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BindingRelay Class

A simple helper to relay the data context to objects that don't live in the visual tree.
Inheritance Hierarchy

Namespace:  TomsToolbox.Wpf
Assembly:  TomsToolbox.Wpf (in TomsToolbox.Wpf.dll)
Syntax
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public class BindingRelay : Freezable

The BindingRelay type exposes the following members.

Constructors
  NameDescription
Public methodBindingRelay
Initializes a new instance of the BindingRelay class
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Properties
  NameDescription
Public propertyDataContext
Gets or sets the data to be relayed, usually the DataContext of the owning object.
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Methods
Fields
  NameDescription
Public fieldStatic memberDataContextProperty
Identifies the DataContext dependency property.
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Extension Methods
  NameDescription
Public Extension MethodAncestors
Returns an enumeration of the ancestor elements in the logical tree of this element.
(Defined by DependencyObjectExtensions.)
Public Extension MethodAncestorsAndSelf
Returns an enumeration of elements that contain this element, and the ancestors in the logical tree of this element.
(Defined by DependencyObjectExtensions.)
Public Extension MethodGetExportProvider
Gets the active export provider for the specified object.
(Defined by ExportProviderLocator.)
Public Extension MethodGetMissingExportProviderMessage
Gets the message to show when an export provider could not be located in the visual tree.
(Defined by ExportProviderLocator.)
Public Extension MethodGetRootVisual
Gets the root visual for the item.
(Defined by DependencyObjectExtensions.)
Public Extension MethodGetValueT
Gets the value of a dependency property using SafeCastT(Object).
(Defined by DependencyObjectExtensions.)
Public Extension MethodGetWindowHandle
Gets the window handle of the HwndSource hosting this item.
(Defined by DependencyObjectExtensions.)
Public Extension MethodSafeCastT
Performs a cast from object to T, avoiding possible null violations if T is a value type.
(Defined by ObjectExtensions.)
Public Extension MethodSetExportProvider
Sets the export provider.
(Defined by ExportProviderLocator.)
Public Extension MethodTryFindAncestorTOverloaded.
Returns the first element in the ancestor list that implements the type of the type parameter.
(Defined by DependencyObjectExtensions.)
Public Extension MethodTryFindAncestorT(FuncT, Boolean)Overloaded.
Returns the first element in the ancestor list that implements the type of the type parameter.
(Defined by DependencyObjectExtensions.)
Public Extension MethodTryFindAncestorOrSelfTOverloaded.
Returns the first element in the ancestor list that implements the type of the type parameter.
(Defined by DependencyObjectExtensions.)
Public Extension MethodTryFindAncestorOrSelfT(FuncT, Boolean)Overloaded.
Returns the first element in the ancestor list that implements the type of the type parameter.
(Defined by DependencyObjectExtensions.)
Public Extension MethodTryGetExportProvider
Gets the active export provider for the specified object, or null if no export provider is registered.
(Defined by ExportProviderLocator.)
Public Extension MethodTryGetRootVisual
Gets the root visual for the item.
(Defined by DependencyObjectExtensions.)
Public Extension MethodVisualAncestors
Returns an enumeration of the ancestor elements in the visual tree of this element.
(Defined by DependencyObjectExtensions.)
Public Extension MethodVisualAncestorsAndSelf
Returns an enumeration of elements that contains this element, and the ancestors in the visual tree of this element.
(Defined by DependencyObjectExtensions.)
Public Extension MethodVisualChildren
Enumerates the immediate children of the specified item.
(Defined by DependencyObjectExtensions.)
Public Extension MethodVisualChildrenAndSelf
Enumerates the specified item and it's immediate children.
(Defined by DependencyObjectExtensions.)
Public Extension MethodVisualDescendants
Enumerates all visuals descendants of the specified item.
(Defined by DependencyObjectExtensions.)
Public Extension MethodVisualDescendantsAndSelf
Enumerates the specified item and all it's visual descendants.
(Defined by DependencyObjectExtensions.)
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Examples
XAML
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<DataGrid>
  <DataGrid.Resources>
    <local:BindingRelay x:Key="relay" DataContext="{Binding}"/>
  </DataGrid.Resources>
  <DataGrid.Columns>
    <DataGridTextColumn Visibility="{Binding DataContext.MyColumnVisibility, Source={StaticResource relay}}"/>
  </DataGrid.Columns>
</DataGrid>
See Also