LinkLabel.Link Clase

Definición

Representa un vínculo en un control LinkLabel.Represents a link within a LinkLabel control.

public: ref class LinkLabel::Link
[System.ComponentModel.TypeConverter(typeof(System.Windows.Forms.LinkConverter))]
public class LinkLabel.Link
public class LinkLabel.Link
[<System.ComponentModel.TypeConverter(typeof(System.Windows.Forms.LinkConverter))>]
type LinkLabel.Link = class
type LinkLabel.Link = class
Public Class LinkLabel.Link
Herencia
LinkLabel.Link
Atributos

Ejemplos

En el ejemplo siguiente se muestra cómo usar la LinkLabel clase, con varias LinkArea secciones definidas, para mostrar una etiqueta en un formulario.The following example demonstrates using the LinkLabel class, with multiple LinkArea sections defined, to display a label on a form. En el ejemplo se muestra cómo establecer las AutoSize LinkBehavior propiedades,, DisabledLinkColor , LinkColor y VisitedLinkColor para personalizar la apariencia de LinkLabel .The example demonstrates setting the AutoSize, LinkBehavior, DisabledLinkColor, LinkColor, and VisitedLinkColor properties to customize the look of the LinkLabel. La primera LinkArea se especifica mediante la LinkLabel.LinkArea propiedad.The first LinkArea is specified using the LinkLabel.LinkArea property. Los vínculos adicionales se agregan a LinkLabel mediante el LinkLabel.LinkCollection.Add método.Additional links are added to the LinkLabel using the LinkLabel.LinkCollection.Add method. El ejemplo controla el LinkClicked evento iniciando el explorador Web para los hipervínculos y mostrando un MessageBox para otros vínculos.The example handles the LinkClicked event by starting the Web browser for hyperlinks, and displaying a MessageBox for other links.

#using <System.dll>
#using <System.Windows.Forms.dll>
#using <System.Drawing.dll>

using namespace System;
using namespace System::Drawing;
using namespace System::Windows::Forms;
public ref class Form1: public System::Windows::Forms::Form
{
private:
   System::Windows::Forms::LinkLabel^ linkLabel1;

public:
   Form1()
   {
      
      // Create the LinkLabel.
      this->linkLabel1 = gcnew System::Windows::Forms::LinkLabel;
      
      // Configure the LinkLabel's size and location. Specify that the
      // size should be automatically determined by the content.
      this->linkLabel1->Location = System::Drawing::Point( 34, 56 );
      this->linkLabel1->Size = System::Drawing::Size( 224, 16 );
      this->linkLabel1->AutoSize = true;
      
      // Configure the appearance.
      this->linkLabel1->DisabledLinkColor = System::Drawing::Color::Red;
      this->linkLabel1->VisitedLinkColor = System::Drawing::Color::Blue;
      this->linkLabel1->LinkBehavior = System::Windows::Forms::LinkBehavior::HoverUnderline;
      this->linkLabel1->LinkColor = System::Drawing::Color::Navy;
      this->linkLabel1->TabIndex = 0;
      this->linkLabel1->TabStop = true;
      
      // Add an event handler to do something when the links are clicked.
      this->linkLabel1->LinkClicked += gcnew System::Windows::Forms::LinkLabelLinkClickedEventHandler( this, &Form1::linkLabel1_LinkClicked );
      
      // Identify what the first Link is.
      this->linkLabel1->LinkArea = System::Windows::Forms::LinkArea( 0, 8 );
      
      // Identify that the first link is visited already.
      this->linkLabel1->Links[ 0 ]->Visited = true;
      
      // Set the Text property to a String*.
      this->linkLabel1->Text = "Register Online.  Visit Microsoft.  Visit MSN.";
      
      // Create new links using the Add method of the LinkCollection class.
      // Underline the appropriate words in the LinkLabel's Text property.
      // The words 'Register', 'Microsoft', and 'MSN' will
      // all be underlined and behave as hyperlinks.
      // First check that the Text property is long enough to accommodate
      // the desired hyperlinked areas.  If it's not, don't add hyperlinks.
      if ( this->linkLabel1->Text->Length >= 45 )
      {
         this->linkLabel1->Links[ 0 ]->LinkData = "Register";
         this->linkLabel1->Links->Add( 24, 9, "www.microsoft.com" );
         this->linkLabel1->Links->Add( 42, 3, "www.msn.com" );
         this->linkLabel1->Links[ 1 ]->Enabled = false;
      }

