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         /// 
19         /// Initialize ImageSize.20         /// 
21         /// 22         /// 23         /// 24         /// 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             else42             {43                 imageHeight = 100;44                 imageWidth = Convert.ToInt32(aspect * imageHeight);45             }46         }

调用：  SetSource(this.imageCur, “C:\1.png”);