选择图片并加载显示

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private void shopPicButton_Click(object sender, RoutedEventArgs e)       {//选择图片并加载显示           OpenFileDialog openFileDialog = new OpenFileDialog();           openFileDialog.Filter = "JPEG Files(*.jpg) | *.jpg | PNG Files(*.png) | *.png | BMP Files(*.bmp) | *.bmp | All files(*.*) | *.*";           openFileDialog.Title = "选择一个图片文件";           if (openFileDialog.ShowDialog()==true)           {               BitmapImage bitmapImage = new BitmapImage();               bitmapImage.BeginInit();               bitmapImage.UriSource = new Uri(openFileDialog.FileName);               //bitmapImage.DecodePixelWidth = 200;               bitmapImage.EndInit();               myImage.Source = bitmapImage;           }       }         private void clearPicButton_Click(object sender, RoutedEventArgs e)       {//清除图片           myImage.Source = null;       }