更新时间:2021-12-30 21:51:28
可能您的项目中缺少对 System.Web.Http
程序集的引用?
Probably you are missing the reference to System.Web.Http
assembly in your project?
所以您需要:
System.Web.Http
; 添加到您的控制器中;
要添加参考,您需要执行以下步骤:
To add Reference you need to do next steps:
System.Web.Http
. System.Web.Http
,然后单击确定".System.Web.Http
into search on the right side.System.Web.Http
, and then click OK.链接: