# Blackboard

> GraphElement that enables user to dynamically define members of a Graph (such as fields/properties) grouped by sections (BlackboardSection).

## Definition

* **Type:** Class
* **Namespace:** [UnityEditor.Experimental.GraphView](/engine/6000.5/script-reference/unityeditor/experimental/graphview.md)
* **Assembly:** UnityEditor
* **Inherits from:** [GraphElement](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement.md)
* **Implements:** [IEventHandler](/engine/6000.5/script-reference/unityengine/uielements/ieventhandler.md), [IResolvedStyle](/engine/6000.5/script-reference/unityengine/uielements/iresolvedstyle.md), [ITransform](/engine/6000.5/script-reference/unityengine/uielements/itransform.md), [ITransitionAnimations](/engine/6000.5/script-reference/unityengine/uielements/experimental/itransitionanimations.md), [IExperimentalFeatures](/engine/6000.5/script-reference/unityengine/uielements/iexperimentalfeatures.md), [IVisualElementScheduler](/engine/6000.5/script-reference/unityengine/uielements/ivisualelementscheduler.md), [ICustomStyle](/engine/6000.5/script-reference/unityengine/uielements/icustomstyle.md), [ISelectable](/engine/6000.5/script-reference/unityeditor/experimental/graphview/iselectable.md), [ISelection](/engine/6000.5/script-reference/unityeditor/experimental/graphview/iselection.md)

```csharp
public class Blackboard : GraphElement, IEventHandler, IResolvedStyle, ITransform, ITransitionAnimations, IExperimentalFeatures, IVisualElementScheduler, ICustomStyle, ISelectable, ISelection
```

## Constructors

| Constructor                                                                                                                                       | Description              |
| ------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------ |
| [Blackboard(UnityEditor.Experimental.GraphView.GraphView)](/engine/6000.5/script-reference/unityeditor/experimental/graphview/blackboard/ctor.md) | Constructs a Blackboard. |

## Properties

| Property                                                                                                                | Description                                                                                                                |
| ----------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------- |
| [addItemRequested](/engine/6000.5/script-reference/unityeditor/experimental/graphview/blackboard/additemrequested.md)   | Called when user clicks on the Add button of this Blackboard.                                                              |
| [contentContainer](/engine/6000.5/script-reference/unityeditor/experimental/graphview/blackboard/contentcontainer.md)   | The content container of this Blackboard.                                                                                  |
| [editTextRequested](/engine/6000.5/script-reference/unityeditor/experimental/graphview/blackboard/edittextrequested.md) | Called when user has edited the text of this BlackboardField.                                                              |
| [graphView](/engine/6000.5/script-reference/unityeditor/experimental/graphview/blackboard/graphview.md)                 | The GraphView that the Blackboard is attached to.                                                                          |
| [moveItemRequested](/engine/6000.5/script-reference/unityeditor/experimental/graphview/blackboard/moveitemrequested.md) | Called when user has dragged and dropped a BlackboardField to a new location inside its BlackboardSection.                 |
| [scrollable](/engine/6000.5/script-reference/unityeditor/experimental/graphview/blackboard/scrollable.md)               | Indicates whether the content of this Blackboard can be vertically scrolled by user. It is false by default.               |
| [selection](/engine/6000.5/script-reference/unityeditor/experimental/graphview/blackboard/selection.md)                 | All selected elements in the GraphView that the Blackboard is attached to.                                                 |
| [subTitle](/engine/6000.5/script-reference/unityeditor/experimental/graphview/blackboard/subtitle.md)                   | The subtitle of this Blackboard.                                                                                           |
| [title](/engine/6000.5/script-reference/unityeditor/experimental/graphview/blackboard/title.md)                         | The title of this Blackboard.                                                                                              |
| [windowed](/engine/6000.5/script-reference/unityeditor/experimental/graphview/blackboard/windowed.md)                   | Set to true when the Blackboard displays in a separate window. Set to false when the Blackboard displays in the GraphView. |

