SiteMapPath Constructor

  • Referencia

Definición

Espacio de nombres:
System.Web.UI.WebControls
Ensamblado:
System.Web.dll

Inicializa una nueva instancia de la clase SiteMapPath.

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

Ejemplos

En el ejemplo de código siguiente se muestra cómo usar el SiteMapPath constructor para agregar un SiteMapPath control a una página. Para que el ejemplo funcione, debe agregar una imagen al directorio raíz y cambiar el nombre de la imagen en el código de ejemplo de "myimage.jpg" al nombre del archivo de imagen.

<%@ 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">
    private void Page_Load(object sender, System.EventArgs e)
    {
        // Create the SiteMapPath control.
        SiteMapPath navpath = new SiteMapPath();

        // Make the root node look unique.
        // The Image that you can use in your Web page is an
        // instance of the WebControls.Image class, not the
        // Drawing.Image class.
        System.Web.UI.WebControls.Image rootNodeImage =
            new System.Web.UI.WebControls.Image();
        rootNodeImage.ImageUrl = "myimage.jpg";
        ImageTemplate rootNodeImageTemplate = new ImageTemplate();
        rootNodeImageTemplate.MyImage = rootNodeImage;
        navpath.RootNodeTemplate = rootNodeImageTemplate;

        // Make the current node look unique.
        Style currentNodeStyle = new Style();
        navpath.CurrentNodeStyle.ForeColor = System.Drawing.Color.AliceBlue;
        navpath.CurrentNodeStyle.BackColor = System.Drawing.Color.Bisque;

        // Set the path separator to be something other
        // than the default.
        navpath.PathSeparator = "::";

        PlaceHolder1.Controls.Add(navpath);
    }


    // A simple Template class to wrap an image.
    public class ImageTemplate : ITemplate
    {
        private System.Web.UI.WebControls.Image myImage;
        public System.Web.UI.WebControls.Image MyImage
        {
            get
            {
                return myImage;
            }
            set
            {
                myImage = value;
            }
        }
        public void InstantiateIn(Control container)
        {
            container.Controls.Add(MyImage);
        }
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>About Our Company</title>
</head>
<body>
    <form id="Form1" method="post" runat="server">

      <asp:PlaceHolder id="PlaceHolder1" runat="server"></asp:PlaceHolder>

      <h1>About Our Company</h1>

      <p>Our company was founded in 1886.</p>

      <p>We use only the finest ingredients, organically grown fruits, and
      natural spices in our homemade pies. We use no artificial preservatives
      or coloring agents. We would not have it any other way!</p>

    </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">

    Private Sub Page_Load(sender As Object, e As EventArgs)
        ' Create the SiteMapPath control.
        Dim navpath As New SiteMapPath()

        ' Make the root node look unique.
        ' The Image that you can use in your Web page is an
        ' instance of the WebControls.Image class, not the
        ' Drawing.Image class.
        Dim rootNodeImage As New System.Web.UI.WebControls.Image()
        rootNodeImage.ImageUrl = "myimage.jpg"
        Dim rootNodeImageTemplate As New ImageTemplate()
        rootNodeImageTemplate.MyImage = rootNodeImage
        navpath.RootNodeTemplate = rootNodeImageTemplate

        ' Make the current node look unique.
        Dim currentNodeStyle As New Style()
        navpath.CurrentNodeStyle.ForeColor = System.Drawing.Color.AliceBlue
        navpath.CurrentNodeStyle.BackColor = System.Drawing.Color.Bisque

        ' Set the path separator to be something other
        ' than the default.
        navpath.PathSeparator = "::"

        PlaceHolder1.Controls.Add(navpath)
    End Sub ' Page_Load


    ' A simple Template class to wrap an image.
    Public Class ImageTemplate
      Implements ITemplate

        Private anImage As System.Web.UI.WebControls.Image
        Public Property MyImage As System.Web.UI.WebControls.Image
          Get
            return anImage
          End Get
          Set
            anImage = value
          End Set
        End Property ' MyImage

        Public Overridable Sub InstantiateIn(ByVal container As Control) Implements ITemplate.InstantiateIn
            container.Controls.Add(MyImage)
        End Sub ' InstantiateIn

    End Class ' ImageTemplate
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>About Our Company</title>
</head>
<body>
    <form id="Form1" method="post" runat="server">

      <asp:PlaceHolder id="PlaceHolder1" runat="server"></asp:PlaceHolder>

      <h1>About Our Company</h1>

      <p>Our company was founded in 1886.</p>

      <p>We use only the finest ingredients, organically grown fruits, and
      natural spices in our homemade pies. We use no artificial preservatives
      or coloring agents. We would not have it any other way!</p>

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

Comentarios

Use este constructor para crear e inicializar una nueva instancia de la SiteMapPath clase . Para agregar dinámicamente un SiteMapPath control a una página, cree un nuevo SiteMapPath objeto, establezca sus propiedades y, a continuación, agréguelo a la Control.Controls colección de un control de contenedor, como PlaceHolder.

Se aplica a

Consulte también