读取文件，C#中Image类赋值

public override void OnApplyTemplate()
{
    base.OnApplyTemplate();

    string imgtype = "*.BMP|*.JPG|*.GIF|*.PNG";
    string[] ImageType = imgtype.Split('|');

    for (int i = 0; i < ImageType.Length; i++)
    {
        string[] dirs = Directory.GetFiles(@"e:\\Images", ImageType[i]);   //dirs为绝对路径
        foreach (string dir in dirs)
        {
            Image img = new Image();
            BitmapImage bitmap = new BitmapImage(new Uri(dir, UriKind.Absolute));   //以绝对路径形式设置Uri
            img.Source = bitmap;
            img.Height = 150;
            img.Margin = new Thickness(1);
            this.wp2.Children.Add(img);
        }
    }
}