Page.GetPostBackEventReference Method

Reference

Definition

Namespace:: System.Web.UI

Assembly:: System.Web.dll

Important

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Returns a string that can be used in a client event to cause postback to the server. This method has been deprecated. Use the GetPostBackEventReference method in the ClientScriptManager class instead.

Overloads

GetPostBackEventReference(Control)	Obsolete. Returns a string that can be used in a client event to cause postback to the server. The reference string is defined by the specified Control object.
GetPostBackEventReference(Control, String)	Obsolete. Returns a string that can be used in a client event to cause postback to the server. The reference string is defined by the specified control that handles the postback and a string argument of additional event information.

GetPostBackEventReference(Control)

Caution

The recommended alternative is ClientScript.GetPostBackEventReference. http://go.microsoft.com/fwlink/?linkid=14202

Returns a string that can be used in a client event to cause postback to the server. The reference string is defined by the specified Control object.

public:
 System::String ^ GetPostBackEventReference(System::Web::UI::Control ^ control);

public string GetPostBackEventReference (System.Web.UI.Control control);

[System.Obsolete("The recommended alternative is ClientScript.GetPostBackEventReference. http://go.microsoft.com/fwlink/?linkid=14202")]
public string GetPostBackEventReference (System.Web.UI.Control control);

member this.GetPostBackEventReference : System.Web.UI.Control -> string

[<System.Obsolete("The recommended alternative is ClientScript.GetPostBackEventReference. http://go.microsoft.com/fwlink/?linkid=14202")>]
member this.GetPostBackEventReference : System.Web.UI.Control -> string

Public Function GetPostBackEventReference (control As Control) As String

Parameters

control: Control

The server control to process the postback on the server.

Returns

String

A string that, when treated as script on the client, initiates the postback.

Attributes: ObsoleteAttribute

Examples

   public class MyControl1 : Control, IPostBackEventHandler
   {
      // Create an integer property that is displayed when
      // the page that contains this control is requested
      // and save it to the control's ViewState property.
      public int Number
      {
        get
        {
          if ( ViewState["Number"] !=null )
          return (int) ViewState["Number"];
          return 50;
        }

        set
        {
          ViewState["Number"] = value;
        }        
      }

      // Implement the RaisePostBackEvent method from the
      // IPostBackEventHandler interface. If 'inc' is passed
      // to this method, it increases the Number property by one.
      public void RaisePostBackEvent(string eventArgument)
      {
        Number = Number + 1;
      }

[System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")]
      protected override void Render(HtmlTextWriter writer)
      {
        // Converts the Number property to a string and
    // writes it to the containing page.
        writer.Write("The Number is " + Number.ToString() + " (" );

    // Uses the GetPostBackEventReference method to pass
    // 'inc' to the RaisePostBackEvent method when the link
    // this code creates is clicked.
        writer.Write("<a href=\"javascript:" + Page.GetPostBackEventReference(this) + "\">Increase Number</a>");
      }
   }

Public Class MyControl1
   Inherits Control
   Implements IPostBackEventHandler 
   
   ' Create an integer property that is displayed when
   ' the page that contains this control is requested
   ' and save it to the control's ViewState property.
   Public Property Number() As Integer
      Get
         If Not (ViewState("Number") Is Nothing) Then
            Return CInt(ViewState("Number"))
         End If
         Return 50
      End Get
      
      Set
         ViewState("Number") = value
      End Set
   End Property
   

   ' Implement the RaisePostBackEvent method from the
   ' IPostBackEventHandler interface. If inc is passed
   ' to this method, it increases the Number property by one.      
   Public Sub RaisePostBackEvent(eventArgument As String) Implements IPostBackEventHandler.RaisePostBackEvent

      Number = Number + 1
   End Sub
   
   <System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
   Protected Overrides Sub Render(writer As HtmlTextWriter)
      ' Converts the Number property to a string and
  ' writes it to the containing page.
      writer.Write(("The Number is " + Number.ToString() + " ("))

  ' Uses the GetPostBackEventReference method to pass
  ' inc to the RaisePostBackEvent method when the link
  ' this code creates is clicked.         
      writer.Write(("<a href=""javascript:" + Page.GetPostBackEventReference(Me) + """>Increase Number</a>"))
   End Sub
End Class

Remarks

This method has been deprecated. Use the GetPostBackEventReference method in the ClientScriptManager class instead.

