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.....1: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;        } 2 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;