TreeView.SelectedValue Property

Reference

Definition

Namespace:: System.Windows.Controls

Assembly:: PresentationFramework.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets the value of the property that is the specified by SelectedValuePath for the SelectedItem.

public:
 property System::Object ^ SelectedValue { System::Object ^ get(); };

[System.ComponentModel.Bindable(true)]
public object SelectedValue { get; }

[<System.ComponentModel.Bindable(true)>]
member this.SelectedValue : obj

Public ReadOnly Property SelectedValue As Object

Property Value

Object

The value of the property that is specified by the SelectedValuePath for the SelectedItem, or null if no item is selected. The default value is null.

Attributes: BindableAttribute

Examples

The following example shows a TreeView that uses a HierarchicalDataTemplate to display the EmployeeName and EmployeeWorkDay properties of an Employee and sets the SelectedValue property to the EmployeeNumber. When you select an EmployeeName in the TreeView, the SelectedValue is set to the EmployeeNumber.

<TreeView ItemsSource="{Binding Source={StaticResource myEmployeeData},
    XPath=EmployeeInfo}" 
    Name="myTreeView" 
    SelectedValuePath="EmployeeNumber" 
    />

<TextBlock Margin="10">SelectedValuePath: </TextBlock>
<TextBlock Margin="10,0,0,0" 
           Text="{Binding ElementName=myTreeView, 
                          Path=SelectedValuePath}"
           Foreground="Blue"/>

<TextBlock Margin="10">SelectedValue: </TextBlock>
<TextBlock Margin="10,0,0,0" 
           Text="{Binding ElementName=myTreeView, 
                          Path=SelectedValue}"
           Foreground="Blue"/>

Remarks

The SelectedValuePath property specifies the path to the property that is used to determine the value of the SelectedValue property. For example, assume that a TreeView is bound to a collection of objects of type Employee, which has two properties called EmployeeName and EmployeeNumber. You can use a HierarchicalDataTemplate to display the value of EmployeeName in the TreeView and set SelectedValuePath to "EmployeeNumber" to have SelectedValue return the value of EmployeeNumber.

The SelectedValue property is a read-only property. To change the value of a selected item in a TreeView, use the SelectedItem property to access the TreeViewItem.

Dependency Property Information


Identifier field	SelectedValueProperty
Metadata properties set to `true`	None

Applies to

Dela via