## Methods

| Method                                                                                                                      | Description                                                                                |
| --------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------ |
| [AddToSelection](/engine/6000.5/script-reference/unityeditor/experimental/graphview/blackboard/addtoselection.md)           | Adds an element to the selection in the GraphView that the Blackboard is attached to.      |
| [ClearSelection](/engine/6000.5/script-reference/unityeditor/experimental/graphview/blackboard/clearselection.md)           | Clears the selection in the GraphView that the Blackboard is attached to.                  |
| [RemoveFromSelection](/engine/6000.5/script-reference/unityeditor/experimental/graphview/blackboard/removefromselection.md) | Removes an element from the selection in the GraphView that the Blackboard is attached to. |

## Inheritance

**Inherited Members:**

* [GraphElement.ResetLayer()](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/resetlayer.md)
* [GraphElement.OnCustomStyleResolved(ICustomStyle)](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/oncustomstyleresolved.md)
* [GraphElement.IsSelectable()](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/isselectable.md)
* [GraphElement.IsMovable()](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/ismovable.md)
* [GraphElement.IsResizable()](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/isresizable.md)
* [GraphElement.IsDroppable()](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/isdroppable.md)
* [GraphElement.IsAscendable()](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/isascendable.md)
* [GraphElement.IsRenamable()](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/isrenamable.md)
* [GraphElement.IsCopiable()](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/iscopiable.md)
* [GraphElement.IsSnappable()](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/issnappable.md)
* [GraphElement.IsGroupable()](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/isgroupable.md)
* [GraphElement.IsStackable()](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/isstackable.md)
* [GraphElement.GetGlobalCenter()](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/getglobalcenter.md)
* [GraphElement.GetPosition()](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/getposition.md)
* [GraphElement.SetPosition(Rect)](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/setposition.md)
* [GraphElement.OnSelected()](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/onselected.md)
* [GraphElement.OnUnselected()](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/onunselected.md)
* [GraphElement.HitTest(Vector2)](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/hittest.md)
* [GraphElement.Select(VisualElement, bool)](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/select.md)
* [GraphElement.Unselect(VisualElement)](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/unselect.md)
* [GraphElement.IsSelected(VisualElement)](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/isselected.md)
* [GraphElement.elementTypeColor](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/elementtypecolor.md)
* [GraphElement.layer](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/layer.md)
* [GraphElement.showInMiniMap](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/showinminimap.md)
* [GraphElement.capabilities](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/capabilities.md)
* [GraphElement.selected](/engine/6000.5/script-reference/unityeditor/experimental/graphview/graphelement/selected.md)
* [VisualElement.disabledUssClassName](/engine/6000.5/script-reference/unityengine/uielements/visualelement/disabledussclassname.md)
* [VisualElement.SetActivePseudoState(bool)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/setactivepseudostate.md)
* [VisualElement.SetCheckedPseudoState(bool)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/setcheckedpseudostate.md)
* [VisualElement.ReleaseResources()](/engine/6000.5/script-reference/unityengine/uielements/visualelement/releaseresources.md)
* [VisualElement.SendEvent(EventBase)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/sendevent.md)
* [VisualElement.SetEnabled(bool)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/setenabled.md)
* [VisualElement.MarkDirtyRepaint()](/engine/6000.5/script-reference/unityengine/uielements/visualelement/markdirtyrepaint.md)
* [VisualElement.IsMarkedForRepaint()](/engine/6000.5/script-reference/unityengine/uielements/visualelement/ismarkedforrepaint.md)
* [VisualElement.ContainsPoint(Vector2)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/containspoint.md)
* [VisualElement.GetClasses()](/engine/6000.5/script-reference/unityengine/uielements/visualelement/getclasses.md)
* [VisualElement.ClearClassList()](/engine/6000.5/script-reference/unityengine/uielements/visualelement/clearclasslist.md)
* [VisualElement.AddToClassList(string)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/addtoclasslist.md#addtoclasslist\(string\))
* [VisualElement.AddToClassList(string\[\])](/engine/6000.5/script-reference/unityengine/uielements/visualelement/addtoclasslist.md#addtoclasslist\(string\))
* [VisualElement.RemoveFromClassList(string)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/removefromclasslist.md)
* [VisualElement.ToggleInClassList(string)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/toggleinclasslist.md)
* [VisualElement.EnableInClassList(string, bool)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/enableinclasslist.md)
* [VisualElement.ClassListContains(string)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/classlistcontains.md)
* [VisualElement.FindAncestorUserData()](/engine/6000.5/script-reference/unityengine/uielements/visualelement/findancestoruserdata.md)
* [VisualElement.SetBinding(BindingId, Binding)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/setbinding.md)
* [VisualElement.GetBinding(BindingId)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/getbinding.md)
* [VisualElement.TryGetBinding(BindingId, Binding)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/trygetbinding.md)
* [VisualElement.GetBindingInfos()](/engine/6000.5/script-reference/unityengine/uielements/visualelement/getbindinginfos.md#getbindinginfos\(\))
* [VisualElement.GetBindingInfos(List\<BindingInfo>)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/getbindinginfos.md#getbindinginfos\(listbindinginfo\))
* [VisualElement.HasBinding(BindingId)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/hasbinding.md)
* [VisualElement.ClearBinding(BindingId)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/clearbinding.md)
* [VisualElement.ClearBindings()](/engine/6000.5/script-reference/unityengine/uielements/visualelement/clearbindings.md)
* [VisualElement.GetHierarchicalDataSourceContext()](/engine/6000.5/script-reference/unityengine/uielements/visualelement/gethierarchicaldatasourcecontext.md)
* [VisualElement.GetDataSourceContext(BindingId)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/getdatasourcecontext.md)
* [VisualElement.TryGetDataSourceContext(BindingId, DataSourceContext)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/trygetdatasourcecontext.md)
* [VisualElement.TryGetLastBindingToUIResult(BindingId, BindingResult)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/trygetlastbindingtouiresult.md)
* [VisualElement.TryGetLastBindingToSourceResult(BindingId, BindingResult)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/trygetlastbindingtosourceresult.md)
* [VisualElement.Add(VisualElement)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/add.md)
* [VisualElement.Insert(int, VisualElement)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/insert.md)
* [VisualElement.Remove(VisualElement)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/remove.md)
* [VisualElement.RemoveAt(int)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/removeat.md)
* [VisualElement.Clear()](/engine/6000.5/script-reference/unityengine/uielements/visualelement/clear.md#clear\(\))
* [VisualElement.Clear(VisualElementClearOptions)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/clear.md#clear\(visualelementclearoptions\))
* [VisualElement.ElementAt(int)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/elementat.md)
* [VisualElement.IndexOf(VisualElement)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/indexof.md)
* [VisualElement.Children()](/engine/6000.5/script-reference/unityengine/uielements/visualelement/children.md)
* [VisualElement.Sort(Comparison\<VisualElement>)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/sort.md)
* [VisualElement.BringToFront()](/engine/6000.5/script-reference/unityengine/uielements/visualelement/bringtofront.md)
* [VisualElement.SendToBack()](/engine/6000.5/script-reference/unityengine/uielements/visualelement/sendtoback.md)
* [VisualElement.PlaceBehind(VisualElement)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/placebehind.md)
