MenuItemStyleCollection.Add(MenuItemStyle) Metodo
Definizione
Importante
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Aggiunge l'oggetto MenuItemStyle specificato alla fine dell'insieme corrente.
public:
int Add(System::Web::UI::WebControls::MenuItemStyle ^ style);public int Add (System.Web.UI.WebControls.MenuItemStyle style);member this.Add : System.Web.UI.WebControls.MenuItemStyle -> intPublic Function Add (style As MenuItemStyle) As IntegerParametri
- style
- MenuItemStyle
Oggetto MenuItemStyle da aggiungere alla fine dell'insieme corrente.
Restituisce
Indice in base zero dell'oggetto MenuItemStyle aggiunto.
Esempio
Nell'esempio di codice seguente viene illustrato come usare la MenuItemStyleCollection classe per specificare le impostazioni di stile per le voci di menu in un Menu controllo in base al livello della voce di menu. In questo esempio la LevelMenuItemStyles proprietà viene creata in modo dichiarativo e viene rimosso un MenuItemStyle oggetto e un altro aggiunto all'oggetto MenuItemStyleCollection .
<%@ 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 Page_Load(Object sender, EventArgs e)
{
if (!IsPostBack)
{
// Use the Add and RemoveAt methods to programmatically
// remove the third level menu item style and replace
// it with a new style, in this case replacing the green background
// and yellow text with the blue background and white text.
MenuItemStyle newStyle = new MenuItemStyle();
newStyle.BackColor = System.Drawing.Color.Blue;
newStyle.ForeColor = System.Drawing.Color.White;
// Remove the last of the three menu item styles. Note that
// since the collection has a zero-based index, the third
// entry has an index value of 2.
MainMenuID.LevelMenuItemStyles.RemoveAt(2);
MainMenuID.LevelMenuItemStyles.Add(newStyle);
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>MenuItemStyleCollection Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>MenuItemStyleCollection Example</h3>
<!--Add MenuItemStyle objects to the MenuItemStyleCollection -->
<!--using LevelMenuItemStyles. -->
<!--Note that each menu item style represents a level in the menu -->
<asp:Menu id="MainMenuID"
Font-Names= "Arial"
ForeColor="Blue"
runat="server">
<LevelMenuItemStyles>
<asp:MenuItemStyle BackColor="Azure"
Font-Italic="true"
Font-Names="Arial"
ForeColor="Black" />
<asp:MenuItemStyle BackColor="Black"
Font-Italic="false"
Font-Names="Arial"
ForeColor="White" />
<asp:MenuItemStyle BackColor="Green"
Font-Italic="true"
Font-Names="Arial"
ForeColor="Yellow" />
</LevelMenuItemStyles>
<items>
<asp:menuitem text="Home"
tooltip="Home">
<asp:menuitem text="Music"
tooltip="Music">
<asp:menuitem text="Classical"
tooltip="Classical"/>
<asp:menuitem text="Rock"
tooltip="Rock"/>
<asp:menuitem text="Jazz"
tooltip="Jazz"/>
</asp:menuitem>
<asp:menuitem text="Movies"
tooltip="Movies">
<asp:menuitem text="Action"
tooltip="Action"/>
<asp:menuitem text="Drama"
tooltip="Drama"/>
<asp:menuitem text="Musical"
tooltip="Musical"/>
</asp:menuitem>
</asp:menuitem>
</items>
</asp:Menu>
</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 Page_Load(ByVal sender As [Object], ByVal e As EventArgs)
If Not IsPostBack Then
' Use the Add and RemoveAt methods to programmatically
' remove the third level menu item style and replace
' it with a new style, in this case replacing the green background
' and yellow text with the blue background and white text.
Dim newStyle As New MenuItemStyle()
newStyle.BackColor = System.Drawing.Color.Blue
newStyle.ForeColor = System.Drawing.Color.White
' Remove the last of the three menu item styles. Note that
' since the collection has a zero-based index, the third
' entry has an index value of 2.
MainMenuID.LevelMenuItemStyles.RemoveAt(2)
MainMenuID.LevelMenuItemStyles.Add(newStyle)
End If
End Sub 'Page_Load
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>MenuItemStyleCollection Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>MenuItemStyleCollection Example</h3>
<!--Add MenuItemStyle objects to the MenuItemStyleCollection -->
<!--using LevelMenuItemStyles. -->
<!--Note that each menu item style represents a level in the menu -->
<asp:Menu id="MainMenuID"
Font-Names= "Arial"
ForeColor="Blue"
runat="server">
<LevelMenuItemStyles>
<asp:MenuItemStyle BackColor="Azure"
Font-Italic="true"
Font-Names="Arial"
ForeColor="Black" />
<asp:MenuItemStyle BackColor="Black"
Font-Italic="false"
Font-Names="Arial"
ForeColor="White" />
<asp:MenuItemStyle BackColor="Green"
Font-Italic="true"
Font-Names="Arial"
ForeColor="Yellow" />
</LevelMenuItemStyles>
<items>
<asp:menuitem text="Home"
tooltip="Home">
<asp:menuitem text="Music"
tooltip="Music">
<asp:menuitem text="Classical"
tooltip="Classical"/>
<asp:menuitem text="Rock"
tooltip="Rock"/>
<asp:menuitem text="Jazz"
tooltip="Jazz"/>
</asp:menuitem>
<asp:menuitem text="Movies"
tooltip="Movies">
<asp:menuitem text="Action"
tooltip="Action"/>
<asp:menuitem text="Drama"
tooltip="Drama"/>
<asp:menuitem text="Musical"
tooltip="Musical"/>
</asp:menuitem>
</asp:menuitem>
</items>
</asp:Menu>
</form>
</body>
</html>
Commenti
Utilizzare il Add metodo per aggiungere l'oggetto specificato MenuItemStyle alla fine dell'insieme. In alternativa, è possibile inserire un MenuItemStyle oggetto nella raccolta in un indice specifico usando il Insert metodo .