      
      // Set up how the form should be displayed and add the controls to the form.
      this->ClientSize = System::Drawing::Size( 292, 266 );
      array<System::Windows::Forms::Control^>^temp0 = {this->linkLabel1};
      this->Controls->AddRange( temp0 );
      this->Text = "Link Label Example";
   }


private:
   void linkLabel1_LinkClicked( Object^ /*sender*/, System::Windows::Forms::LinkLabelLinkClickedEventArgs^ e )
   {
      // Determine which link was clicked within the LinkLabel.
      this->linkLabel1->Links[ linkLabel1->Links->IndexOf( e->Link ) ]->Visited = true;
      
      // Display the appropriate link based on the value of the
      // LinkData property of the Link Object*.
      String^ target = dynamic_cast<String^>(e->Link->LinkData);
      
      // If the value looks like a URL, navigate to it.
      // Otherwise, display it in a message box.
      if ( nullptr != target && target->StartsWith( "www" ) )
      {
         System::Diagnostics::Process::Start( target );
      }
      else
      {
         MessageBox::Show( "Item clicked: {0}", target );
      }
   }
};

[STAThread]
int main()
{
   Application::Run( gcnew Form1 );
}
using System;
using System.Drawing;
using System.Windows.Forms;

public class Form1 : System.Windows.Forms.Form
{
    private System.Windows.Forms.LinkLabel linkLabel1;
    
    [STAThread]
    static void Main() 
    {
        Application.Run(new Form1());
    }

    public Form1()
    {
        // Create the LinkLabel.
        this.linkLabel1 = new System.Windows.Forms.LinkLabel();

        // Configure the LinkLabel's size and location. Specify that the
        // size should be automatically determined by the content.
        this.linkLabel1.Location = new System.Drawing.Point(34, 56);
        this.linkLabel1.Size = new System.Drawing.Size(224, 16);
        this.linkLabel1.AutoSize = true;

        // Configure the appearance. 
        // Set the DisabledLinkColor so that a disabled link will show up against the form's background.
        this.linkLabel1.DisabledLinkColor = System.Drawing.Color.Red;
        this.linkLabel1.VisitedLinkColor = System.Drawing.Color.Blue;
        this.linkLabel1.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline;
        this.linkLabel1.LinkColor = System.Drawing.Color.Navy;
        
        this.linkLabel1.TabIndex = 0;
        this.linkLabel1.TabStop = true;

        // Add an event handler to do something when the links are clicked.
        this.linkLabel1.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.linkLabel1_LinkClicked);

        // Identify what the first Link is.
        this.linkLabel1.LinkArea = new System.Windows.Forms.LinkArea(0, 8);

        // Identify that the first link is visited already.
        this.linkLabel1.Links[0].Visited = true;
        
        // Set the Text property to a string.
        this.linkLabel1.Text = "Register Online.  Visit Microsoft.  Visit MSN.";

        // Create new links using the Add method of the LinkCollection class.
        // Underline the appropriate words in the LinkLabel's Text property.
        // The words 'Register', 'Microsoft', and 'MSN' will 
        // all be underlined and behave as hyperlinks.

        // First check that the Text property is long enough to accommodate
        // the desired hyperlinked areas.  If it's not, don't add hyperlinks.
        if(this.linkLabel1.Text.Length >= 45)
        {
            this.linkLabel1.Links[0].LinkData = "Register";
            this.linkLabel1.Links.Add(24, 9, "www.microsoft.com");
            this.linkLabel1.Links.Add(42, 3, "www.msn.com");
        //  The second link is disabled and will appear as red.
            this.linkLabel1.Links[1].Enabled = false;
        }
        
        // Set up how the form should be displayed and add the controls to the form.
        this.ClientSize = new System.Drawing.Size(292, 266);
        this.Controls.AddRange(new System.Windows.Forms.Control[] {this.linkLabel1});
        this.Text = "Link Label Example";
    }

    private void linkLabel1_LinkClicked(object sender, System.Windows.Forms.LinkLabelLinkClickedEventArgs e)
    {
        // Determine which link was clicked within the LinkLabel.
        this.linkLabel1.Links[linkLabel1.Links.IndexOf(e.Link)].Visited = true;

