TreeNodeStyle.CopyFrom(Style) Metodo
Definizione
Importante
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Copia le proprietà di stile dell'oggetto Style specificato nell'oggetto TreeNodeStyle corrente.
public:
override void CopyFrom(System::Web::UI::WebControls::Style ^ s);public override void CopyFrom (System.Web.UI.WebControls.Style s);override this.CopyFrom : System.Web.UI.WebControls.Style -> unitPublic Overrides Sub CopyFrom (s As Style)Parametri
Esempio
Nell'esempio di codice seguente viene illustrato come usare il CopyFrom metodo per copiare le proprietà di stile dell'oggetto specificato Style nell'oggetto TreeNodeStyle che chiama questo metodo. Si noti che ogni proprietà di stile viene sostituita.
<%@ 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 Button_Click(Object sender, EventArgs e)
{
// Copy the leaf node styles from the TreeNodeOne TreeView into the
// TreeViewResults TreeView.
TreeViewResults.LeafNodeStyle.CopyFrom(TreeViewOne.LeafNodeStyle);
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>TreeNodeStyle CopyFrom Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>TreeNodeStyle CopyFrom Example</h3>
<table cellspacing="30">
<tr>
<th>
TreeView One
</th>
<th>
TreeView Result
</th>
</tr>
<tr valign="top">
<td>
<!-- Set the styles for the leaf nodes declaratively. -->
<asp:TreeView id="TreeViewOne"
ExpandDepth="4"
LeafNodeStyle-BackColor="Yellow"
LeafNodeStyle-Font-Bold="true"
LeafNodeStyle-ForeColor="Black"
runat="server">
<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>
</asp:TreeNode>
</Nodes>
</asp:TreeView>
</td>
<td>
<!-- Set the styles for the leaf nodes declaratively. -->
<asp:TreeView id="TreeViewResults"
ExpandDepth="4"
runat="server">
<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>
</asp:TreeNode>
</Nodes>
</asp:TreeView>
</td>
</tr>
<tr>
<td>
<asp:Button ID="CopyNodeStyleButton"
Text="Copy LeafNodeStyle"
OnClick="Button_Click"
runat="server"/>
</td>
<td>
</td>
</tr>
</table>
</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 Button_Click(ByVal sender As Object, ByVal e As EventArgs)
' Copy the leaf node styles from the TreeNodeOne TreeView into the
' TreeViewResults TreeView.
TreeViewResults.LeafNodeStyle.CopyFrom(TreeViewOne.LeafNodeStyle)
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>TreeNodeStyle CopyFrom Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>TreeNodeStyle CopyFrom Example</h3>
<table cellspacing="30">
<tr>
<th>
TreeView One
</th>
<th>
TreeView Result
</th>
</tr>
<tr valign="top">
<td>
<!-- Set the styles for the leaf nodes declaratively. -->
<asp:TreeView id="TreeViewOne"
ExpandDepth="4"
LeafNodeStyle-BackColor="Yellow"
LeafNodeStyle-Font-Bold="true"
LeafNodeStyle-ForeColor="Black"
runat="server">
<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>
</asp:TreeNode>
</Nodes>
</asp:TreeView>
</td>
<td>
<!-- Set the styles for the leaf nodes declaratively. -->
<asp:TreeView id="TreeViewResults"
ExpandDepth="4"
runat="server">
<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>
</asp:TreeNode>
</Nodes>
</asp:TreeView>
</td>
</tr>
<tr>
<td>
<asp:Button ID="CopyNodeStyleButton"
Text="Copy LeafNodeStyle"
OnClick="Button_Click"
runat="server"/>
</td>
<td>
</td>
</tr>
</table>
</form>
</body>
</html>
Commenti
Utilizzare il CopyFrom metodo per duplicare le proprietà di stile dell'oggetto specificato Style nell'oggetto TreeNodeStyle che chiama questo metodo.
Nota
Tutte le proprietà nell'oggetto corrente TreeNodeStyle vengono sostituite dalle proprietà corrispondenti nell'oggetto specificato Style .
Per copiare le proprietà dello stile senza sostituire i valori già impostati, usare il MergeWith metodo .