* [VisualElement.PlaceInFront(VisualElement)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/placeinfront.md)
* [VisualElement.RemoveFromHierarchy()](/engine/6000.5/script-reference/unityengine/uielements/visualelement/removefromhierarchy.md)
* [VisualElement.GetFirstOfType\<T>()](/engine/6000.5/script-reference/unityengine/uielements/visualelement/getfirstoftype.md)
* [VisualElement.GetFirstAncestorOfType\<T>()](/engine/6000.5/script-reference/unityengine/uielements/visualelement/getfirstancestoroftype.md)
* [VisualElement.Contains(VisualElement)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/contains.md)
* [VisualElement.FindCommonAncestor(VisualElement)](/engine/6000.5/script-reference/unityengine/uielements/visualelement/findcommonancestor.md)
* [VisualElement.viewDataKey](/engine/6000.5/script-reference/unityengine/uielements/visualelement/viewdatakey.md)
* [VisualElement.userData](/engine/6000.5/script-reference/unityengine/uielements/visualelement/userdata.md)
* [VisualElement.disablePlayModeTint](/engine/6000.5/script-reference/unityengine/uielements/visualelement/disableplaymodetint.md)
* [VisualElement.usageHints](/engine/6000.5/script-reference/unityengine/uielements/visualelement/usagehints.md)
* [VisualElement.scaledPixelsPerPoint](/engine/6000.5/script-reference/unityengine/uielements/visualelement/scaledpixelsperpoint.md)
* [VisualElement.layout](/engine/6000.5/script-reference/unityengine/uielements/visualelement/layout.md)
* [VisualElement.contentRect](/engine/6000.5/script-reference/unityengine/uielements/visualelement/contentrect.md)
* [VisualElement.paddingRect](/engine/6000.5/script-reference/unityengine/uielements/visualelement/paddingrect.md)
* [VisualElement.worldBound](/engine/6000.5/script-reference/unityengine/uielements/visualelement/worldbound.md)
* [VisualElement.localBound](/engine/6000.5/script-reference/unityengine/uielements/visualelement/localbound.md)
* [VisualElement.worldTransform](/engine/6000.5/script-reference/unityengine/uielements/visualelement/worldtransform.md)
* [VisualElement.hasActivePseudoState](/engine/6000.5/script-reference/unityengine/uielements/visualelement/hasactivepseudostate.md)
* [VisualElement.hasInactivePseudoState](/engine/6000.5/script-reference/unityengine/uielements/visualelement/hasinactivepseudostate.md)
* [VisualElement.hasHoverPseudoState](/engine/6000.5/script-reference/unityengine/uielements/visualelement/hashoverpseudostate.md)
* [VisualElement.hasCheckedPseudoState](/engine/6000.5/script-reference/unityengine/uielements/visualelement/hascheckedpseudostate.md)
* [VisualElement.hasEnabledPseudoState](/engine/6000.5/script-reference/unityengine/uielements/visualelement/hasenabledpseudostate.md)
* [VisualElement.hasDisabledPseudoState](/engine/6000.5/script-reference/unityengine/uielements/visualelement/hasdisabledpseudostate.md)
* [VisualElement.hasFocusPseudoState](/engine/6000.5/script-reference/unityengine/uielements/visualelement/hasfocuspseudostate.md)
* [VisualElement.hasRootPseudoState](/engine/6000.5/script-reference/unityengine/uielements/visualelement/hasrootpseudostate.md)
* [VisualElement.pickingMode](/engine/6000.5/script-reference/unityengine/uielements/visualelement/pickingmode.md)
* [VisualElement.name](/engine/6000.5/script-reference/unityengine/uielements/visualelement/name.md)
* [VisualElement.resourcesReleased](/engine/6000.5/script-reference/unityengine/uielements/visualelement/resourcesreleased.md)
* [VisualElement.enabledInHierarchy](/engine/6000.5/script-reference/unityengine/uielements/visualelement/enabledinhierarchy.md)
* [VisualElement.enabledSelf](/engine/6000.5/script-reference/unityengine/uielements/visualelement/enabledself.md)
* [VisualElement.languageDirection](/engine/6000.5/script-reference/unityengine/uielements/visualelement/languagedirection.md)
* [VisualElement.visible](/engine/6000.5/script-reference/unityengine/uielements/visualelement/visible.md)
* [VisualElement.generateVisualContent](/engine/6000.5/script-reference/unityengine/uielements/visualelement/generatevisualcontent.md)
* [VisualElement.dataSource](/engine/6000.5/script-reference/unityengine/uielements/visualelement/datasource.md)
* [VisualElement.dataSourcePath](/engine/6000.5/script-reference/unityengine/uielements/visualelement/datasourcepath.md)
* [VisualElement.dataSourceType](/engine/6000.5/script-reference/unityengine/uielements/visualelement/datasourcetype.md)
* [VisualElement.experimental](/engine/6000.5/script-reference/unityengine/uielements/visualelement/experimental.md)
