TreeNodeStyle.HorizontalPadding Proprietà
Definizione
Importante
Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.
Ottiene o imposta la quantità di spazio a sinistra e a destra del testo nel nodo.
public:
property System::Web::UI::WebControls::Unit HorizontalPadding { System::Web::UI::WebControls::Unit get(); void set(System::Web::UI::WebControls::Unit value); };public System.Web.UI.WebControls.Unit HorizontalPadding { get; set; }member this.HorizontalPadding : System.Web.UI.WebControls.Unit with get, setPublic Property HorizontalPadding As UnitValore della proprietà
Quantità di spazio in pixel a sinistra e a destra del testo del nodo. Il valore predefinito è 0 pixel.
Eccezioni
Il valore selezionato è di tipo Percentage o è minore di 0.
Esempio
Nell'esempio di codice seguente viene illustrato come usare la HorizontalPadding proprietà per controllare lo spazio orizzontale intorno al testo di un nodo.
<%@ 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 HorizontalPadding_Changed(Object sender, EventArgs e)
{
// Programmatically set the HorizontalPadding property based on the
// user's selection.
ItemsTreeView.ParentNodeStyle.HorizontalPadding = Convert.ToInt32(HorizontalPaddingList.SelectedItem.Text);
}
void VerticalPadding_Changed(Object sender, EventArgs e)
{
// Programmatically set the VerticalPadding property based on the
// user's selection.
ItemsTreeView.ParentNodeStyle.VerticalPadding = Convert.ToInt32(VerticalPaddingList.SelectedItem.Text);
}
void NodeSpacing_Changed(Object sender, EventArgs e)
{
// Programmatically set the NodeSpacing property based on the
// user's selection.
ItemsTreeView.ParentNodeStyle.NodeSpacing = Convert.ToInt32(NodeSpacingList.SelectedItem.Text);
}
void ChildNodePadding_Changed(Object sender, EventArgs e)
{
// Programmatically set the ChildNodesPadding property based on the
// user's selection.
ItemsTreeView.ParentNodeStyle.ChildNodesPadding = Convert.ToInt32(ChildNodesPaddingList.SelectedItem.Text);
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>TreeNodeStyle Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>TreeNodeStyle Example</h3>
<!-- Set the styles for the leaf nodes declaratively. -->
<asp:TreeView id="ItemsTreeView"
Font-Names= "Arial"
ForeColor="Blue"
ParentNodeStyle-ForeColor="Green"
ParentNodeStyle-HorizontalPadding="5"
ParentNodeStyle-VerticalPadding="5"
ParentNodeStyle-NodeSpacing="5"
ParentNodeStyle-ChildNodesPadding="5"
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 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>
</Nodes>
</asp:TreeView>
<hr />
<h5>Select the style settings for the parent nodes.</h5>
<table cellpadding="5">
<tr align="right">
<td>
Horizontal Padding:
<asp:DropDownList id="HorizontalPaddingList"
AutoPostBack="true"
OnSelectedIndexChanged="HorizontalPadding_Changed"
runat="server">
<asp:ListItem>0</asp:ListItem>
<asp:ListItem Selected="true">5</asp:ListItem>
<asp:ListItem>10</asp:ListItem>
</asp:DropDownList>
</td>
<td>
Vertical Padding:
<asp:DropDownList id="VerticalPaddingList"
AutoPostBack="true"
OnSelectedIndexChanged="VerticalPadding_Changed"
runat="server">
<asp:ListItem>0</asp:ListItem>
<asp:ListItem Selected="true">5</asp:ListItem>
<asp:ListItem>10</asp:ListItem>
</asp:DropDownList>
</td>
</tr>
<tr align="right">
<td>
Node Spacing:
<asp:DropDownList id="NodeSpacingList"
AutoPostBack="true"
OnSelectedIndexChanged="NodeSpacing_Changed"
runat="server">
<asp:ListItem>0</asp:ListItem>
<asp:ListItem Selected="true">5</asp:ListItem>
<asp:ListItem>10</asp:ListItem>
</asp:DropDownList>
</td>
<td>
Child Nodes Padding:
<asp:DropDownList id="ChildNodesPaddingList"
AutoPostBack="true"
OnSelectedIndexChanged="ChildNodePadding_Changed"
runat="server">
<asp:ListItem>0</asp:ListItem>
<asp:ListItem Selected="true">5</asp:ListItem>
<asp:ListItem>10</asp:ListItem>
</asp:DropDownList>
</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 HorizontalPadding_Changed(ByVal sender As Object, ByVal e As EventArgs)
' Programmatically set the HorizontalPadding property based on the
' user's selection.
