WPF中Image显示本地图片
1 private void SetSource(System.Windows.Controls.Image image, string fileName) 2 { 3 System.Drawing.Image sourceImage = System.Drawing.Image.FromFile(fileName); 4 int imageWidth = 0, imageHeight = 0; 5 InitializeImageSize(sourceImage, image, out imageWidth, out imageHeight); 6 7 Bitmap sourceBmp = new Bitmap(sourceImage, imageWidth, imageHeight); 8 IntPtr hBitmap = sourceBmp.GetHbitmap(); 9 BitmapSource bitmapSource = Imaging.CreateBitmapSourceFromHBitmap(hBitmap, IntPtr.Zero, Int32Rect.Empty, 10 BitmapSizeOptions.FromEmptyOptions()); 11 bitmapSource.Freeze(); 12 WriteableBitmap writeableBmp = new WriteableBitmap(bitmapSource); 13 sourceImage.Dispose(); 14 sourceBmp.Dispose(); 15 image.Source = writeableBmp; 16 } 17 18 /// <summary> 19 /// Initialize ImageSize. 20 /// </summary> 21 /// <param name="sourceImage"></param> 22 /// <param name="image"></param> 23 /// <param name="imageWidth"></param> 24 /// <param name="imageHeight"></param> 25 private static void InitializeImageSize(System.Drawing.Image sourceImage, System.Windows.Controls.Image image, 26 out int imageWidth, out int imageHeight) 27 { 28 int width = sourceImage.Width; 29 int height = sourceImage.Height; 30 float aspect = (float)width / (float)height; 31 if (image.Height != double.NaN) 32 { 33 imageHeight = Convert.ToInt32(image.Height); 34 imageWidth = Convert.ToInt32(aspect * imageHeight); 35 } 36 else if (image.Width != double.NaN) 37 { 38 imageWidth = Convert.ToInt32(image.Width); 39 imageHeight = Convert.ToInt32(image.Width / aspect); 40 } 41 else 42 { 43 imageHeight = 100; 44 imageWidth = Convert.ToInt32(aspect * imageHeight); 45 } 46 }
调用： SetSource(this.imageCur, “C:\1.png”);
