TreeView.SelectedNodeStyle TreeView.SelectedNodeStyle TreeView.SelectedNodeStyle TreeView.SelectedNodeStyle Property

Definizione

Ottiene l'oggetto TreeNodeStyle che controlla l'aspetto del nodo selezionato nel controllo TreeView.Gets the TreeNodeStyle object that controls the appearance of the selected node in the TreeView control.

public:
 property System::Web::UI::WebControls::TreeNodeStyle ^ SelectedNodeStyle { System::Web::UI::WebControls::TreeNodeStyle ^ get(); };
[System.Web.UI.PersistenceMode(System.Web.UI.PersistenceMode.InnerProperty)]
public System.Web.UI.WebControls.TreeNodeStyle SelectedNodeStyle { get; }
member this.SelectedNodeStyle : System.Web.UI.WebControls.TreeNodeStyle
Public ReadOnly Property SelectedNodeStyle As TreeNodeStyle

Valore della proprietà

Oggetto TreeNodeStyle che rappresenta lo stile del nodo selezionato nel controllo TreeView.A TreeNodeStyle that represents the style of the selected node in the TreeView control. Il valore predefinito è null e indica che la proprietà SelectedNodeStyle non è impostata.The default is null, which indicates that the SelectedNodeStyle property is not set.

Esempi

Nell'esempio di codice riportato di seguito viene illustrato SelectedNodeStyle come utilizzare la proprietà per controllare l'aspetto del nodo selezionato TreeView nel controllo.The following code example demonstrates how to use the SelectedNodeStyle property to control the appearance of the selected node in the TreeView control.


<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

    void Select_Change(Object sender, EventArgs e)
    {

        Message.Text = "You selected: " + LinksTreeView.SelectedNode.Text;

    }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >

    <head runat="server">
    <title>TreeView SelectedNodeStyle Example</title>
</head>
<body>
        <form id="form1" runat="server">
        
            <h3>TreeView SelectedNodeStyle Example</h3>

            <asp:TreeView id="LinksTreeView"
                Font-Names= "Arial"
                ForeColor="Blue"
                SelectedNodeStyle-ForeColor="Green"
                SelectedNodeStyle-VerticalPadding="0"
                OnSelectedNodeChanged="Select_Change"   
                runat="server">
                 
                <LevelStyles>
                
                    <asp:TreeNodeStyle ChildNodesPadding="10" 
                        Font-Bold="true" 
                        Font-Size="12pt" 
                        ForeColor="DarkGreen"/>
                    <asp:TreeNodeStyle ChildNodesPadding="5" 
                        Font-Bold="true" 
                        Font-Size="10pt"/>
                    <asp:TreeNodeStyle ChildNodesPadding="5" 
                        Font-UnderLine="true" 
                        Font-Size="10pt"/>
                    <asp:TreeNodeStyle ChildNodesPadding="10" 
                        Font-Size="8pt"/>
                         
                </LevelStyles>
                 
                <Nodes>
                
                    <asp:TreeNode Text="Table of Contents"
                        SelectAction="None">
                         
                        <asp:TreeNode Text="Chapter One">
                        
                            <asp:TreeNode Text="Section 1.0">
                            
                                <asp:TreeNode Text="Topic 1.0.1"/>
                                <asp:TreeNode Text="Topic 1.0.2"/>
                                <asp:TreeNode Text="Topic 1.0.3"/>
                            
                            </asp:TreeNode>
                            
                            <asp:TreeNode Text="Section 1.1">
                            
                                <asp:TreeNode Text="Topic 1.1.1"/>
                                <asp:TreeNode Text="Topic 1.1.2"/>
                                <asp:TreeNode Text="Topic 1.1.3"/>
                                <asp:TreeNode Text="Topic 1.1.4"/>
                            
                            </asp:TreeNode>
                        
                        </asp:TreeNode>
                        
                        <asp:TreeNode Text="Chapter Two">
                        
                            <asp:TreeNode Text="Section 2.0">
                            
                                <asp:TreeNode Text="Topic 2.0.1"/>
                                <asp:TreeNode Text="Topic 2.0.2"/>
                            
                            </asp:TreeNode>
                        
                        </asp:TreeNode>
                        
                    </asp:TreeNode>
                    <asp:TreeNode Text="Appendix A" />
                    <asp:TreeNode Text="Appendix B" />
                    <asp:TreeNode Text="Appendix C" />
                
                </Nodes>
                
            </asp:TreeView>
            
            <br /><br />
            
            <asp:Label id="Message" runat="server"/>
            
        </form>
    </body>
</html>


<%@ Page Language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

    Sub Select_Change(ByVal sender As Object, ByVal e As EventArgs)

        Message.Text = "You selected: " & LinksTreeView.SelectedNode.Text

    End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >

    <head runat="server">
    <title>TreeView SelectedNodeStyle Example</title>
</head>
<body>
        <form id="form1" runat="server">
        
