/// <summary> /// 返回图片 /// </summary> /// <param name="img"></param> /// <returns></returns> protected FileContentResult RelsultBitmap(Bitmap img) { using (Bitmap bt = img) { using (System.IO.MemoryStream ms = new System.IO.MemoryStream()) { bt.Save(ms, System.Drawing.Imaging.ImageFormat.Gif); return File(ms.ToArray(), "FrameImages/Gif"); } } } /// <summary> /// 提示图片返回 /// </summary> /// <param name="keyWord">提示文字</param> protected FileContentResult TipsImage(string keyWord) { int fontSize = 15; StringFormat sf = new StringFormat(); sf.LineAlignment = StringAlignment.Center; sf.Alignment = StringAlignment.Center; using (Bitmap img = new Bitmap(288, 288)) { float y = img.Height / (keyWord.Length + 1); using (Graphics g = Graphics.FromImage(img)) { g.Clear(Color.White);//绘画背景颜色 for (int i = 0; i < keyWord.Length; i++) { // 绘画文字 g.DrawString(keyWord[i].ToString(), new Font("Arial", fontSize, FontStyle.Regular), Brushes.Red, (img.Width / 2) - (fontSize / 2), y * (i + 1), sf); } return RelsultBitmap(img); } } }
效果图: