ClientScriptManager.GetPostBackClientHyperlink Método

Definición

Obtiene una referencia, con javascript: anexado al principio, que se puede utilizar en un evento de devolución de datos del cliente al servidor.Gets a reference, with javascript: appended to the beginning of it, that can be used in a client event to post back to the server.

Sobrecargas

GetPostBackClientHyperlink(Control, String)

Obtiene una referencia, con javascript: anexado al principio, que se puede utilizar en un evento de devolución de datos del cliente al servidor para el control especificado y con los argumentos de evento especificados.Gets a reference, with javascript: appended to the beginning of it, that can be used in a client event to post back to the server for the specified control and with the specified event arguments.

GetPostBackClientHyperlink(Control, String, Boolean)

Obtiene una referencia, con javascript: anexado al principio, que se puede utilizar en un evento de devolución de datos del cliente al servidor para el control especificado y con los argumentos de evento especificados y, también, con una indicación booleana de si se debe registrar la devolución de datos para realizar la validación del evento.Gets a reference, with javascript: appended to the beginning of it, that can be used in a client event to post back to the server for the specified control with the specified event arguments and Boolean indication whether to register the post back for event validation.

Obtiene una referencia, con javascript: anexado al principio, que se puede utilizar en un evento de devolución de datos del cliente al servidor para el control especificado y con los argumentos de evento especificados.Gets a reference, with javascript: appended to the beginning of it, that can be used in a client event to post back to the server for the specified control and with the specified event arguments.

public:
 System::String ^ GetPostBackClientHyperlink(System::Web::UI::Control ^ control, System::String ^ argument);
public string GetPostBackClientHyperlink (System.Web.UI.Control control, string argument);
member this.GetPostBackClientHyperlink : System.Web.UI.Control * string -> string

Parámetros

control
Control

Control de servidor que va a procesar el valor devuelto.The server control to process the postback.

argument
String

Parámetro pasado al control de servidor.The parameter passed to the server control.

Devoluciones

Cadena que representa una llamada de JavaScript a la función de postback que incluye el id. del control de destino y los argumentos del evento.A string representing a JavaScript call to the postback function that includes the target control's ID and event arguments.

Ejemplos

En el ejemplo de código siguiente se muestra el GetPostBackClientHyperlink uso del método.The following code example demonstrates the use of the GetPostBackClientHyperlink method. El control personalizado, MyControl, implementa la IPostBackEventHandler interfaz.The custom control, MyControl, implements the IPostBackEventHandler interface. Cuando se hace clic en el elemento delimitador HTML de la RaisePostBackEvent página, se invoca el método del control personalizado.When the HTML anchor element on the page is clicked, the RaisePostBackEvent method of the custom control is invoked.

<%@ 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">

  public class MyControl : Label, IPostBackEventHandler
  {

    // Use the constructor to defined default label text.
    public MyControl()
    {
      base.Text = "No postback raised.";
    }
    
    // Implement the RaisePostBackEvent method from the
    // IPostBackEventHandler interface. 
    public void RaisePostBackEvent(string eventArgument)
    {
      base.Text = "Postback handled by " + this.ID.ToString() + ". <br/>" +
                  "Postback caused by " + eventArgument.ToString() + ".";
      
    }
  }

  protected void Page_Load(object sender, EventArgs e)
  {
    // Get a ClientScriptManager reference from the Page class.
    ClientScriptManager cs = Page.ClientScript;

    // Create an instance of the custom label control and 
    // add it to the page.
    MyControl mycontrol = new MyControl();
    mycontrol.ID = "mycontrol1";
    PlaceHolder1.Controls.Add(mycontrol);
    PlaceHolder1.Controls.Add(new LiteralControl("<br/>"));
    
    // Create a button element with its onClick attribute defined
    // to create a postback event reference to the custom label control.
    HtmlInputButton b = new HtmlInputButton();
    b.ID = "mybutton1";
    b.Value = "Click";
    b.Attributes.Add("onclick", cs.GetPostBackEventReference(mycontrol, b.ID.ToString()));
    PlaceHolder1.Controls.Add(b);
    PlaceHolder1.Controls.Add(new LiteralControl("<br/>"));
    
