TreeView.HideSelection Property

Definition

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Source:

TreeView.cs

Gets or sets a value indicating whether the selected tree node remains highlighted even when the tree view has lost the focus.

public:
 property bool HideSelection { bool get(); void set(bool value); };

public bool HideSelection { get; set; }

member this.HideSelection : bool with get, set

Public Property HideSelection As Boolean

Property Value

Boolean

true if the selected tree node is not highlighted when the tree view has lost the focus; otherwise, false. The default is true.

Examples

The following code example demonstrates how to use the HideSelection property. To run this example, paste the following code in a form and call the InitializeSelectedTreeView method in the form's constructor or Load event handler.

System::Windows::Forms::TreeView^ TreeView2;

// Initialize the TreeView to blend with the form, giving it the 
// same color as the form and no border.
void InitializeSelectedTreeView()
{
   
   // Create a new TreeView control and set the location and size.
   this->TreeView2 = gcnew System::Windows::Forms::TreeView;
   this->TreeView2->Location = System::Drawing::Point( 72, 48 );
   this->TreeView2->Size = System::Drawing::Size( 200, 200 );
   this->TreeView2->BorderStyle = BorderStyle::Fixed3D;
   
   // Set the HideSelection property to false to keep the 
   // selection highlighted when the user leaves the control. 
   this->TreeView1->HideSelection = false;
   
   // Add the nodes.
   array<TreeNode^>^temp0 = {gcnew TreeNode( "Full Color" ),gcnew TreeNode( "Project Wizards" ),gcnew TreeNode( "Visual C# and Visual Basic Support" )};
   array<TreeNode^>^temp1 = {gcnew TreeNode( "Pentium 133 MHz or faster processor " ),gcnew TreeNode( "Windows 98 or later" ),gcnew TreeNode( "100 MB Disk space" )};
   array<TreeNode^>^temp2 = {gcnew TreeNode( "Features",temp0 ),gcnew TreeNode( "System Requirements",temp1 )};
   this->TreeView1->Nodes->AddRange( temp2 );
   
   // Set the tab index and add the TreeView to the form.
   this->TreeView1->TabIndex = 0;
   this->Controls->Add( this->TreeView1 );
}

// Declare the TreeView control.
internal System.Windows.Forms.TreeView TreeView2;

// Initialize the TreeView to blend with the form, giving it the 
// same color as the form and no border.
private void InitializeSelectedTreeView()
{

    // Create a new TreeView control and set the location and size.
    this.TreeView2 = new System.Windows.Forms.TreeView();
    this.TreeView2.Location = new System.Drawing.Point(72, 48);
    this.TreeView2.Size = new System.Drawing.Size(200, 200);

    this.TreeView2.BorderStyle = BorderStyle.Fixed3D;
    
    // Set the HideSelection property to false to keep the 
    // selection highlighted when the user leaves the control. 
    // This helps it blend with form.
    this.TreeView2.HideSelection = false;

    // Add the nodes.
    this.TreeView2.Nodes.AddRange(new TreeNode[]
        {new TreeNode("Features", 
            new TreeNode[]{
            new TreeNode("Full Color"), 
            new TreeNode("Project Wizards"), 
            new TreeNode("Visual C# and Visual Basic Support")}), 
            new TreeNode("System Requirements", 
            new TreeNode[]{
                new TreeNode("Pentium 133 MHz or faster processor "),
                new TreeNode("Windows 98 or later"), 
                new TreeNode("100 MB Disk space")})
        });

    // Set the tab index and add the TreeView to the form.
    this.TreeView2.TabIndex = 0;
    this.Controls.Add(this.TreeView2);
}

' Declare the TreeView control.
Friend WithEvents TreeView2 As System.Windows.Forms.TreeView

' Initialize the TreeView to blend with the form, giving it the 
' same color as the form and no border.
Private Sub InitializeSelectedTreeView()

    ' Create a new TreeView control and set the location and size.
    Me.TreeView2 = New System.Windows.Forms.TreeView
    Me.TreeView2.Location = New System.Drawing.Point(72, 48)
    Me.TreeView2.Size = New System.Drawing.Size(200, 200)
    Me.TreeView2.BorderStyle = BorderStyle.Fixed3D
   
    ' Set the HideSelection property to false to keep the 
    ' selection highlighted when the user leaves the control. 
    Me.TreeView2.HideSelection = False

    ' Add the nodes.
    Me.TreeView2.Nodes.AddRange(New System.Windows.Forms.TreeNode() _
        {New System.Windows.Forms.TreeNode("Features", _
        New System.Windows.Forms.TreeNode() _
        {New System.Windows.Forms.TreeNode("Full Color"), _
        New System.Windows.Forms.TreeNode("Project Wizards"), _
        New System.Windows.Forms.TreeNode("Visual C# and Visual Basic Support")}), _
        New System.Windows.Forms.TreeNode("System Requirements", _
        New System.Windows.Forms.TreeNode() _
        {New System.Windows.Forms.TreeNode _
        ("Pentium 133 MHz or faster processor "), _
        New System.Windows.Forms.TreeNode("Windows 98 or later"), _
        New System.Windows.Forms.TreeNode("100 MB Disk space")})})

    ' Set the tab index and add the TreeView to the form.
    Me.TreeView2.TabIndex = 0
    Me.Controls.Add(Me.TreeView2)
End Sub

Remarks

When this property is set to false, selected nodes in the TreeView control remain highlighted in a different color than the current selection color when the TreeView control loses focus. You can use this property to keep items that are selected by the user visible when the user clicks a different control on the form or moves to a different window.

Note

If you are concerned with the accessibility of your applications, it is recommended that you set the HideSelection property to false.

See also

• SelectedNode