Razor 文章暫放

有些東西之後不想花太多時間找，就暫時放這邊吧

把字串用Html方式顯示
https://stackoverflow.com/questions/27284734/render-a-string-as-html-in-c-sharp-razor

Html Helper 擴充函式、TagBuilder 組出 img 的  html tag
http://www.itorian.com/2012/10/html-helper-for-image-htmlimage.html