ItemsTreeView.ParentNodeStyle.HorizontalPadding = Convert.ToInt32(HorizontalPaddingList.SelectedItem.Text)
End Sub
Sub VerticalPadding_Changed(ByVal sender As Object, ByVal e As EventArgs)
' Programmatically set the VerticalPadding property based on the
' user's selection.
ItemsTreeView.ParentNodeStyle.VerticalPadding = Convert.ToInt32(VerticalPaddingList.SelectedItem.Text)
End Sub
Sub NodeSpacing_Changed(ByVal sender As Object, ByVal e As EventArgs)
' Programmatically set the NodeSpacing property based on the
' user's selection.
ItemsTreeView.ParentNodeStyle.NodeSpacing = Convert.ToInt32(NodeSpacingList.SelectedItem.Text)
End Sub
Sub ChildNodePadding_Changed(ByVal sender As Object, ByVal e As EventArgs)
' Programmatically set the ChildNodesPadding property based on the
' user's selection.
ItemsTreeView.ParentNodeStyle.ChildNodesPadding = Convert.ToInt32(ChildNodesPaddingList.SelectedItem.Text)
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>TreeNodeStyle Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>TreeNodeStyle Example</h3>
<!-- Set the styles for the leaf nodes declaratively. -->
<asp:TreeView id="ItemsTreeView"
Font-Names= "Arial"
ForeColor="Blue"
ParentNodeStyle-ForeColor="Green"
ParentNodeStyle-HorizontalPadding="5"
ParentNodeStyle-VerticalPadding="5"
ParentNodeStyle-NodeSpacing="5"
ParentNodeStyle-ChildNodesPadding="5"
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 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>
</Nodes>
</asp:TreeView>
<hr />
<h5>Select the style settings for the parent nodes.</h5>
<table cellpadding="5">
<tr align="right">
<td>
Horizontal Padding:
<asp:DropDownList id="HorizontalPaddingList"
AutoPostBack="true"
OnSelectedIndexChanged="HorizontalPadding_Changed"
runat="server">
<asp:ListItem>0</asp:ListItem>
<asp:ListItem Selected="true">5</asp:ListItem>
<asp:ListItem>10</asp:ListItem>
</asp:DropDownList>
</td>
<td>
Vertical Padding:
<asp:DropDownList id="VerticalPaddingList"
AutoPostBack="true"
OnSelectedIndexChanged="VerticalPadding_Changed"
runat="server">
<asp:ListItem>0</asp:ListItem>
<asp:ListItem Selected="true">5</asp:ListItem>
<asp:ListItem>10</asp:ListItem>
</asp:DropDownList>
</td>
</tr>
<tr align="right">
<td>
Node Spacing:
<asp:DropDownList id="NodeSpacingList"
AutoPostBack="true"
OnSelectedIndexChanged="NodeSpacing_Changed"
runat="server">
<asp:ListItem>0</asp:ListItem>
<asp:ListItem Selected="true">5</asp:ListItem>
<asp:ListItem>10</asp:ListItem>
</asp:DropDownList>
</td>
<td>
Child Nodes Padding:
<asp:DropDownList id="ChildNodesPaddingList"
AutoPostBack="true"
OnSelectedIndexChanged="ChildNodePadding_Changed"
runat="server">
<asp:ListItem>0</asp:ListItem>
<asp:ListItem Selected="true">5</asp:ListItem>
<asp:ListItem>10</asp:ListItem>
</asp:DropDownList>
</td>
</tr>
</table>
</form>
</body>
</html>
Commenti
Utilizzare la HorizontalPadding proprietà per controllare la quantità di spazio orizzontale intorno al testo del nodo a cui viene applicato.TreeNodeStyle Questo spazio viene inserito tra il bordo sinistro del testo e il bordo dell'area di testo, nonché tra il bordo destro del testo e il bordo per il testo. Per controllare la spaziatura verticale, usare la VerticalPadding proprietà .
Il valore di questa proprietà viene archiviato nello stato di visualizzazione.