    // Create a link element with its href attribute defined
    // to create a postback event reference to the custom label control.
    HtmlAnchor a = new HtmlAnchor();
    a.ID = "myanchor1";
    a.InnerText = "link";
    a.HRef = cs.GetPostBackClientHyperlink(mycontrol, a.ID.ToString());
    PlaceHolder1.Controls.Add(a);
  }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>ClientScriptManager Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <asp:PlaceHolder id="PlaceHolder1" 
                       runat="server">
      </asp:PlaceHolder>
    </div>
    </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">
  
  Public Class MyControl
    Inherits Label
    Implements IPostBackEventHandler
     
    Public Sub New()
      
      MyBase.Text = "No postback raised."
    
    End Sub
    
    Public Sub RaisePostBackEvent(ByVal eventArgument As String) Implements System.Web.UI.IPostBackEventHandler.RaisePostBackEvent
      
      MyBase.Text = "Postback handled by " & Me.ID.ToString() & ". <br/>" & _
                "Postback caused by " + eventArgument.ToString() & "."

    End Sub
    
  End Class
   

  Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)

    ' Get a ClientScriptManager reference from the Page class.
    Dim cs As ClientScriptManager = Page.ClientScript

    ' Create an instance of the custom label control and 
    ' add it to the page.
    Dim mycontrol As New MyControl()
    MyControl.ID = "mycontrol1"
    PlaceHolder1.Controls.Add(MyControl)
    PlaceHolder1.Controls.Add(New LiteralControl("<br/>"))
    
    ' Create a button element with its onClick attribute defined
    ' to create a postback event reference to the custom label control.
    Dim b As New HtmlInputButton()
    b.ID = "mybutton1"
    b.Value = "Click"
    b.Attributes.Add("onclick", cs.GetPostBackEventReference(MyControl, b.ID.ToString()))
    PlaceHolder1.Controls.Add(b)
    PlaceHolder1.Controls.Add(New LiteralControl("<br/>"))
    
    ' Create a link element with its href attribute defined
    ' to create a postback event reference to the custom label control.
    Dim a As New HtmlAnchor()
    a.ID = "myanchor1"
    a.InnerText = "link"
    a.HRef = cs.GetPostBackClientHyperlink(MyControl, a.ID.ToString())
    PlaceHolder1.Controls.Add(a)
    
  End Sub
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>ClientScriptManager Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <asp:PlaceHolder id="PlaceHolder1" 
                       runat="server">
      </asp:PlaceHolder>
    </div>
    </form>
</body>
</html>

El siguiente ejemplo de código tiene la misma funcionalidad que el anterior, salvo que en lugar de un control personalizado, la Page clase implementa la IPostBackEventHandler interfaz.The following code example has the same functionality as the preceding one, except that instead of a custom control, the Page class implements the IPostBackEventHandler interface.

<%@ Page Language="C#"  %>
<%@ Implements Interface="System.Web.UI.IPostBackEventHandler" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
  
  public void RaisePostBackEvent(string eventArgument)
  {
    Label1.Text = "Postback handled by " + this.ID.ToString() + ". <br/>" +
                  "Postback caused by " + eventArgument.ToString() + "."; ;
  }
  
  protected void Page_Load(object sender, EventArgs e)
  {
    // Get a ClientScriptManager reference from the Page class.
    ClientScriptManager cs = Page.ClientScript;
    
    // Create a button element with its onClick attribute defined
    // to create a postback event reference to the custom label control.
    HtmlInputButton b = new HtmlInputButton();
    b.ID = "mybutton1";
    b.Value = "Click";
    b.Attributes.Add("onclick", cs.GetPostBackEventReference(this, b.ID.ToString()));
    PlaceHolder1.Controls.Add(b);
    PlaceHolder1.Controls.Add(new LiteralControl("<br/>"));
    
