目标图片

        /// </summary>

        /// <param name="sourceImg">粘贴的源图片</param>

        /// <param name="destImg">粘贴的目标图片</param>

        static private void CombinImage3()

        {

            const string folder = @"F:\测试图片";

            Image img1 = Image.FromFile(Path.Combine(folder, "测试1.png"));//相框图片

            Image img2 = Image.FromFile(Path.Combine(folder, "测试2.png")); //照片图片

            //从指定的System.Drawing.Image创建新的System.Drawing.Graphics

            Graphics g = Graphics.FromImage(img1);

            g.DrawImage(img1, , , , );// g.DrawImage(imgBack, 0, 0, 相框宽, 相框高);

             //g.FillRectangle(System.Drawing.Brushes.Black, 16, 16, (int)112 + 2, ((int)73 + 2));//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(img2, , , , );

            GC.Collect();

            img1.Save(Path.Combine(folder, "new测试3.png"));

            img1.Dispose();

        }

    }

}