C# 合并图片

如下是自己曾经编写过的代码,放到这个地方,免的以后自己在去查看怎么编写这样的代码.....
:图片上写字，并设置背景色
 　　　　#region 创建树节点的图标
        /// <summary>
        /// 创建树节点的图标
        /// </summary>
        /// <param name="txt"></param>
        /// <param name="txtColor"></param>
        /// <returns></returns>
        private Bitmap CreateNodeImg(string txt, Color txtColor)
        {
            if (txtColor == Color.Transparent)
                txtColor = Color.Black;
            Bitmap newBitMap = new Bitmap(12, 14);
            Graphics g = Graphics.FromImage(newBitMap);
            if (txtColor != Color.Black)
            {
                g.Clear(txtColor);//背景色
            }
            g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
            FontFamily fm = new FontFamily("Arial");
            Font font = new Font(fm, 12, FontStyle.Regular, GraphicsUnit.Pixel);
            SolidBrush sb = new SolidBrush(Color.Black);
            g.DrawString(txt, font, sb, new PointF(0, 0));
            g.Dispose();
            return newBitMap;
        }
 合并图片
　　#region 合并图片
        /// <summary>
        /// 合并图片
        /// </summary>
        /// <param name="maps"></param>
        /// <returns></returns>
        private Bitmap MergerImg(params Bitmap[] maps)
        {
            int i = maps.Length;
            if (i == 0)
                throw new Exception("图片数不能够为0");
            //创建要显示的图片对象,根据参数的个数设置宽度
            Bitmap backgroudImg = new Bitmap(i * 12, 16);
            Graphics g = Graphics.FromImage(backgroudImg);
            //清除画布,背景设置为白色
            g.Clear(System.Drawing.Color.White);
            for (int j = 0; j < i; j++)
            {
                g.DrawImage(maps[j], j * 11, 0, maps[j].Width, maps[j].Height);
            }
            g.Dispose();
            return backgroudImg;
        }
        #endregion
        #region 合并图片
        /// <summary>
        /// 合并图片
        /// </summary>
        /// <param name="bitMapDic"></param>
        /// <returns></returns>
        private Bitmap MergerImg(Dictionary<string, Bitmap> bitMapDic)
        {
            if (bitMapDic == null || bitMapDic.Count == 0)
                throw new Exception("图片数不能够为0");
            //创建要显示的图片对象,根据参数的个数设置宽度
            Bitmap backgroudImg = new Bitmap(bitMapDic.Count * 12, 16);
            Graphics g = Graphics.FromImage(backgroudImg);
            //清除画布,背景设置为白色
            g.Clear(System.Drawing.Color.White);
            int j = 0;
            foreach (KeyValuePair<string, Bitmap> entry in bitMapDic)
            {
                Bitmap map = entry.Value;
                g.DrawImage(map, j * 11, 0, map.Width, map.Height);
                j++;
            }
            g.Dispose();
            return backgroudImg;
        }
 
            //合并图片还可以：
            //int i = maps.Length;
            //if (i == 0)
            //    throw new Exception("图片数不能够为0");
            ////创建要显示的图片对象,根据参数的个数设置宽度
            //Bitmap backgroudImg = new Bitmap(i * 16, 16);
            //Graphics g = Graphics.FromImage(backgroudImg);
            ////清除画布,背景设置为白色
            //g.Clear(System.Drawing.Color.White);
            //g.DrawImageUnscaled(maps[0], 0, 0);
            //g.DrawImageUnscaled(maps[1], maps[0].Width, 0);
            //g.Dispose();
            //return backgroudImg;