        // Display the appropriate link based on the value of the 
        // LinkData property of the Link object.
        string target = e.Link.LinkData as string;

        // If the value looks like a URL, navigate to it.
        // Otherwise, display it in a message box.
        if(null != target && target.StartsWith("www"))
        {
            System.Diagnostics.Process.Start(target);
        }
        else
        {    
            MessageBox.Show("Item clicked: " + target);
        }
    }
}
Imports System.Drawing
Imports System.Windows.Forms

Public NotInheritable Class Form1
    Inherits System.Windows.Forms.Form

    Friend WithEvents LinkLabel1 As System.Windows.Forms.LinkLabel

    <System.STAThread()> _
    Public Shared Sub Main()
        System.Windows.Forms.Application.Run(New Form1)
    End Sub

    Public Sub New()
        MyBase.New()


        Me.LinkLabel1 = New System.Windows.Forms.LinkLabel

        ' Configure the LinkLabel's size and location. Specify that the
        ' size should be automatically determined by the content.
        Me.linkLabel1.Location = New System.Drawing.Point(34, 56) 
        Me.linkLabel1.Size = New System.Drawing.Size(224, 16) 
        Me.linkLabel1.AutoSize = True 

        ' Configure the appearance.
        ' Set the DisabledLinkColor so that a disabled link will show up against the form's background.
        Me.linkLabel1.DisabledLinkColor = System.Drawing.Color.Red 
        Me.linkLabel1.VisitedLinkColor = System.Drawing.Color.Blue 
        Me.linkLabel1.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline 
        Me.linkLabel1.LinkColor = System.Drawing.Color.Navy 
        
        Me.linkLabel1.TabIndex = 0 
        Me.linkLabel1.TabStop = True 
        
        ' Identify what the first Link is.
        Me.linkLabel1.LinkArea = New System.Windows.Forms.LinkArea(0, 8)

        ' Identify that the first link is visited already.
        Me.linkLabel1.Links(0).Visited = true
        
        ' Set the Text property to a string.
        Me.linkLabel1.Text = "Register Online.  Visit Microsoft.  Visit MSN."

        ' Create new links using the Add method of the LinkCollection class.
        ' Underline the appropriate words in the LinkLabel's Text property.
        ' The words 'Register', 'Microsoft', and 'MSN' will 
        ' all be underlined and behave as hyperlinks.

        ' First check that the Text property is long enough to accommodate
        ' the desired hyperlinked areas.  If it's not, don't add hyperlinks.
        If Me.LinkLabel1.Text.Length >= 45 Then
            Me.LinkLabel1.Links(0).LinkData = "Register"
            Me.LinkLabel1.Links.Add(24, 9, "www.microsoft.com")
            Me.LinkLabel1.Links.Add(42, 3, "www.msn.com")
            ' The second link is disabled and will appear as red.
            Me.linkLabel1.Links(1).Enabled = False
        End If

        ' Set up how the form should be displayed and adds the controls to the form.
        Me.ClientSize = New System.Drawing.Size(292, 266)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.LinkLabel1})
        Me.Text = "Link Label Example"
    End Sub

    Private Sub linkLabel1_LinkClicked(ByVal sender As Object, _
                ByVal e As System.Windows.Forms.LinkLabelLinkClickedEventArgs) Handles LinkLabel1.LinkClicked

        ' Determine which link was clicked within the LinkLabel.
        Me.LinkLabel1.Links(LinkLabel1.Links.IndexOf(e.Link)).Visited = True

        ' Displays the appropriate link based on the value of the LinkData property of the Link object.
        Dim target As String = CType(e.Link.LinkData, String)

        ' If the value looks like a URL, navigate to it.
        ' Otherwise, display it in a message box.
        If (target IsNot Nothing) AndAlso (target.StartsWith("www")) Then
            System.Diagnostics.Process.Start(target)
        Else
            MessageBox.Show(("Item clicked: " + target))
        End If

    End Sub

End Class

Comentarios

La LinkLabel.Link clase define las propiedades de un vínculo dentro de un LinkLabel control.The LinkLabel.Link class defines the properties of a link within a LinkLabel control. Puede utilizar estas propiedades para proporcionar datos al LinkClicked evento del LinkLabel control para realizar tareas cuando se hace clic en el vínculo en el control.You can use these properties to provide data to the LinkClicked event of the LinkLabel control to perform tasks when the link is clicked in the control. La LinkData propiedad permite definir la información que el LinkClicked evento puede usar para mostrar una dirección URL en Microsoft Internet Explorer o para abrir un archivo.The LinkData property enables you to define information that the LinkClicked event can use to display a URL within Microsoft Internet Explorer or to open a file.