            <h3>TreeView SelectedNodeStyle Example</h3>
            
            <asp:TreeView id="LinksTreeView"
                Font-Names= "Arial"
                ForeColor="Blue"
                SelectedNodeStyle-ForeColor="Green"
                SelectedNodeStyle-VerticalPadding="0"
                OnSelectedNodeChanged="Select_Change"   
                runat="server">
                 
                <LevelStyles>
                
                    <asp:TreeNodeStyle ChildNodesPadding="10" 
                        Font-Bold="true" 
                        Font-Size="12pt" 
                        ForeColor="DarkGreen"/>
                    <asp:TreeNodeStyle ChildNodesPadding="5" 
                        Font-Bold="true" 
                        Font-Size="10pt"/>
                    <asp:TreeNodeStyle ChildNodesPadding="5" 
                        Font-UnderLine="true" 
                        Font-Size="10pt"/>
                    <asp:TreeNodeStyle ChildNodesPadding="10" 
                        Font-Size="8pt"/>
                         
                </LevelStyles>
                 
                <Nodes>
                
                    <asp:TreeNode Text="Table of Contents"
                        SelectAction="None">
                         
                        <asp:TreeNode Text="Chapter One">
                        
                            <asp:TreeNode Text="Section 1.0">
                            
                                <asp:TreeNode Text="Topic 1.0.1"/>
                                <asp:TreeNode Text="Topic 1.0.2"/>
                                <asp:TreeNode Text="Topic 1.0.3"/>
                            
                            </asp:TreeNode>
                            
                            <asp:TreeNode Text="Section 1.1">
                            
                                <asp:TreeNode Text="Topic 1.1.1"/>
                                <asp:TreeNode Text="Topic 1.1.2"/>
                                <asp:TreeNode Text="Topic 1.1.3"/>
                                <asp:TreeNode Text="Topic 1.1.4"/>
                            
                            </asp:TreeNode>
                        
                        </asp:TreeNode>
                        
                        <asp:TreeNode Text="Chapter Two">
                        
                            <asp:TreeNode Text="Section 2.0">
                            
                                <asp:TreeNode Text="Topic 2.0.1"/>
                                <asp:TreeNode Text="Topic 2.0.2"/>
                            
                            </asp:TreeNode>
                        
                        </asp:TreeNode>
                        
                    </asp:TreeNode>
                    <asp:TreeNode Text="Appendix A" />
                    <asp:TreeNode Text="Appendix B" />
                    <asp:TreeNode Text="Appendix C" />
                
                </Nodes>
                
            </asp:TreeView>
            
            <br /><br />
            
            <asp:Label id="Message" runat="server"/>
            
        </form>
    </body>
</html>

Commenti

Utilizzare la SelectedNodeStyle proprietà per controllare l'aspetto del nodo selezionato TreeView nel controllo.Use the SelectedNodeStyle property to control the appearance of the selected node in the TreeView control. Questa proprietà è di sola lettura. Tuttavia, è possibile impostare le proprietà dell' TreeNodeStyle oggetto restituito.This property is read-only; however, you can set the properties of the TreeNodeStyle object it returns. Le proprietà possono essere impostate in modo dichiarativo Property-Subpropertynel formato Subproperty , dove TreeNodeStyle è una proprietà dell'oggetto (ad esempio SelectedNodeStyle-ForeColor,).The properties can be set declaratively in the form Property-Subproperty, where Subproperty is a property of the TreeNodeStyle object (for example, SelectedNodeStyle-ForeColor). Le proprietà possono essere impostate anche a livello di codice nel Property.Subproperty formato (ad esempio SelectedNodeStyle.ForeColor,).The properties can also be set programmatically in the form Property.Subproperty (for example, SelectedNodeStyle.ForeColor). Le impostazioni comuni includono in genere un colore di sfondo personalizzato, il colore di primo piano, le proprietà del carattere e la spaziatura dei nodiCommon settings usually include a custom background color, foreground color, font properties, and node spacing. Le proprietà di stile vengono applicate nel seguente ordine di precedenza:Style properties are applied in the following order of precedence:

  1. NodeStyle.NodeStyle.

  2. RootNodeStyle, ParentNodeStyle oLeafNodeStyle, a seconda del tipo di nodo.RootNodeStyle, ParentNodeStyle, or LeafNodeStyle, depending on the node type. Se la LevelStyles raccolta è definita, viene applicata in questo momento, sostituendo le altre proprietà dello stile del nodo.If the LevelStyles collection is defined, it is applied at this time, overriding the other node style properties.

  3. SelectedNodeStyle.SelectedNodeStyle.

  4. HoverNodeStyle.HoverNodeStyle.

Si applica a

Vedi anche