* [VisualElement.hierarchy](/engine/6000.5/script-reference/unityengine/uielements/visualelement/hierarchy-1.md)
* [VisualElement.parent](/engine/6000.5/script-reference/unityengine/uielements/visualelement/parent.md)
* [VisualElement.panel](/engine/6000.5/script-reference/unityengine/uielements/visualelement/panel.md)
* [VisualElement.visualTreeAssetSource](/engine/6000.5/script-reference/unityengine/uielements/visualelement/visualtreeassetsource.md)
* [VisualElement.this\[int\]](/engine/6000.5/script-reference/unityengine/uielements/visualelement/item.md)
* [VisualElement.childCount](/engine/6000.5/script-reference/unityengine/uielements/visualelement/childcount.md)
* [VisualElement.schedule](/engine/6000.5/script-reference/unityengine/uielements/visualelement/schedule.md)
* [VisualElement.style](/engine/6000.5/script-reference/unityengine/uielements/visualelement/style.md)
* [VisualElement.resolvedStyle](/engine/6000.5/script-reference/unityengine/uielements/visualelement/resolvedstyle.md)
* [VisualElement.customStyle](/engine/6000.5/script-reference/unityengine/uielements/visualelement/customstyle.md)
* [VisualElement.styleSheets](/engine/6000.5/script-reference/unityengine/uielements/visualelement/stylesheets.md)
* [VisualElement.tooltip](/engine/6000.5/script-reference/unityengine/uielements/visualelement/tooltip.md)
* [Focusable.Blur()](/engine/6000.5/script-reference/unityengine/uielements/focusable/blur.md)
* [Focusable.focusable](/engine/6000.5/script-reference/unityengine/uielements/focusable/focusable.md)
* [Focusable.tabIndex](/engine/6000.5/script-reference/unityengine/uielements/focusable/tabindex.md)
* [Focusable.delegatesFocus](/engine/6000.5/script-reference/unityengine/uielements/focusable/delegatesfocus.md)
* [CallbackEventHandler.RegisterCallback\<T>(EventCallback\<T>, TrickleDown)](/engine/6000.5/script-reference/unityengine/uielements/callbackeventhandler/registercallback.md)
* [CallbackEventHandler.RegisterCallbackOnce\<T>(EventCallback\<T>, TrickleDown)](/engine/6000.5/script-reference/unityengine/uielements/callbackeventhandler/registercallbackonce.md)
* [CallbackEventHandler.RegisterCallback\<T, U>(EventCallback\<T, T>, T, TrickleDown)](/engine/6000.5/script-reference/unityengine/uielements/callbackeventhandler/registercallback.md)
* [CallbackEventHandler.RegisterCallbackOnce\<T, U>(EventCallback\<T, T>, T, TrickleDown)](/engine/6000.5/script-reference/unityengine/uielements/callbackeventhandler/registercallbackonce.md)
* [CallbackEventHandler.RegisterCallback\<T>(EventCallback\<T>, CallbackOptions)](/engine/6000.5/script-reference/unityengine/uielements/callbackeventhandler/registercallback.md)
* [CallbackEventHandler.RegisterCallback\<T, U>(EventCallback\<T, T>, T, CallbackOptions)](/engine/6000.5/script-reference/unityengine/uielements/callbackeventhandler/registercallback.md)
* [CallbackEventHandler.UnregisterCallback\<T>(EventCallback\<T>, TrickleDown)](/engine/6000.5/script-reference/unityengine/uielements/callbackeventhandler/unregistercallback.md)
* [CallbackEventHandler.UnregisterCallback\<T>(EventCallback\<T>, CallbackOptions)](/engine/6000.5/script-reference/unityengine/uielements/callbackeventhandler/unregistercallback.md)
* [CallbackEventHandler.UnregisterCallback\<T, U>(EventCallback\<T, T>, TrickleDown)](/engine/6000.5/script-reference/unityengine/uielements/callbackeventhandler/unregistercallback.md)
* [CallbackEventHandler.UnregisterCallback\<T, U>(EventCallback\<T, T>, CallbackOptions)](/engine/6000.5/script-reference/unityengine/uielements/callbackeventhandler/unregistercallback.md)
* [CallbackEventHandler.UnregisterAllRemovableCallbacks()](/engine/6000.5/script-reference/unityengine/uielements/callbackeventhandler/unregisterallremovablecallbacks.md)
* [CallbackEventHandler.HasTrickleDownHandlers()](/engine/6000.5/script-reference/unityengine/uielements/callbackeventhandler/hastrickledownhandlers.md)
* [CallbackEventHandler.HasBubbleUpHandlers()](/engine/6000.5/script-reference/unityengine/uielements/callbackeventhandler/hasbubbleuphandlers.md)
* [CallbackEventHandler.HandleEventBubbleUp(EventBase)](/engine/6000.5/script-reference/unityengine/uielements/callbackeventhandler/handleeventbubbleup.md)
* [CallbackEventHandler.HandleEventTrickleDown(EventBase)](/engine/6000.5/script-reference/unityengine/uielements/callbackeventhandler/handleeventtrickledown.md)
* [CallbackEventHandler.NotifyPropertyChanged(BindingId)](/engine/6000.5/script-reference/unityengine/uielements/callbackeventhandler/notifypropertychanged.md)