Asp.net mvc 3 子操作异常处理程序
我有一个简单的控制器:Asp.net mvc 3 子操作异常处理程序,asp.net-mvc-3,exception,filter,child-actions,Asp.net Mvc 3,Exception,Filter,Child Actions,我有一个简单的控制器: public class RedirectController : Controller { public ActionResult Index() { return View(); } [ChildActionOnly] public ActionResult Child1() { return View(); } [ChildActionOnly] public Action
public class RedirectController : Controller {
public ActionResult Index() {
return View();
}
[ChildActionOnly]
public ActionResult Child1() {
return View();
}
[ChildActionOnly]
public ActionResult Child2() {
return View();
}
[ChildActionOnly]
public ActionResult Child3() {
throw new Exception("abc");
}
}
Index.cshtml
...
@Html.Action("Child1")
...
Child1.cshtml
...
@Html.Action("Child2")
...
Child2.cshtml
...
@Html.Action("Child3")
...
Child3将抛出一个异常
抛出新异常(“abc”)
出于某种原因,我为error.cshtml设置了布局,最后导出的内容包括Index.cshtml、Child1.cshtml、Child2.cshtml和error.cshtml
所以我定义了一个自定义ExceptionFilter来处理这个异常
public class MyExceptionAttribute : ActionFilterAttribute , IExceptionFilter {
public void OnException(ExceptionContext filterContext) {
...
...
if(filterContext.ParentActionViewContext != null) {
//remove parent actions' exported contents
ViewContext par = filterContext.ParentActionViewContext;
while(null != par){
var wtr = (StringWriter)par.Writer;
wtr.GetStringBuilder().Clear();
par = par.ParentActionViewContext;
}
}
...
...
完成此筛选后,最终输出的html删除了“Index”、“Child1”和“Child2”内容,但仍输出“Layout”内容
<html>
...(Layout content)
<html>
...(Error.cshtml content)
</html>
</html>
…(版面内容)
…(Error.cshtml内容)
有没有办法删除除错误内容以外的所有内容?我有一个解决方案:
当子操作引发异常时,CustomExceptionFilter将处理该异常,并删除除布局之外的所有父操作的输出
因此,在_ViewStart.cshtml中:
@{
if(!this.ViewContext.IsChildAction) {
Layout = "~/Views/Shared/_Layout.cshtml";
}
}
我没听懂。让error.cshtml处理错误有什么不对?