MVC.Net：压缩/保存图片缩略图

通常用户上传的图片需要压缩或者生成缩略图。用System.Web.Helpers.WebImage的Resize方法可以很方便的实现这一功能。示例代码如下：

 /// <summary>
 /// 保存缩略图
 /// </summary>
 /// <param name="file">用户上传的文件</param>
 /// <param name="fileName">想要保存的文件名</param>
 /// <param name="uploadPath">上传地址</param>
 /// <returns></returns>
 private bool SaveThumbFile(HttpPostedFileBase file, string fileName, string uploadPath, int postId)
 {
   try
   {
       var thumbImage = new WebImage(file.InputStream);
       thumbImage.Resize(, );
       var thumbPath = Path.Combine(Server.MapPath("~/Content/uploads/Images/Thumb"),
           fileName);
       thumbImage.Save(thumbPath);
       return true;
   }
   catch
   {
       return false;
   }
 }