Exceptions in System.Web.Routing.RouteCollection.GetRouteData
问题 I've been getting two exceptions at random times in my asp.net mvc code running on iis7: Exception type: InvalidOperationException Exception message: Collection was modified; enumeration operation may not execute. at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource) at System.Collections.Generic.List'1.Enumerator.MoveNextRare() at System.Collections.Generic.List'1.Enumerator.MoveNext() at System.Web.Routing.RouteCollection.GetRouteData(HttpContextBase httpContext)