.net - 将图像裁切大小调整为左右两个像素

我发现，使用System.Drawing.Graphics类调整图像大小时，导致图像从右边界和底边界丢失了一个像素。这是我的代码中的某个错误还是.Net问题？
测试代码：

public static void Resize(string imagePath,int width) {
  InterpolationMode[] interpolationModes = new InterpolationMode[]{InterpolationMode.Bicubic, InterpolationMode.Bilinear, InterpolationMode.Default, InterpolationMode.High,
    InterpolationMode.HighQualityBicubic, InterpolationMode.HighQualityBilinear, InterpolationMode.Low, InterpolationMode.NearestNeighbor};
  SmoothingMode[] smoothingModes = new SmoothingMode[]{SmoothingMode.AntiAlias, SmoothingMode.Default, SmoothingMode.HighQuality, SmoothingMode.HighSpeed,
    SmoothingMode.None};

  for(int i = 0; i < interpolationModes.Length; i++) {
    for(int j = 0; j < smoothingModes.Length; j++) {
      Resize(imagePath, width, interpolationModes[i], smoothingModes[j]);
    }
  }
}


public static void Resize(string imagePath,int width, InterpolationMode interpolationMode, SmoothingMode smoothingMode) {
  Image imgPhoto = Image.FromFile(imagePath);
  float percent = (float)width / (float)imgPhoto.Width;
  int height = (int)(imgPhoto.Height * percent);

  Bitmap bmPhoto = new Bitmap(width, height, PixelFormat.Format24bppRgb);
  bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution);

  Graphics grPhoto = Graphics.FromImage(bmPhoto);
  grPhoto.InterpolationMode = interpolationMode;
  grPhoto.SmoothingMode = smoothingMode;

  grPhoto.DrawImage(imgPhoto,
  new Rectangle(0, 0, width, height),
  new Rectangle(0, 0, imgPhoto.Width, imgPhoto.Height ),
  GraphicsUnit.Pixel);

  grPhoto.Dispose();

  string fileName = Path.GetFileName(imagePath);
  string path = Path.GetDirectoryName(imagePath)+"\\resized";

  if (!Directory.Exists(path))
    Directory.CreateDirectory(path);

  bmPhoto.Save(String.Format("{0}\\{1}_{2}_{3}", path, interpolationMode.ToString(), smoothingMode.ToString(),fileName));
}

源图像：
Source image http://img110.imageshack.us/img110/4876/sampleaa2.jpg
结果：
Result http://img110.imageshack.us/img110/2050/resizedsamplesy4.png
附言我尝试了InterpolationMode和SmoothingMode的所有现有组合。他们都没有给出可接受的结果。

最佳答案

这是.NET图形中的错误，并且是一个非常烦人的错误。这不是舍入错误或算法问题。如果创建100x100位图，然后使用100x100矩形作为参数之一调用DrawRectangle，则可以看到相同问题的变体：您将看不到绘制矩形的底部或右侧。