ClientScriptManager.GetPostBackClientHyperlink Método
Definición
Importante
Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.
Obtiene una referencia, con javascript:
anexado al principio, que se puede utilizar en un evento de devolución de datos del cliente al servidor.
Sobrecargas
GetPostBackClientHyperlink(Control, String) |
Obtiene una referencia, con |
GetPostBackClientHyperlink(Control, String, Boolean) |
Obtiene una referencia, con |
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.
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
Public Function GetPostBackClientHyperlink (control As Control, argument As String) As String
Parámetros
- control
- Control
Control de servidor que va a procesar el valor devuelto.
- argument
- String
Parámetro pasado al control de servidor.
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.
Ejemplos
En el ejemplo de código siguiente se muestra el uso del GetPostBackClientHyperlink método . El control personalizado, MyControl
, implementa la IPostBackEventHandler interfaz . Cuando se hace clic en el elemento delimitador HTML de la página, se invoca el RaisePostBackEvent método del control personalizado.
<%@ 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 ejemplo de código siguiente tiene la misma funcionalidad que la anterior, excepto que, en lugar de un control personalizado, la Page clase implementa la IPostBackEventHandler interfaz .
<%@ 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 del GetPostBackEventReference método requiere el control que controla el postback para implementar la IPostBackEventHandler interfaz . Para implementar la IPostBackEventHandler interfaz para , Pageuse la @ Implements
directiva .
Consulte también
Se aplica a
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.
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
Public Function GetPostBackClientHyperlink (control As Control, argument As String, registerForEventValidation As Boolean) As String
Parámetros
- control
- Control
Control de servidor que va a procesar el valor devuelto.
- argument
- String
Parámetro pasado al control de servidor.
- registerForEventValidation
- Boolean
Es true
para registrar el evento postback para su validación; es false
para no registrarlo.
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.
Comentarios
El uso del GetPostBackEventReference método requiere el control que controla el postback para implementar la IPostBackEventHandler interfaz . Para implementar la IPostBackEventHandler interfaz para , Pageuse la @ Implements
directiva .