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【Asp.Net】放大缩小图片尺寸

作者:勤勤 / 发布于2015/1/13/ 894


	/// <summary>
	 /// 放大缩小图片尺寸
	 /// </summary>
	 /// <param name="picPath"></param>
	 /// <param name="reSizePicPath"></param>
	 /// <param name="iSize"></param>
	 /// <param name="format"></param>
	 public void PicSized(string picPath, string reSizePicPath, int iSize, ImageFormat format)
	 {
	 Bitmap originBmp = new Bitmap(picPath);
	 int w = originBmp.Width * iSize;
	 int h = originBmp.Height * iSize;
	 Bitmap resizedBmp = new Bitmap(w, h);
	 Graphics g = Graphics.FromImage(resizedBmp);
	 //设置高质量插值法
	 g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
	 //设置高质量,低速度呈现平滑程度
	 g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
	 g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
	 //消除锯齿
	 g.SmoothingMode = SmoothingMode.AntiAlias;
	 g.DrawImage(originBmp, new Rectangle(0, 0, w, h), new Rectangle(0, 0, originBmp.Width, originBmp.Height), GraphicsUnit.Pixel);
	 resizedBmp.Save(reSizePicPath, format);
	 g.Dispose();
	 resizedBmp.Dispose();
	 originBmp.Dispose();
	 }

试试其它关键字

　放大缩小　　图片尺寸　

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