显示图片
grid.Column(null,"图片",format:p=>Html.Raw(string.Format("<img src='{0}'/>",p.ImageUrl)),style:"g-img"),
日期格式：
grid.Column("EditDate", "修改日期", (p) => string.Format("{0:yyyy/MM/dd}", p.EditDate), "g-date"),
字符串截取：
grid.Column("Title", "标题", format: p => Html.Raw(string.Format("<a href='Home/Content/{0}'>{1}</a>", p.ID, (p.Title.Length > 26 ? p.Title.Substring(0, 25) + "..." : p.title))), style: "g-txt"),