/// <summary>
/// 初始化构造器，使用当前显示器的宽度
/// </summary>
/// <param name="Url">网页地址</param>
/// <param name="TargetImg">生成图片的信息</param>
public ThumbnailOperate(string Url, ThumbnailImg TargetImg) : this(Url, Screen.PrimaryScreen.Bounds.Width, TargetImg)
{
}
/// <summary>
/// 初始化构造器
/// </summary>
/// <param name="Url">网页地址</param>
/// <param name="BrowserWidth">设置浏览器宽度</param>
/// <param name="TargetImg">生成图片定义</param>
public ThumbnailOperate(string Url, int BrowserWidth, ThumbnailImg TargetImg)
{
this.Url = Url;
this.BrowserWidth = BrowserWidth;
this.TargetImg = TargetImg;
}