/// 图片裁剪,生成新图,保存在同一目录下,名字加_new,格式1.png 新图1_new.png /// </summary> /// <param name="picPath">要修改图片完整路径</param> /// <param name="x">修改起点x坐标</param> /// <param name="y">修改起点y坐标</param> /// <param name="width">新图宽度</param> /// <param name="height">新图高度</param> public static void cutPicture(String picPath, int x, int y, int width, int height) { //图片路径 String oldPath = picPath; //新图片路径 String newPath = System.IO.Path.GetExtension(oldPath); //计算新的文件名,在旧文件名后加_new newPath = oldPath.Substring(0, oldPath.Length - newPath.Length) + "_new" + newPath; //定义截取矩形 System.Drawing.Rectangle cropArea = new System.Drawing.Rectangle(x, y, width, height); //要截取的区域大小 //加载图片 System.Drawing.Image img = System.Drawing.Image.FromStream(new System.IO.MemoryStream(System.IO.File.ReadAllBytes(oldPath))); //判断超出的位置否 if ((img.Width < x + width) || img.Height < y + height) { MessageBox.Show("裁剪尺寸超出原有尺寸!"); img.Dispose(); return; } //定义Bitmap对象 System.Drawing.Bitmap bmpImage = new System.Drawing.Bitmap(img); //进行裁剪 System.Drawing.Bitmap bmpCrop = bmpImage.Clone(cropArea, bmpImage.PixelFormat); //保存成新文件 bmpCrop.Save(newPath); //释放对象 img.Dispose(); bmpCrop.Dispose(); }
作者:38度6
原文网址:https://www.cnblogs.com/qiantao/p/9834650.html