vb.net - 为什么新使用 {} 工作，但 New With {} 不工作？

Question

我一直用New With {}没问题。为什么这不一样？

Razor VB.NET 代码

Using Ajax.BeginForm(New AjaxOptions With {.HttpMethod = "Post"})
    @* no problem *@
End Using

Using Ajax.BeginForm(New With {.HttpMethod = "Post"})
    @* Value of type '<anonymous type>' cannot be converted to 'System.Web.Mvc.Ajax.AjaxOptions'. *@
End Using

Answer 1

匿名类型( New With {}) 不会扩展/继承- 并且需要AjaxOptions符合AjaxOptions的对象。BeginForm