Además de la información relacionada con el vínculo, las propiedades de la LinkLabel.Link clase también ayudan a definir el texto de LinkLabel.Link y su estado de visualización.In addition to information related to the link, the properties of the LinkLabel.Link class also help define the text of the LinkLabel.Link and its display state. Las Start Length propiedades y definen la ubicación y la longitud del texto del texto del LinkLabel control que se va a mostrar como un vínculo.The Start and Length properties define the location and length of text from the text of the LinkLabel control to display as a link. La Enabled propiedad permite mostrar el vínculo como un vínculo deshabilitado y la Visited propiedad puede avisar al usuario de que ya ha visitado el vínculo especificado en la instancia actual de LinkLabel .The Enabled property allows you to display the link as a disabled link, and the Visited property can alert the user that they already visited the specified link in the current instance of the LinkLabel.

Puede mostrar varios vínculos en un solo LinkLabel control.You can display multiple links in a single LinkLabel control. Cada LinkLabel.Link se agrega en el LinkLabel.LinkCollection asociado al LinkLabel control.Each LinkLabel.Link is added into the LinkLabel.LinkCollection associated with the LinkLabel control. Para obtener la colección de vínculos definida en un LinkLabel control, use la LinkLabel.Links propiedad.To obtain the collection of links defined in a LinkLabel control, use the LinkLabel.Links property.

Constructores

LinkLabel.Link()

Inicializa una nueva instancia de la clase LinkLabel.Link.Initializes a new instance of the LinkLabel.Link class.

LinkLabel.Link(Int32, Int32)

Inicializa una nueva instancia de la clase LinkLabel.Link con la posición inicial y el número de caracteres especificados después de la posición inicial dentro de LinkLabel.Initializes a new instance of the LinkLabel.Link class with the specified starting location and number of characters after the starting location within the LinkLabel.

LinkLabel.Link(Int32, Int32, Object)

Inicializa una nueva instancia de la clase LinkLabel.Link con la posición inicial y el número de caracteres especificados después de la posición inicial dentro de LinkLabel, y los datos asociados con el vínculo.Initializes a new instance of the LinkLabel.Link class with the specified starting location, number of characters after the starting location within the LinkLabel, and the data associated with the link.

Propiedades

Description

Obtiene o establece una descripción textual del vínculo.Gets or sets a text description of the link.

Enabled

Obtiene o establece un valor que indica si está habilitado el vínculo.Gets or sets a value indicating whether the link is enabled.

Length

Obtiene o establece el número de caracteres en el texto del vínculo.Gets or sets the number of characters in the link text.

LinkData

Obtiene o establece los datos asociados al vínculo.Gets or sets the data associated with the link.

Name

Obtiene o establece el nombre de LinkLabel.Link.Gets or sets the name of the LinkLabel.Link.

Start

Obtiene o establece la ubicación inicial del vínculo en el texto del control LinkLabel.Gets or sets the starting location of the link within the text of the LinkLabel.

Tag

Obtiene o establece el objeto que contiene datos sobre el LinkLabel.Link.Gets or sets the object that contains data about the LinkLabel.Link.

Visited

Obtiene o establece un valor que indica si el usuario ha visitado el vínculo.Gets or sets a value indicating whether the user has visited the link.

Métodos

Equals(Object)

Determina si el objeto especificado es igual que el objeto actual.Determines whether the specified object is equal to the current object.

(Heredado de Object)
GetHashCode()

Sirve como la función hash predeterminada.Serves as the default hash function.

(Heredado de Object)
GetType()

Obtiene el Type de la instancia actual.Gets the Type of the current instance.

(Heredado de Object)
MemberwiseClone()

Crea una copia superficial del Object actual.Creates a shallow copy of the current Object.

(Heredado de Object)
ToString()

Devuelve una cadena que representa el objeto actual.Returns a string that represents the current object.

(Heredado de Object)

Se aplica a

Consulte también