Output caching on PartialViews doesn't work

OutputCaching on the main controller actions seems to work fine but for PartialViews they don't seem to work as expected.

I added the attribute in one of the partialviews, debugged it. I continuously hit the breakpoint inside the method (which i think means output caching isn't working). I tried providing parameters, cacheprofiles, enablingoutputcaching and fragments but same effect. Is there something else that I am missing?

[ValidateInput(false)]
        [OutputCache(Duration = 60000, VaryByParam = "componentId;")]
        public PartialViewResult NewCategoryComboPartial(string componentId)
        {
            //ComponentId
            ViewData[ControllerEnums.GlobalViewDataProperty.ComponentId.ToString()] = componentId;

            //ViewModel
            ViewData[ControllerEnums.GlobalViewDataProperty.ProfileComponentCategories.ToString()] = GetComponentCategoriesList();

            return PartialView("~/Views/Compliance/Profile/Partials/NewCategoryCombo.ascx");
        }

Is it because of an existing action filter? ValidateInputAttribute? My PartialView()?

Thanks in advance.

UPDATE:

Below is the code snippet from the main view on how the partialview is declared.

        <div id="compliance-navigation-control">
            <% Html.RenderPartial("~/Views/Shared/Compliance/ComplianceNavigationControl.ascx", Model.PandCRecord); %>
        </div>

Below is the content of the partialview

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<dynamic>" %>
<%@ Import Namespace="atp.webnav.Web.Controllers" %>
<%@ Import Namespace="atp.webnav.Web.Utilities" %>

<% Html.Dev开发者_开发问答Express().ComboBox(x =>
        {
            x.Name = "categoryComboBox_" + ViewData[ControllerEnums.GlobalViewDataProperty.ComponentId.ToString()].ToString();  
            x.Theme = "Glass";
            x.Width = Unit.Percentage(100);
            x.Properties.ValueType = typeof(string);
            x.Properties.TextField = "Name";
            x.Properties.ValueField = "Id";
            x.SelectedIndex = 0;
            x.Properties.DropDownStyle = DropDownStyle.DropDown;
            x.Properties.MaxLength = 30;
            x.Properties.IncrementalFilteringMode = IncrementalFilteringMode.StartsWith;
            x.Properties.AllowUserInput = true;
            x.CallbackRouteValues = new {Controller = "Profile", Action = "NewCategoryComboPartial"};
            x.Properties.EnableCallbackMode = true;
            x.Properties.CallbackPageSize = 1000;
            x.Properties.ClientSideEvents.BeginCallback = "webnav.compliance.profile.categoryComboBox_OnBeginCallback";
            x.Properties.ClientSideEvents.SelectedIndexChanged = "webnav.compliance.profile.categoryComboBox_OnSelectedIndexChanged"; 
            x.Properties.ClientSideEvents.EndCallback = "webnav.compliance.profile.categoryComboBox_OnSelectedIndexChanged"; 
            x.Properties.ClientSideEvents.CallbackError = DevExpressGridViewHelper.HandleCallbackErrors;

            x.Properties.EnableSynchronizationOnPerformCallback = true;
        })
        .BindList(ViewData[ControllerEnums.GlobalViewDataProperty.ProfileComponentCategories.ToString()])
        .Render();     
%>

Essentially this combobox is a devexpress combobox that has autocomplete features. It uses callbacks to the controller actions to get the data based on the value selected. I am trying to see if I can cache the results of the callback. Thanks.

How are you calling it? Using Html.Partial or Html.Action (as a child action)?

Quoting from Donut Hole Caching in ASP.NET MVC

"the Html.RenderPartial method ignores any OutputCache directives on the view user control" so use Html.Action/Html.RenderAction. As they say here Caching ChildActions using cache profiles won't work use parameters Duraction and optionally VaryByParam. Profile wont work.