Menu Konstruktor

  • Referenz

Definition

Namespace:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Initialisiert eine neue Instanz der Menu-Klasse.

public:
 Menu();
public Menu ();
Public Sub New ()

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie sie den Konstruktor zum dynamischen Hinzufügen eines Menu Steuerelements zu einer Seite verwenden.


<%@ 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)
  {
    
    // Create a new Menu control.
    Menu newMenu = new Menu();
          
    // Set the properties of the Menu control.
    newMenu.ID = "NavigationMenu";
    newMenu.DisappearAfter = 2000;
    newMenu.Orientation = Orientation.Vertical;
    newMenu.Target = "_blank";
    newMenu.StaticMenuItemStyle.ForeColor = System.Drawing.Color.Black;
    newMenu.DynamicMenuItemStyle.ForeColor = System.Drawing.Color.Gray;
    
    // Create the menu structure.
    
    // Create the root menu item.
    MenuItem homeMenuItem;
    homeMenuItem = CreateMenuItem("Home", "Home.aspx", "Home");
    
    // Create the submenu items.
    MenuItem musicSubMenuItem;
    musicSubMenuItem = CreateMenuItem("Music", "Music.aspx", "Music");
    
    MenuItem moviesSubMenuItem;
    moviesSubMenuItem = CreateMenuItem("Movies", "Movies.aspx", "Movies");
    
    // Add the submenu items to the ChildItems
    // collection of the root menu item.
    homeMenuItem.ChildItems.Add(musicSubMenuItem);
    homeMenuItem.ChildItems.Add(moviesSubMenuItem);
    
    // Add the root menu item to the ItemsCollection 
    // of the Menu control.
    newMenu.Items.Add(homeMenuItem);
    
    // Add the Menu control to the Controls collection
    // of the PlaceHolder control.
    MenuPlaceHolder.Controls.Add(newMenu);
    
  }
  
  MenuItem CreateMenuItem(String text, String url, String toolTip)
  {
    
    // Create a new MenuItem object.
    MenuItem menuItem = new MenuItem();
    
    // Set the properties of the MenuItem object using
    // the specified parameters.
    menuItem.Text = text;
    menuItem.NavigateUrl = url;
    menuItem.ToolTip = toolTip;
    
    return menuItem;
    
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>Menu Constructor Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>Menu Constructor Example</h3>
    
      <asp:placeholder id="MenuPlaceHolder"
        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 Page_Load(ByVal sender As Object, ByVal e As EventArgs)
    
    ' Create a new Menu control.
    Dim newMenu As New Menu()
          
    ' Set the properties of the Menu control.
    newMenu.ID = "NavigationMenu"
    newMenu.DisappearAfter = 2000
    newMenu.Orientation = Orientation.Vertical
    newMenu.Target = "_blank"
    newMenu.StaticMenuItemStyle.ForeColor = System.Drawing.Color.Black
    newMenu.DynamicMenuItemStyle.ForeColor = System.Drawing.Color.Gray
    
    ' Create the menu structure.
    
    ' Create the root menu item.
    Dim homeMenuItem As MenuItem
    homeMenuItem = CreateMenuItem("Home", "Home.aspx", "Home")
    
    ' Create the submenu items.
    Dim musicSubMenuItem As MenuItem
    musicSubMenuItem = CreateMenuItem("Music", "Music.aspx", "Music")
    
    Dim moviesSubMenuItem As MenuItem
    moviesSubMenuItem = CreateMenuItem("Movies", "Movies.aspx", "Movies")
    
    ' Add the submenu items to the ChildItems
    ' collection of the root menu item.
    homeMenuItem.ChildItems.Add(musicSubMenuItem)
    homeMenuItem.ChildItems.Add(moviesSubMenuItem)
    
    ' Add the root menu item to the ItemsCollection 
    ' of the Menu control.
    newMenu.Items.Add(homeMenuItem)
    
    ' Add the Menu control to the Controls collection
    ' of the PlaceHolder control.
    MenuPlaceHolder.Controls.Add(newMenu)
    
  End Sub
  
  Function CreateMenuItem(ByVal text As String, ByVal url As String, ByVal toolTip As String) As MenuItem
    
    ' Create a new MenuItem object.
    Dim menuItem As New MenuItem()
    
    ' Set the properties of the MenuItem object using
    ' the specified parameters.
    menuItem.Text = text
    menuItem.NavigateUrl = url
    menuItem.ToolTip = toolTip
    
    Return menuItem
    
  End Function

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>Menu Constructor Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>Menu Constructor Example</h3>
    
      <asp:placeholder id="MenuPlaceHolder"
        runat="server"/>

    </form>
  </body>
</html>

Hinweise

Verwenden Sie diesen Konstruktor, um eine neue Instanz der Menu Klasse zu erstellen und zu initialisieren. Zum dynamischen Hinzufügen eines Steuerelements zu einer Seite erstellen Sie ein Menu neues Menu Objekt, legen Sie seine Eigenschaften fest, und fügen Sie es dann der Controls Auflistung eines Containersteuerelements hinzu, z PlaceHolder. B. .

Gilt für

Siehe auch