数据图标不是一个有效的C＃变量名。你可以得到最接近的是这样的：

data-icon is not a valid C# variable name. The closest you could get is this:

<%: Html.ActionLink(
    "Delete", 
    "Delete", 
    new { id = Model.ID }, 
    new Dictionary<string, string> { { "data-icon",  "ui-icon-trash" } }
) %>

当然，这个问题一直在 ASP.NET MVC 3 解决，你不再需要编写意大利面条code。所以：

Of course this issue has been addressed in ASP.NET MVC 3 and you no longer need to write spaghetti code. So:

<%: Html.ActionLink(
    "Delete", 
    "Delete", 
    new { id = Model.ID }, 
    new { data_icon, "ui-icon-trash" }
) %>

以及下划线的将被自动转换为的连字符的