    // Create a link element with its href attribute defined
    // to create a postback event reference to the custom label control.
    HtmlAnchor a = new HtmlAnchor();
    a.ID = "myanchor1";
    a.InnerText = "link";
    a.HRef = cs.GetPostBackClientHyperlink(this, a.ID.ToString());
    PlaceHolder1.Controls.Add(a);
  }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>ClientScriptManager Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <asp:Label id="Label1"
                 runat="server" />
      <br />
      <asp:PlaceHolder id="PlaceHolder1" 
                       runat="server">
      </asp:PlaceHolder>
    </div>
    </form>
</body>
</html>
<%@ Page Language="VB" %>
<%@ Implements Interface="System.Web.UI.IPostBackEventHandler" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
 
  Public Sub RaisePostBackEvent(ByVal eventArgument As String) _
    Implements IPostBackEventHandler.RaisePostBackEvent
    
    Label1.Text = "Postback handled by " & Me.ID.ToString() & ". <br/>" & _
           "Postback caused by " + eventArgument.ToString() & "."
  
  End Sub
  

  Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)

    ' Get a ClientScriptManager reference from the Page class.
    Dim cs As ClientScriptManager = Page.ClientScript
    
    ' Create a button element with its onClick attribute defined
    ' to create a postback event reference to the custom label control.
    Dim b As New HtmlInputButton()
    b.ID = "mybutton1"
    b.Value = "Click"
    b.Attributes.Add("onclick", cs.GetPostBackEventReference(Me, b.ID.ToString()))
    PlaceHolder1.Controls.Add(b)
    PlaceHolder1.Controls.Add(New LiteralControl("<br/>"))
    
    ' Create a link element with its href attribute defined
    ' to create a postback event reference to the custom label control.
    Dim a As New HtmlAnchor()
    a.ID = "myanchor1"
    a.InnerText = "link"
    a.HRef = cs.GetPostBackClientHyperlink(Me, a.ID.ToString())
    PlaceHolder1.Controls.Add(a)
    
  End Sub
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>ClientScriptManager Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <asp:Label id="Label1"
                 runat="server" />
      <br />
      <asp:PlaceHolder id="PlaceHolder1" 
                       runat="server">
      </asp:PlaceHolder>
    </div>
    </form>
</body>
</html>

Comentarios

El uso GetPostBackEventReference del método requiere que el control que controla el PostBack IPostBackEventHandler implemente la interfaz.Using the GetPostBackEventReference method requires the control that handles the postback to implement the IPostBackEventHandler interface. Para implementar la IPostBackEventHandler interfaz para un Page, utilice la Directiva.To implement the IPostBackEventHandler interface for a Page, use the directive.

Consulte también:

Obtiene una referencia, con javascript: anexado al principio, que se puede utilizar en un evento de devolución de datos del cliente al servidor para el control especificado y con los argumentos de evento especificados y, también, con una indicación booleana de si se debe registrar la devolución de datos para realizar la validación del evento.Gets a reference, with javascript: appended to the beginning of it, that can be used in a client event to post back to the server for the specified control with the specified event arguments and Boolean indication whether to register the post back for event validation.

public:
 System::String ^ GetPostBackClientHyperlink(System::Web::UI::Control ^ control, System::String ^ argument, bool registerForEventValidation);
public string GetPostBackClientHyperlink (System.Web.UI.Control control, string argument, bool registerForEventValidation);
member this.GetPostBackClientHyperlink : System.Web.UI.Control * string * bool -> string

Parámetros

control
Control

Control de servidor que va a procesar el valor devuelto.The server control to process the postback.

argument
String

Parámetro pasado al control de servidor.The parameter passed to the server control.

registerForEventValidation
Boolean

Es true para registrar el evento postback para su validación; es false para no registrarlo.true to register the postback event for validation; false to not register the post back event for validation.

Devoluciones

Cadena que representa una llamada de JavaScript a la función de postback que incluye el id. del control de destino y los argumentos del evento.A string representing a JavaScript call to the postback function that includes the target control's ID and event arguments.

Comentarios

El uso GetPostBackEventReference del método requiere que el control que controla el PostBack IPostBackEventHandler implemente la interfaz.Using the GetPostBackEventReference method requires the control that handles the postback to implement the IPostBackEventHandler interface. Para implementar la IPostBackEventHandler interfaz para un Page, utilice la Directiva.To implement the IPostBackEventHandler interface for a Page, use the directive.

Consulte también:

Se aplica a