私有void btnUploadLogo_Click（对象发送方，路由的事件参数e）{打开文件对话框op =新的打开文件对话框（）;

op.Title = "Select a picture";
        op.Filter = "All supported graphics|*.jpg;*.jpeg;*.png|" +
          "JPEG (*.jpg;*.jpeg)|*.jpg;*.jpeg|" +
          "Portable Network Graphic (*.png)|*.png";
        if (op.ShowDialog() == true)
        {
            string appPath = Path.GetDirectoryName(System.AppDomain.CurrentDomain.BaseDirectory) + @"\assets\";
            var fileNameToSave = DateTime.Now.ToFileNameFormat() + Path.GetExtension(op.SafeFileName);
            var imagePath = Path.Combine(appPath + fileNameToSave);

            if (!Directory.Exists(appPath))
            {
                Directory.CreateDirectory(appPath);
            }

            File.Copy(op.FileName, imagePath);

            imgUpload.Source = new BitmapImage(new Uri(imagePath));
            panelImg.Visibility = Visibility.Visible;
        }
    }`private void btnUploadLogo_Click(object sender, RoutedEventArgs e)
    {
        OpenFileDialog op = new OpenFileDialog();

        op.Title = "Select a picture";
        op.Filter = "All supported graphics|*.jpg;*.jpeg;*.png|" +
          "JPEG (*.jpg;*.jpeg)|*.jpg;*.jpeg|" +
          "Portable Network Graphic (*.png)|*.png";
        if (op.ShowDialog() == true)
        {
            string appPath = Path.GetDirectoryName(System.AppDomain.CurrentDomain.BaseDirectory) + @"\assets\";
            var imagePath = Path.Combine(appPath + op.SafeFileName);

            if (!Directory.Exists(appPath))
            {
                Directory.CreateDirectory(appPath);
            }

            File.Copy(op.FileName, imagePath, true);

            imgUpload.Source = new BitmapImage(new Uri(imagePath));
            panelImg.Visibility = Visibility.Visible;
        }
    }