C# 生成文字图片 合并图片等

生成文字图片:.

/// <summary>        /// 生成文字图片        /// </summary>        /// <param name="text"></param>        /// <param name="isBold"></param>        /// <param name="fontSize"></param>        public Image CreateImage(string text, bool isBold, int fontSize)        {            int wid = 400;            int high = 200;            Font font;            if (isBold)            {                font = new Font("Arial", fontSize, FontStyle.Bold);
            }            else            {                font = new Font("Arial", fontSize, FontStyle.Regular);
            }            //绘笔颜色            SolidBrush brush = new SolidBrush(Color.Black);            StringFormat format = new StringFormat(StringFormatFlags.NoClip);            Bitmap image = new Bitmap(wid, high);            Graphics g = Graphics.FromImage(image);            SizeF sizef = g.MeasureString(text, font, PointF.Empty, format);//得到文本的宽高            int width = (int)(sizef.Width + 1);            int height = (int)(sizef.Height + 1);            image.Dispose();            image = new Bitmap(width, height);            g = Graphics.FromImage(image);            g.Clear(Color.White);//透明
            RectangleF rect = new RectangleF(0, 0, width, height);            //绘制图片            g.DrawString(text, font, brush, rect);            //释放对象            g.Dispose();            return image;        }

合并图片:

/// <summary>        /// 合并图片        /// </summary>        /// <param name="imgBack"></param>        /// <param name="img"></param>        /// <returns></returns>        public static Bitmap CombinImage(Image imgBack, Image img, int xDeviation = 0, int yDeviation = 0)        {
            Bitmap bmp = new Bitmap(imgBack.Width, imgBack.Height + img.Height);
            Graphics g = Graphics.FromImage(bmp);            g.Clear(Color.White);            g.DrawImage(imgBack, 0, 0, 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 / 2 - img.Width / 2 + xDeviation, imgBack.Height + yDeviation, img.Width, img.Height);            GC.Collect();            return bmp;        }
/// <summary>        /// Resize图片        /// </summary>        /// <param name="bmp">原始Bitmap</param>        /// <param name="newW">新的宽度</param>        /// <param name="newH">新的高度</param>        /// <param name="mode">保留着,暂时未用</param>        /// <returns>处理以后的图片</returns>        public static Image ResizeImage(Image bmp, int newW, int newH, int mode)        {            try            {                Image b = new Bitmap(newW, newH);                Graphics g = Graphics.FromImage(b);
                // 插值算法的质量                g.InterpolationMode = InterpolationMode.HighQualityBicubic;                g.DrawImage(bmp, new Rectangle(0, 0, newW, newH), new Rectangle(0, 0, bmp.Width, bmp.Height),                            GraphicsUnit.Pixel);                g.Dispose();                return b;            }            catch            {                return null;            }        }

MemoryStream保存到图片

    Bitmap bmp = CombinImage(ms, img1);       MemoryStream ms = new MemoryStream();       bmp.Save(ms, ImageFormat.Png);