Repeater.CreateItem(Int32, ListItemType) Metoda

Odwołanie

Definicja

Przestrzeń nazw:: System.Web.UI.WebControls

Zestaw:: System.Web.dll

Ważne

Niektóre informacje odnoszą się do produktu w wersji wstępnej, który może zostać znacząco zmodyfikowany przed wydaniem. Firma Microsoft nie udziela żadnych gwarancji, jawnych lub domniemanych, w odniesieniu do informacji podanych w tym miejscu.

RepeaterItem Tworzy obiekt o określonym typie i lokalizacji elementu w kontrolceRepeater.

protected:
 virtual System::Web::UI::WebControls::RepeaterItem ^ CreateItem(int itemIndex, System::Web::UI::WebControls::ListItemType itemType);

protected virtual System.Web.UI.WebControls.RepeaterItem CreateItem (int itemIndex, System.Web.UI.WebControls.ListItemType itemType);

abstract member CreateItem : int * System.Web.UI.WebControls.ListItemType -> System.Web.UI.WebControls.RepeaterItem
override this.CreateItem : int * System.Web.UI.WebControls.ListItemType -> System.Web.UI.WebControls.RepeaterItem

Protected Overridable Function CreateItem (itemIndex As Integer, itemType As ListItemType) As RepeaterItem

Parametry

itemIndex: Int32

Określona lokalizacja w kontrolce Repeater w celu umieszczenia utworzonego elementu.

itemType: ListItemType

Element ListItemType reprezentujący określony typ elementu do utworzenia Repeater .

Zwraca

RepeaterItem

Nowy obiekt RepeaterItem.

Przykłady

W poniższym przykładzie kodu pokazano, jak przesłonić metodę CreateItem w niestandardowej kontrolce serwera, tak aby zawsze zwracała nowy RepeaterItem i odpowiadający mu indeks oraz typ w niestandardowej Repeater kontrolce serwera.

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>
<%@ Page Language="C#" 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 - CreateItem - 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 - CreateItem - C# Example</h3>
            
            <aspSample:CustomRepeaterCreateItem 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:CustomRepeaterCreateItem>
       </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 - CreateItem - 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 - CreateItem - VB.NET Example</h3>
            
            <aspSample:CustomRepeaterCreateItem 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:CustomRepeaterCreateItem>
        </form>
    </body>
</html>

using System.Web;
using System.Security.Permissions;

namespace Samples.AspNet.CS.Controls
{
  [AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)]
  public sealed class CustomRepeaterCreateItem : System.Web.UI.WebControls.Repeater
  {
    protected override System.Web.UI.WebControls.RepeaterItem CreateItem(int itemIndex, System.Web.UI.WebControls.ListItemType itemType)
    {
      // Return a new RepeaterItem with the corresponding item index and type.
      return new System.Web.UI.WebControls.RepeaterItem(itemIndex, itemType);
    }
  }
}

Imports System.Web
Imports System.Security.Permissions

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

        Protected Overrides Function CreateItem(ByVal itemIndex As Integer, ByVal itemType As System.Web.UI.WebControls.ListItemType) As System.Web.UI.WebControls.RepeaterItem

            ' Return a new RepeaterItem with the corresponding item index and type.
            Return New System.Web.UI.WebControls.RepeaterItem(itemIndex, itemType)
        End Function
    End Class
End Namespace

Dotyczy

Zobacz też

Repeater Web Server Control — omówienie

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