Applies to

GetPostBackEventReference(Control, String)

Caution

The recommended alternative is ClientScript.GetPostBackEventReference. http://go.microsoft.com/fwlink/?linkid=14202

Returns a string that can be used in a client event to cause postback to the server. The reference string is defined by the specified control that handles the postback and a string argument of additional event information.

public:
 System::String ^ GetPostBackEventReference(System::Web::UI::Control ^ control, System::String ^ argument);

public string GetPostBackEventReference (System.Web.UI.Control control, string argument);

[System.Obsolete("The recommended alternative is ClientScript.GetPostBackEventReference. http://go.microsoft.com/fwlink/?linkid=14202")]
public string GetPostBackEventReference (System.Web.UI.Control control, string argument);

member this.GetPostBackEventReference : System.Web.UI.Control * string -> string

[<System.Obsolete("The recommended alternative is ClientScript.GetPostBackEventReference. http://go.microsoft.com/fwlink/?linkid=14202")>]
member this.GetPostBackEventReference : System.Web.UI.Control * string -> string

Public Function GetPostBackEventReference (control As Control, argument As String) As String

Parameters

control: Control

The server control to process the postback.

argument: String

The parameter passed to the server control.

Returns

String

A string that, when treated as script on the client, initiates the postback.

Attributes: ObsoleteAttribute

Examples

   public class MyControl : Control, IPostBackEventHandler
   {
      
      // Create an integer property that is displayed when
      // the page that contains this control is requested
      // and save it to the control's ViewState property.
      public int Number
      {
        get
        {
          if ( ViewState["Number"] !=null )
             return (int) ViewState["Number"];
          return 50;
        }

        set
        {
          ViewState["Number"] = value;
        }        
      }

      // Implement the RaisePostBackEvent method from the
      // IPostBackEventHandler interface. If 'inc' is passed
      // to this method, it increases the Number property by one.
      // If 'dec' is passed to this method, it decreases the
      // Number property by one.
      public void RaisePostBackEvent(string eventArgument)
      {
        if ( eventArgument == "inc" )
        Number = Number + 1;

        if ( eventArgument == "dec" )
        Number = Number - 1;
      }

[System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")]
      protected override void Render(HtmlTextWriter writer)
      {
        // Converts the Number property to a string and
    // writes it to the containing page.
        writer.Write("The Number is " + Number.ToString() + " (" );

    // Uses the GetPostBackEventReference method to pass
    // 'inc' to the RaisePostBackEvent method when the link
    // this code creates is clicked.
        writer.Write("<a href=\"javascript:" + Page.GetPostBackEventReference(this,"inc") + "\">Increase Number</a>"); 

        writer.Write(" or ");

    // Uses the GetPostBackEventReference method to pass
    // 'dec' to the RaisePostBackEvent method when the link
    // this code creates is clicked.
        writer.Write("<a href=\"javascript:" + Page.GetPostBackEventReference(this,"dec") + "\">Decrease Number</a>");
      }
   }

Public Class MyControl
   Inherits Control
   Implements IPostBackEventHandler

   ' Create an integer property that is displayed when
   ' the page that contains this control is requested
   ' and save it to the control's ViewState property.      
   Public Property Number() As Integer
      Get
         If Not (ViewState("Number") Is Nothing) Then
            Return CInt(ViewState("Number"))
         End If
         Return 50
      End Get
      
      Set
         ViewState("Number") = value
      End Set
   End Property      
   
   ' Implement the RaisePostBackEvent method from the
   ' IPostBackEventHandler interface. If inc is passed
   ' to this method, it increases the Number property by one.
   ' If dec is passed to this method, it decreases the
   ' Number property by one.
   Sub RaisePostBackEvent(eventArgument As String) Implements IPostBackEventHandler.RaisePostBackEvent

      If eventArgument = "inc" Then
         Number = Number + 1
      End If 
      If eventArgument = "dec" Then
         Number = Number - 1
      End If
   End Sub
   
   <System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _ 
   Protected Overrides Sub Render(writer As HtmlTextWriter)
      ' Converts the Number property to a string and
  ' writes it to the containing page.
      writer.Write(("The Number is " + Number.ToString() + " ("))
      
  ' Uses the GetPostBackEventReference method to pass
  ' inc to the RaisePostBackEvent method when the link
  ' this code creates is clicked.
      writer.Write(("<a href=""javascript:" + Page.GetPostBackEventReference(Me, "inc") + """>Increase Number</a>"))
      
      writer.Write(" or ")

  ' Uses the GetPostBackEventReference method to pass
  ' dec to the RaisePostBackEvent method when the link
  ' this code creates is clicked.         
      writer.Write(("<a href=""javascript:" + Page.GetPostBackEventReference(Me, "dec") + """>Decrease Number</a>"))
   End Sub
End Class

Remarks

This method has been deprecated. Use the GetPostBackEventReference method in the ClientScriptManager class instead.

Applies to

共用方式為

Page.GetPostBackEventReference Method

Definition

Overloads

GetPostBackEventReference(Control)

Parameters

Returns

Examples

Remarks

See also

Applies to

GetPostBackEventReference(Control, String)

Parameters

Returns

Examples

Remarks

See also

Applies to

其他資源