using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Drawing.Text;using System.Drawing.Drawing2D;using System.Drawing.Imaging;using System.Windows.Forms;namespace MengYu.Image{ public class ImageClass { /// /// 将图片转换成黑白色效果 /// /// Bitmap 对象 /// PictureBox 对象 public static void HeiBaiSeImage(Bitmap bmp, PictureBox picBox) { //以黑白效果显示图像 Bitmap oldBitmap; Bitmap newBitmap = null; try { int Height = bmp.Height; int Width = bmp.Width; newBitmap = new Bitmap(Width, Height); oldBitmap = bmp; Color pixel; for (int x = 0; x < Width; x++) for (int y = 0; y < Height; y++) { pixel = oldBitmap.GetPixel(x, y); int r, g, b, Result = 0; r = pixel.R; g = pixel.G; b = pixel.B; //实例程序以加权平均值法产生黑白图像 int iType = 2; switch (iType) { case 0://平均值法 Result = ((r + g + b) / 3); break; case 1://最大值法 Result = r > g ? r : g; Result = Result > b ? Result : b; break; case 2://加权平均值法 Result = ((int)(0.7 * r) + (int)(0.2 * g) + (int)(0.1 * b)); break; } newBitmap.SetPixel(x, y, Color.FromArgb(Result, Result, Result)); } } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示"); } picBox.Image = newBitmap; } /// /// 雾化效果 /// /// /// public static void WuHuaImage(Bitmap bmp, PictureBox picBox) { //雾化效果 Bitmap oldBitmap; Bitmap newBitmap = null; try { int Height = bmp.Height; int Width = bmp.Width; newBitmap = new Bitmap(Width, Height); oldBitmap = bmp; Color pixel; for (int x = 1; x < Width - 1; x++) for (int y = 1; y < Height - 1; y++) { System.Random MyRandom = new Random(); int k = MyRandom.Next(123456); //像素块大小 int dx = x + k % 19; int dy = y + k % 19; if (dx >= Width) dx = Width - 1; if (dy >= Height) dy = Height - 1; pixel = oldBitmap.GetPixel(dx, dy); newBitmap.SetPixel(x, y, pixel); } } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示"); } picBox.Image = newBitmap; } /// /// 锐化效果 /// /// /// public static void RuiHuaImage(Bitmap bmp, PictureBox picBox) { Bitmap oldBitmap; Bitmap newBitmap = null; try { int Height = bmp.Height; int Width = bmp.Width; newBitmap = new Bitmap(Width, Height); oldBitmap = bmp; Color pixel; //拉普拉斯模板 int[] Laplacian = { -1, -1, -1, -1, 9, -1, -1, -1, -1 }; for (int x = 1; x < Width - 1; x++) for (int y = 1; y < Height - 1; y++) { int r = 0, g = 0, b = 0; int Index = 0; for (int col = -1; col <= 1; col++) for (int row = -1; row <= 1; row++) { pixel = oldBitmap.GetPixel(x + row, y + col); r += pixel.R * Laplacian[Index]; g += pixel.G * Laplacian[Index]; b += pixel.B * Laplacian[Index]; Index++; } //处理颜色值溢出 r = r > 255 ? 255 : r; r = r < 0 ? 0 : r; g = g > 255 ? 255 : g; g = g < 0 ? 0 : g; b = b > 255 ? 255 : b; b = b < 0 ? 0 : b; newBitmap.SetPixel(x - 1, y - 1, Color.FromArgb(r, g, b)); } } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示"); } picBox.Image = newBitmap; } /// ///底片效果 /// /// Bitmap 对象 /// PictureBox 对象 public static void DiPianImage(Bitmap bmp, PictureBox picBox) { Bitmap oldBitmap; Bitmap newBitmap = null; try { int Height = bmp.Height; int Width = bmp.Width; newBitmap = new Bitmap(Width, Height); oldBitmap = bmp; Color pixel; for (int x = 1; x < Width; x++) { for (int y = 1; y < Height; y++) { int r, g, b; pixel = oldBitmap.GetPixel(x, y); r = 255 - pixel.R; g = 255 - pixel.G; b = 255 - pixel.B; newBitmap.SetPixel(x, y, Color.FromArgb(r, g, b)); } } } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information); } picBox.Image = newBitmap; } /// ///浮雕效果 /// /// Bitmap 对象 /// PictureBox 对象 public static void FuDiaoImage(Bitmap bmp, PictureBox picBox) { Bitmap oldBitmap; Bitmap newBitmap = null; try { int Height = bmp.Height; int Width = bmp.Width; newBitmap = new Bitmap(Width, Height); oldBitmap = bmp; Color pixel1, pixel2; for (int x = 0; x < Width - 1; x++) { for (int y = 0; y < Height - 1; y++) { int r = 0, g = 0, b = 0; pixel1 = oldBitmap.GetPixel(x, y); pixel2 = oldBitmap.GetPixel(x + 1, y + 1); r = Math.Abs(pixel1.R - pixel2.R + 128); g = Math.Abs(pixel1.G - pixel2.G + 128); b = Math.Abs(pixel1.B - pixel2.B + 128); if (r > 255) r = 255; if (r < 0) r = 0; if (g > 255) g = 255; if (g < 0) g = 0; if (b > 255) b = 255; if (b < 0) b = 0; newBitmap.SetPixel(x, y, Color.FromArgb(r, g, b)); } } } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information); } picBox.Image = newBitmap; } /// /// 日光照射效果 /// /// Bitmap 对象 /// PictureBox 对象 public static void RiGuangZhaoSheImage(Bitmap bmp, PictureBox picBox) { //以光照效果显示图像 Graphics MyGraphics = picBox.CreateGraphics(); MyGraphics.Clear(Color.White); Bitmap MyBmp = new Bitmap(bmp, bmp.Width, bmp.Height); int MyWidth = MyBmp.Width; int MyHeight = MyBmp.Height; Bitmap MyImage = MyBmp.Clone(new RectangleF(0, 0, MyWidth, MyHeight), System.Drawing.Imaging.PixelFormat.DontCare); int A = MyWidth / 2; int B = MyHeight / 2; //MyCenter图片中心点，发亮此值会让强光中心发生偏移 Point MyCenter = new Point(MyWidth / 2, MyHeight / 2); //R强光照射面的半径，即”光晕” int R = Math.Min(MyWidth / 2, MyHeight / 2); for (int i = MyWidth - 1; i >= 1; i--) { for (int j = MyHeight - 1; j >= 1; j--) { float MyLength = (float)Math.Sqrt(Math.Pow((i - MyCenter.X), 2) + Math.Pow((j - MyCenter.Y), 2)); //如果像素位于”光晕”之内 if (MyLength < R) { Color MyColor = MyImage.GetPixel(i, j); int r, g, b; //220亮度增加常量，该值越大，光亮度越强 float MyPixel = 220.0f * (1.0f - MyLength / R); r = MyColor.R + (int)MyPixel; r = Math.Max(0, Math.Min(r, 255)); g = MyColor.G + (int)MyPixel; g = Math.Max(0, Math.Min(g, 255)); b = MyColor.B + (int)MyPixel; b = Math.Max(0, Math.Min(b, 255)); //将增亮后的像素值回写到位图 Color MyNewColor = Color.FromArgb(255, r, g, b); MyImage.SetPixel(i, j, MyNewColor); } } //重新绘制图片 MyGraphics.DrawImage(MyImage, new Rectangle(0, 0, MyWidth, MyHeight)); } } /// /// 油画效果 /// /// Bitmap 对象 /// PictureBox 对象 public static void YouHuaImage(Bitmap bmp, PictureBox picBox) { //以油画效果显示图像 Graphics g = picBox.CreateGraphics(); int width = bmp.Width; int height = bmp.Height; RectangleF rect = new RectangleF(0, 0, width, height); Bitmap MyBitmap = bmp; Bitmap img = MyBitmap.Clone(rect, System.Drawing.Imaging.PixelFormat.DontCare); //产生随机数序列 Random rnd = new Random(); //取不同的值决定油画效果的不同程度 int iModel = 2; int i = width - iModel; while (i > 1) { int j = height - iModel; while (j > 1) { int iPos = rnd.Next(100000) % iModel; //将该点的RGB值设置成附近iModel点之内的任一点 Color color = img.GetPixel(i + iPos, j + iPos); img.SetPixel(i, j, color); j = j - 1; } i = i - 1; } //重新绘制图像 g.Clear(Color.White); g.DrawImage(img, new Rectangle(0, 0, width, height)); } /// /// 垂直百叶窗 /// /// Bitmap 对象 /// PictureBox 对象 public static void BaiYeChuang1(Bitmap bmp, PictureBox picBox) { //垂直百叶窗显示图像 try { Bitmap MyBitmap = (Bitmap)bmp.Clone(); int dw = MyBitmap.Width / 30; int dh = MyBitmap.Height; Graphics g = picBox.CreateGraphics(); g.Clear(Color.Gray); Point[] MyPoint = new Point[30]; for (int x = 0; x < 30; x++) { MyPoint[x].Y = 0; MyPoint[x].X = x * dw; } Bitmap bitmap = new Bitmap(MyBitmap.Width, MyBitmap.Height); for (int i = 0; i < dw; i++) { for (int j = 0; j < 30; j++) { for (int k = 0; k < dh; k++) { bitmap.SetPixel(MyPoint[j].X + i, MyPoint[j].Y + k, MyBitmap.GetPixel(MyPoint[j].X + i, MyPoint[j].Y + k)); } } picBox.Refresh(); picBox.Image = bitmap; System.Threading.Thread.Sleep(120); } } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示"); } } /// /// 水平百叶窗 /// /// Bitmap 对象 /// PictureBox 对象 public static void BaiYeChuang2(Bitmap bmp, PictureBox picBox) { //水平百叶窗显示图像 try { Bitmap MyBitmap = (Bitmap)bmp.Clone(); int dh = MyBitmap.Height / 20; int dw = MyBitmap.Width; Graphics g = picBox.CreateGraphics(); g.Clear(Color.Gray); Point[] MyPoint = new Point[20]; for (int y = 0; y < 20; y++) { MyPoint[y].X = 0; MyPoint[y].Y = y * dh; } Bitmap bitmap = new Bitmap(MyBitmap.Width, MyBitmap.Height); for (int i = 0; i < dh; i++) { for (int j = 0; j < 20; j++) { for (int k = 0; k < dw; k++) { bitmap.SetPixel(MyPoint[j].X + k, MyPoint[j].Y + i, MyBitmap.GetPixel(MyPoint[j].X + k, MyPoint[j].Y + i)); } } picBox.Refresh(); picBox.Image = bitmap; System.Threading.Thread.Sleep(100); } } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示"); } } /// /// 左右拉伸效果 /// /// Bitmap 对象 /// PictureBox 对象 public static void LaShen_ZuoDaoYou(Bitmap bmp, PictureBox picBox) { //以从左向右拉伸方式显示图像 try { int width = bmp.Width; //图像宽度 int height = bmp.Height; //图像高度 Graphics g = picBox.CreateGraphics(); g.Clear(Color.Gray); //初始为全灰色 for (int x = 1; x <= width; x++) { Bitmap bitmap = bmp.Clone(new Rectangle(0, 0, x, height), System.Drawing.Imaging.PixelFormat.Format24bppRgb); g.DrawImage(bitmap, 0, 0); System.Threading.Thread.Sleep(10); } } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示"); } } /// /// 淡入效果 /// /// Bitmap 对象 /// PictureBox 对象 public static void DanRu(Bitmap bmp, PictureBox picBox) { //淡入显示图像 try { Graphics g = picBox.CreateGraphics(); g.Clear(Color.Gray); int width = bmp.Width; int height = bmp.Height; ImageAttributes attributes = new ImageAttributes(); ColorMatrix matrix = new ColorMatrix(); //创建淡入颜色矩阵 matrix.Matrix00 = (float)0.0; matrix.Matrix01 = (float)0.0; matrix.Matrix02 = (float)0.0; matrix.Matrix03 = (float)0.0; matrix.Matrix04 = (float)0.0; matrix.Matrix10 = (float)0.0; matrix.Matrix11 = (float)0.0; matrix.Matrix12 = (float)0.0; matrix.Matrix13 = (float)0.0; matrix.Matrix14 = (float)0.0; matrix.Matrix20 = (float)0.0; matrix.Matrix21 = (float)0.0; matrix.Matrix22 = (float)0.0; matrix.Matrix23 = (float)0.0; matrix.Matrix24 = (float)0.0; matrix.Matrix30 = (float)0.0; matrix.Matrix31 = (float)0.0; matrix.Matrix32 = (float)0.0; matrix.Matrix33 = (float)0.0; matrix.Matrix34 = (float)0.0; matrix.Matrix40 = (float)0.0; matrix.Matrix41 = (float)0.0; matrix.Matrix42 = (float)0.0; matrix.Matrix43 = (float)0.0; matrix.Matrix44 = (float)0.0; matrix.Matrix33 = (float)1.0; matrix.Matrix44 = (float)1.0; //从0到1进行修改色彩变换矩阵主对角线上的数值 //使三种基准色的饱和度渐增 Single count = (float)0.0; while (count < 1.0) { matrix.Matrix00 = count; matrix.Matrix11 = count; matrix.Matrix22 = count; matrix.Matrix33 = count; attributes.SetColorMatrix(matrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap); g.DrawImage(bmp, new Rectangle(0, 0, width, height), 0, 0, width, height, GraphicsUnit.Pixel, attributes); System.Threading.Thread.Sleep(200); count = (float)(count + 0.02); } } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示"); } } /// /// 逆时针旋转 /// /// Bitmap 对象 /// PictureBox 对象 public static void XuanZhuan90(Bitmap bmp, PictureBox picBox) { try { Graphics g = picBox.CreateGraphics(); bmp.RotateFlip(RotateFlipType.Rotate90FlipXY); g.Clear(Color.White); g.DrawImage(bmp, 0, 0); } catch (Exception e) { MessageBox.Show(e.ToString()); } } /// /// 顺时针旋转 /// /// Bitmap 对象 /// PictureBox 对象 public static void XuanZhuan270(Bitmap bmp, PictureBox picBox) { try { Graphics g = picBox.CreateGraphics(); bmp.RotateFlip(RotateFlipType.Rotate270FlipXY); g.Clear(Color.White); g.DrawImage(bmp, 0, 0); } catch (Exception e) { MessageBox.Show(e.ToString()); } } /// /// 分块显示 /// /// Bitmap 对象 /// PictureBox 对象 public static void FenKuai(Bitmap MyBitmap, PictureBox picBox) { //以分块效果显示图像 Graphics g = picBox.CreateGraphics(); g.Clear(Color.White); int width = MyBitmap.Width; int height = MyBitmap.Height; //定义将图片切分成四个部分的区域 RectangleF[] block ={ new RectangleF(0,0,width/2,height/2), new RectangleF(width/2,0,width/2,height/2), new RectangleF(0,height/2,width/2,height/2), new RectangleF(width/2,height/2,width/2,height/2)}; //分别克隆图片的四个部分 Bitmap[] MyBitmapBlack ={ MyBitmap.Clone(block[0],System.Drawing.Imaging.PixelFormat.DontCare), MyBitmap.Clone(block[1],System.Drawing.Imaging.PixelFormat.DontCare), MyBitmap.Clone(block[2],System.Drawing.Imaging.PixelFormat.DontCare), MyBitmap.Clone(block[3],System.Drawing.Imaging.PixelFormat.DontCare)}; //绘制图片的四个部分，各部分绘制时间间隔为0.5秒 g.DrawImage(MyBitmapBlack[0], 0, 0); System.Threading.Thread.Sleep(500); g.DrawImage(MyBitmapBlack[1], width / 2, 0); System.Threading.Thread.Sleep(500); g.DrawImage(MyBitmapBlack[3], width / 2, height / 2); System.Threading.Thread.Sleep(500); g.DrawImage(MyBitmapBlack[2], 0, height / 2); } /// /// 积木特效 /// /// Bitmap 对象 /// PictureBox 对象 public static void JiMu(Bitmap MyBitmap, PictureBox picBox) { //以积木效果显示图像 try { Graphics myGraphics = picBox.CreateGraphics(); int myWidth, myHeight, i, j, iAvg, iPixel; Color myColor, myNewColor; RectangleF myRect; myWidth = MyBitmap.Width; myHeight = MyBitmap.Height; myRect = new RectangleF(0, 0, myWidth, myHeight); Bitmap bitmap = MyBitmap.Clone(myRect, System.Drawing.Imaging.PixelFormat.DontCare); i = 0; while (i < myWidth - 1) { j = 0; while (j < myHeight - 1) { myColor = bitmap.GetPixel(i, j); iAvg = (myColor.R + myColor.G + myColor.B) / 3; iPixel = 0; if (iAvg >= 128) iPixel = 255; else iPixel = 0; myNewColor = Color.FromArgb(255, iPixel, iPixel, iPixel); bitmap.SetPixel(i, j, myNewColor); j = j + 1; } i = i + 1; } myGraphics.Clear(Color.WhiteSmoke); myGraphics.DrawImage(bitmap, new Rectangle(0, 0, myWidth, myHeight)); } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示"); } } /// /// 马赛克效果 /// /// Bitmap 对象 /// PictureBox 对象 public static void MaSaiKe(Bitmap MyBitmap, PictureBox picBox) { //以马赛克效果显示图像 try { int dw = MyBitmap.Width / 50; int dh = MyBitmap.Height / 50; Graphics g = picBox.CreateGraphics(); g.Clear(Color.Gray); Point[] MyPoint = new Point[2500]; for (int x = 0; x < 50; x++) for (int y = 0; y < 50; y++) { MyPoint[x * 50 + y].X = x * dw; MyPoint[x * 50 + y].Y = y * dh; } Bitmap bitmap = new Bitmap(MyBitmap.Width, MyBitmap.Height); for (int i = 0; i < 10000; i++) { System.Random MyRandom = new Random(); int iPos = MyRandom.Next(2500); for (int m = 0; m < dw; m++) for (int n = 0; n < dh; n++) { bitmap.SetPixel(MyPoint[iPos].X + m, MyPoint[iPos].Y + n, MyBitmap.GetPixel(MyPoint[iPos].X + m, MyPoint[iPos].Y + n)); } picBox.Refresh(); picBox.Image = bitmap; } for (int i = 0; i < 2500; i++) for (int m = 0; m < dw; m++) for (int n = 0; n < dh; n++) { bitmap.SetPixel(MyPoint[i].X + m, MyPoint[i].Y + n, MyBitmap.GetPixel(MyPoint[i].X + m, MyPoint[i].Y + n)); } picBox.Refresh(); picBox.Image = bitmap; } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示"); } } /// /// 自动旋转 /// /// Bitmap 对象 /// PictureBox 对象 public static void XuanZhuan(Bitmap MyBitmap, PictureBox picBox) { Graphics g = picBox.CreateGraphics(); float MyAngle = 0;//旋转的角度 while (MyAngle < 360) { TextureBrush MyBrush = new TextureBrush(MyBitmap); picBox.Refresh(); MyBrush.RotateTransform(MyAngle); g.FillRectangle(MyBrush, 0, 0, MyBitmap.Width, MyBitmap.Height); MyAngle += 0.5f; System.Threading.Thread.Sleep(50); } } /// /// 上下对接 /// /// Bitmap 对象 /// PictureBox 对象 public static void DuiJie_ShangXia(Bitmap MyBitmap, PictureBox picBox) { //以上下对接方式显示图像 try { int width = MyBitmap.Width; //图像宽度 int height = MyBitmap.Height; //图像高度 Graphics g = picBox.CreateGraphics(); g.Clear(Color.Gray); //初始为全灰色 Bitmap bitmap = new Bitmap(width, height); int x = 0; while (x <= height / 2) { for (int i = 0; i <= width - 1; i++) { bitmap.SetPixel(i, x, MyBitmap.GetPixel(i, x)); } for (int i = 0; i <= width - 1; i++) { bitmap.SetPixel(i, height - x - 1, MyBitmap.GetPixel(i, height - x - 1)); } x++; g.Clear(Color.Gray); g.DrawImage(bitmap, 0, 0); System.Threading.Thread.Sleep(10); } } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示"); } } /// /// 上下翻转 /// /// Bitmap 对象 /// PictureBox 对象 public static void FanZhuan_ShangXia(Bitmap MyBitmap, PictureBox picBox) { //以上下反转方式显示图像 try { int width = MyBitmap.Width; //图像宽度 int height = MyBitmap.Height; //图像高度 Graphics g = picBox.CreateGraphics(); g.Clear(Color.Gray); //初始为全灰色 for (int i = -width / 2; i <= width / 2; i++) { g.Clear(Color.Gray); //初始为全灰色 int j = Convert.ToInt32(i * (Convert.ToSingle(height) / Convert.ToSingle(width))); Rectangle DestRect = new Rectangle(0, height / 2 - j, width, 2 * j); Rectangle SrcRect = new Rectangle(0, 0, MyBitmap.Width, MyBitmap.Height); g.DrawImage(MyBitmap, DestRect, SrcRect, GraphicsUnit.Pixel); System.Threading.Thread.Sleep(10); } } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示"); } } /// /// 左右对接 /// /// Bitmap 对象 /// PictureBox 对象 public static void DuiJie_ZuoYou(Bitmap MyBitmap, PictureBox picBox) { //以左右对接方式显示图像 try { int width = MyBitmap.Width; //图像宽度 int height = MyBitmap.Height; //图像高度 Graphics g = picBox.CreateGraphics(); g.Clear(Color.Gray); //初始为全灰色 Bitmap bitmap = new Bitmap(width, height); int x = 0; while (x <= width / 2) { for (int i = 0; i <= height - 1; i++) { bitmap.SetPixel(x, i, MyBitmap.GetPixel(x, i)); } for (int i = 0; i <= height - 1; i++) { bitmap.SetPixel(width - x - 1, i, MyBitmap.GetPixel(width - x - 1, i)); } x++; g.Clear(Color.Gray); g.DrawImage(bitmap, 0, 0); System.Threading.Thread.Sleep(10); } } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示"); } } /// /// 左右翻转 /// /// Bitmap 对象 /// PictureBox 对象 public static void FanZhuan_ZuoYou(Bitmap MyBitmap, PictureBox picBox) { //以左右反转方式显示图像 try { int width = MyBitmap.Width; //图像宽度 int height = MyBitmap.Height; //图像高度 Graphics g = picBox.CreateGraphics(); g.Clear(Color.Gray); //初始为全灰色 for (int j = -height / 2; j <= height / 2; j++) { g.Clear(Color.Gray); //初始为全灰色 int i = Convert.ToInt32(j * (Convert.ToSingle(width) / Convert.ToSingle(height))); Rectangle DestRect = new Rectangle(width / 2 - i, 0, 2 * i, height); Rectangle SrcRect = new Rectangle(0, 0, MyBitmap.Width, MyBitmap.Height); g.DrawImage(MyBitmap, DestRect, SrcRect, GraphicsUnit.Pixel); System.Threading.Thread.Sleep(10); } } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示"); } } /// /// 四周扩散 /// /// Bitmap 对象 /// PictureBox 对象 public static void KuoSan(Bitmap MyBitmap, PictureBox picBox) { try { int width = MyBitmap.Width; //图像宽度 int height = MyBitmap.Height; //图像高度 Graphics g = picBox.CreateGraphics(); g.Clear(Color.Gray); //初始为全灰色 for (int i = 0; i <= width / 2; i++) { int j = Convert.ToInt32(i * (Convert.ToSingle(height) / Convert.ToSingle(width))); Rectangle DestRect = new Rectangle(width / 2 - i, height / 2 - j, 2 * i, 2 * j); Rectangle SrcRect = new Rectangle(0, 0, MyBitmap.Width, MyBitmap.Height); g.DrawImage(MyBitmap, DestRect, SrcRect, GraphicsUnit.Pixel); System.Threading.Thread.Sleep(10); } } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示"); } } /// /// 上下拉伸 /// /// Bitmap 对象 /// PictureBox 对象 public static void LaShen_ShangDaoXiao(Bitmap MyBitmap, PictureBox picBox) { //以从上向下拉伸方式显示图像 try { int width = MyBitmap.Width; //图像宽度 int height = MyBitmap.Height; //图像高度 Graphics g = picBox.CreateGraphics(); g.Clear(Color.Gray); //初始为全灰色 for (int y = 1; y <= height; y++) { Bitmap bitmap = MyBitmap.Clone(new Rectangle(0, 0, width, y), System.Drawing.Imaging.PixelFormat.Format24bppRgb); g.DrawImage(bitmap, 0, 0); System.Threading.Thread.Sleep(10); } } catch (Exception ex) { MessageBox.Show(ex.Message, "信息提示"); } } }}