TreeNode.Parent Properti
Definisi
Penting
Beberapa informasi terkait produk prarilis yang dapat diubah secara signifikan sebelum dirilis. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.
Mendapatkan simpul induk dari simpul saat ini.
public:
property System::Web::UI::WebControls::TreeNode ^ Parent { System::Web::UI::WebControls::TreeNode ^ get(); };[System.ComponentModel.Browsable(false)]
public System.Web.UI.WebControls.TreeNode Parent { get; }[<System.ComponentModel.Browsable(false)>]
member this.Parent : System.Web.UI.WebControls.TreeNodePublic ReadOnly Property Parent As TreeNodeNilai Properti
TreeNode yang mewakili simpul induk dari simpul saat ini.
- Atribut
Contoh
Contoh kode berikut menunjukkan cara menggunakan Parent properti untuk mengakses Text properti simpul induk simpul saat ini.
<%@ 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 Selection_Changed(Object sender, EventArgs e)
{
// Display the selected node and its parent node.
Message.Text = "You selected " + LinksTreeView.SelectedNode.Text + ". ";
if(LinksTreeView.SelectedNode.Parent.Depth != -1)
{
Message.Text += "Its parent node is " + LinksTreeView.SelectedNode.Parent.Text + ".";
}
else
{
Message.Text += "This is a root node and does not have a parent node.";
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>TreeNode Parent Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>TreeNode Parent Example</h3>
<h5>Select a node from the TreeView control.</h5>
<asp:TreeView id="LinksTreeView"
Font-Names= "Arial"
ForeColor="Blue"
ExpandDepth="2"
OnSelectedNodeChanged="Selection_Changed"
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">
<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 Selection_Changed(ByVal sender As Object, ByVal e As EventArgs)
' Display the selected node and its parent node.
Message.Text = "You selected " & LinksTreeView.SelectedNode.Text & ". "
If LinksTreeView.SelectedNode.Parent.Depth <> -1 Then
Message.Text &= "Its parent node is " & LinksTreeView.SelectedNode.Parent.Text & "."
Else
Message.Text &= "This is a root node and does not have a parent node."
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>TreeNode Parent Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>TreeNode Parent Example</h3>
<h5>Select a node from the TreeView control.</h5>
<asp:TreeView id="LinksTreeView"
Font-Names= "Arial"
ForeColor="Blue"
ExpandDepth="2"
OnSelectedNodeChanged="Selection_Changed"
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">
<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>
Keterangan
Properti Parent mengembalikan TreeNode objek yang mewakili simpul induk dari simpul saat ini. Biasanya digunakan untuk menentukan simpul induk atau untuk mengakses properti simpul induk.
Nota
Simpul akar tidak memiliki simpul induk.
Untuk mengakses simpul anak dari simpul saat ini, gunakan ChildNodes properti .
