次の方法で共有


Repeater.OnBubbleEvent(Object, EventArgs) メソッド

定義

EventArgs パラメーターが ItemCommand のインスタンスである場合、RepeaterCommandEventArgs イベントを発生させます。

protected:
 override bool OnBubbleEvent(System::Object ^ sender, EventArgs ^ e);
protected override bool OnBubbleEvent (object sender, EventArgs e);
override this.OnBubbleEvent : obj * EventArgs -> bool
Protected Overrides Function OnBubbleEvent (sender As Object, e As EventArgs) As Boolean

パラメーター

sender
Object

イベントのソース。

e
EventArgs

イベント データを格納している EventArgs オブジェクト。

戻り値

ItemCommand が発生した場合は true。それ以外の場合は false

次のコード例では、カスタム サーバー コントロールの メソッドをオーバーライド OnDataBinding して、イベント引数がコマンド型の場合、 Repeater コントロールが常に を呼び出 OnItemCommand してイベントをバブルアップするか、イベントを false 返して取り消す方法を示します。

<%@ Page Language="C#" AutoEventWireup="True" %>
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>Custom Repeater - OnBubbleEvent - C# Example</title>
    <script language="C#" runat="server">
      void Page_Load(Object Sender, EventArgs e) 
      {
        if (!IsPostBack) 
        {
          ArrayList values = new ArrayList();
          values.Add(new PositionData("Microsoft", "Msft"));
          values.Add(new PositionData("Intel", "Intc"));
          values.Add(new PositionData("Dell", "Dell"));

          Repeater1.DataSource = values;
          Repeater1.DataBind();
        }
      }

      public class PositionData 
      {
        private string name;
        private string ticker;

        public PositionData(string name, string ticker) 
        {
          this.name = name;
          this.ticker = ticker;
        }

        public string Name 
        {
          get 
          {
            return name;
          }
        }

        public string Ticker 
        {
          get 
          {
            return ticker;
          }
        }
      }
    </script>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">
      <h3>Custom Repeater - OnBubbleEvent - C# Example</h3>
      <aspSample:CustomRepeaterOnBubbleEvent id="Repeater1" runat="server">
        <HeaderTemplate>
          <table border="1" cellpadding="4" cellspacing="0">
            <tr>
              <th>Company</th>
              <th>Symbol</th>
            </tr>
        </HeaderTemplate>
        <ItemTemplate>
          <tr>
            <td> <%# DataBinder.Eval(Container.DataItem, "Name") %></td>
            <td> <%# DataBinder.Eval(Container.DataItem, "Ticker") %></td>
          </tr>
        </ItemTemplate>
        <FooterTemplate>
            </table>
        </FooterTemplate>
      </aspSample:CustomRepeaterOnBubbleEvent>
    </form>
  </body>
</html>
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VB.Controls" Assembly="Samples.AspNet.VB" %>
<%@ Page Language="VB" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
    <head>
        <title>Custom Repeater - OnBubbleEvent - VB.NET Example</title>
        <script language="VB" runat="server">
            Sub Page_Load(Sender As Object, e As EventArgs)
                If Not IsPostBack Then
                    Dim values As New ArrayList()
                    
                    values.Add(New PositionData("Microsoft", "Msft"))
                    values.Add(New PositionData("Intel", "Intc"))
                    values.Add(New PositionData("Dell", "Dell"))
                    
                    Repeater1.DataSource = values
                    Repeater1.DataBind()
                End If
            End Sub

            Public Class PositionData
                
                Private myName As String
                Private myTicker As String        
                
                Public Sub New(newName As String, newTicker As String)
                    Me.myName = newName
                    Me.myTicker = newTicker
                End Sub        
                
                Public ReadOnly Property Name() As String
                    Get
                        Return myName
                    End Get
                End Property        
                
                Public ReadOnly Property Ticker() As String
                    Get
                        Return myTicker
                    End Get
                End Property
            End Class
        </script>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom Repeater - OnBubbleEvent - VB.NET Example</h3>
            
            <aspSample:CustomRepeaterOnBubbleEvent id="Repeater1" runat="server" >
                    <HeaderTemplate>
                        <table border="1" cellpadding="4" cellspacing="0">
                            <tr>
                                <th>Company</th>
                                <th>Symbol</th>
                            </tr>
                    </HeaderTemplate>
                    <ItemTemplate>
                        <tr>
                            <td> <%# DataBinder.Eval(Container.DataItem, "Name") %></td>
                            <td> <%# DataBinder.Eval(Container.DataItem, "Ticker") %></td>
                        </tr>
                    </ItemTemplate>
                    <FooterTemplate>
                        </table>
                    </FooterTemplate>
                </aspSample:CustomRepeaterOnBubbleEvent>
        </form>
    </body>
</html>
using System.Web;
using System.Security.Permissions;

namespace Samples.AspNet.CS.Controls
{
  [AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)]
  public sealed class CustomRepeaterOnBubbleEvent : System.Web.UI.WebControls.Repeater
  {
    protected override bool OnBubbleEvent(object source, System.EventArgs args)
    {
      // If the EventArgs are of type RepeaterCommandEventArgs,
      // then call the OnItemCommand event handler and return true (bubble up the event)
      // else return false (don't bubble up the event).
      bool isHandled = false;
      if (args is System.Web.UI.WebControls.RepeaterCommandEventArgs) 
      {
        this.OnItemCommand((System.Web.UI.WebControls.RepeaterCommandEventArgs)args);
        isHandled = true;
      }
      return isHandled;
    }
  }
}
Imports System.Web
Imports System.Security.Permissions

Namespace Samples.AspNet.VB.Controls
    <AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
    Public NotInheritable Class CustomRepeaterOnBubbleEvent
        Inherits System.Web.UI.WebControls.Repeater

        Protected Overrides Function OnBubbleEvent(ByVal [source] As Object, ByVal args As System.EventArgs) As Boolean

            ' If the EventArgs are of type RepeaterCommadnEventArgs,
            ' then call the OnItemCommand event handler and return true (bubble up the event)
            ' else return false (don't bubble up the event).
            Dim isHandled As Boolean = False
            If TypeOf args Is System.Web.UI.WebControls.RepeaterCommandEventArgs Then
                Me.OnItemCommand(CType(args, System.Web.UI.WebControls.RepeaterCommandEventArgs))
                isHandled = True
            End If
            Return isHandled
        End Function
    End Class
End Namespace

適用対象

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