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Dashboard Item Caption

  • 6 min to read

Each dashboard item has a caption that is displayed at the top of this item. The caption can contain static text, svg images, and command buttons. These elements are called toolbar items:


Caption Overview

You can control the dashboard item caption's visibility.

  • When the caption is on, it is always displayed at the top of the dashboard item. Some command buttons are displayed when you hover the mouse pointer over them.
  • When the caption is off, it is not visible by default. Some command buttons are displayed in a floating panel when you hover the mouse pointer over them. On touch-based devices, you need to do extra click to show the caption elements when the caption is hidden.

Go to the dashboard item Options menu and use the Show Caption option to control the caption visibility:


Use the DashboardItem.showCaption property to control the caption visibility in code.


The Range Filter dashboard item's caption is not visible by default.

The dashboard item caption consists of the following elements:

  • A static item is visible only if the caption is enabled (for example, the item caption, the data reducing icon).
  • An action item is displayed only when the mouse pointer hovers over the dashboard item caption (for instance, the Export To and Values buttons).
  • A state item is displayed only in specific dashboards states (for example, the Drill Up and Clear Master Filter buttons).
  • A navigation item allows you to navigate through different dashboard screens (for example, Dashboards and Back buttons in mobile layout).

The table below lists the information and buttons that can be displayed in the dashboard item caption.

Static items

Data Reducing icon

Shows that visible data is limited.


Drill-Down Text

Shows a value or values from the current drill-down hierarchy. See Drill-Down for more details.


Caption Text

Shows a static text in the caption. Use the property to set a caption text.

Action items

Maximize button

Expands any dashboard item into the whole dashboard size to examine data in greater detail. Refer to Dashboard Items Layout for more information.

Restore button

Restores the expanded item to its initial state.

Export to button

Invokes the export menu for a dashboard item. To learn how to export individual dashboard items, see Exporting.

Values button

Invokes a drop-down menu that allows you to switch between provided values (in the pie, card, gauge and maps dashboard items). To learn more, see the Providing Data topic for the corresponding dashboard item.

Multi-Select button

Allows you to filter data by selecting multiple elements in dashboard items.

Select Date Time Period menu / button

Allows you to select date-time periods for the RangeFilter and DateFilter items.

Filters button

Displays filters affecting the current dashboard item or entire dashboard. This button is only available in mobile layout.

State items

Clear Master Filter button

Allows you to reset filtering when a dashboard item acts as the Master Filter. To learn more, see Master Filtering.

Drill Up button

Allows you to return to the previous detail level when this item's drill-down capability is enabled.

Clear Selection button

Allows you to clear the selection inside an item.

Initial Extent button

Restores the default size and position of the Map dashboard items.

Navigation items


Dashboards button

Displays a list of available dashboards.

Back button

Returns to the dashboard items list.


The Web Dashboard allows customizing the dashboard item's caption and dashboard title. For instance, you can add custom command buttons, create additional menus, add static texts, etc. Use the DashboardItemCaptionToolbarOptions class to get access to a specific toolbar item's collection in the dashboard item caption (like command buttons or static text). The ViewerToolbarItem object represents a toolbar item.

Use the following members to customize the dashboard item's caption:




Allows you to customize a dashboard item's caption (for instance, add custom buttons, menus, etc.).


Specifies the JavaScript function (or its name) executed before the dashboard item caption toolbar is updated.


Gets or sets the name of the JavaScript function or the entire code which will handle the client ASPxClientDashboard.ItemCaptionToolbarUpdated event.


Specifies a handler for the event occurring before the dashboard item caption toolbar is updated.

Example 1: Add a Toolbar Item

The following example shows how to add a toolbar item to the dashboard item caption. The code snippet below creates a custom button with a popup menu for the Chart dashboard item. The ItemCaptionToolbarUpdated event is used to customize the dashboard item caption. The button belongs to the actionItems collection and is displayed only when the mouse pointer hovers over the dashboard item caption. The popup menu contains three icon elements.

The image below shows the result:

extensions: {
  "viewer-api": {
      onItemCaptionToolbarUpdated: function (e) {
        if (e.itemName === "chartDashboardItem1") {
            type: "menu",
            icon: "grayCircle",
            menu: {
              type: "icons",
              items: ["greenCircle","yellowCircle","redCircle"],
              selectionMode: "none",
              title: "Circles",
              itemClick: function (itemData, itemElement, index) {

Example 2: Change a Toolbar Item

The following example shows how to change the specific toolbar item. The code snippet below changes the Chart's caption:

extensions: { 
    'viewer-api': {
         onItemCaptionToolbarUpdated: function (e) {
            if (e.itemName === "chartDashboardItem1") {     
                var caption = e.options.staticItems.filter(function(item) { 
                    return === 'item-caption'
                if(caption.length > 0) {
                    caption[0].text = 'Sales';

Example 3: Remove a Toolbar Item

The following example shows how to delete a specific element from the toolbar items collection. The code snippet below removes the dashboard item caption:

extensions: { 
    'viewer-api': {
         onItemCaptionToolbarUpdated: function (e) {
            if (e.itemName === "chartDashboardItem1") {     
                e.options.staticItems = e.options.staticItems.filter(function(item) { 
                    return !== 'item-caption'

See Client-Side API Overview to learn more about available client-side customization capabilities.

Refer to the Array documentation for information on how to manage the collection of toolbar items.