C# 合併圖片

轉自：http://www.cnblogs.com/szytwo/archive/2012/12/15/2818944.html

如下是自己曾經編寫過的程式碼,放到這個地方,免的以後自己在去檢視怎麼編寫這樣的程式碼.....
:圖片上寫字，並設定背景色
 　　　　#region 建立樹節點的圖示
        /// <summary>
        /// 建立樹節點的圖示
        /// </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;
        }
 合併圖片
　　#region 合併圖片
        /// <summary>
        /// 合併圖片
        /// </summary>
        /// <param name="maps"></param>
        /// <returns></returns>
        private Bitmap MergerImg(params Bitmap[] maps)
        {
            int i = maps.Length;
            if (i == 0)
                throw new Exception("圖片數不能夠為0");
            //建立要顯示的圖片物件,根據引數的個數設定寬度
            Bitmap backgroudImg = new Bitmap(i * 12, 16);
            Graphics g = Graphics.FromImage(backgroudImg);
            //清除畫布,背景設定為白色
            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 合併圖片
        /// <summary>
        /// 合併圖片
        /// </summary>
        /// <param name="bitMapDic"></param>
        /// <returns></returns>
        private Bitmap MergerImg(Dictionary<string, Bitmap> bitMapDic)
        {
            if (bitMapDic == null || bitMapDic.Count == 0)
                throw new Exception("圖片數不能夠為0");
            //建立要顯示的圖片物件,根據引數的個數設定寬度
            Bitmap backgroudImg = new Bitmap(bitMapDic.Count * 12, 16);
            Graphics g = Graphics.FromImage(backgroudImg);
            //清除畫布,背景設定為白色
            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;
        }
 
            //合併圖片還可以：
            //int i = maps.Length;
            //if (i == 0)
            //    throw new Exception("圖片數不能夠為0");
            ////建立要顯示的圖片物件,根據引數的個數設定寬度
            //Bitmap backgroudImg = new Bitmap(i * 16, 16);
            //Graphics g = Graphics.FromImage(backgroudImg);
            ////清除畫布,背景設定為白色
            //g.Clear(System.Drawing.Color.White);
            //g.DrawImageUnscaled(maps[0], 0, 0);
            //g.DrawImageUnscaled(maps[1], maps[0].Width, 0);
            //g.Dispose();
            //return backgroudImg;