DetailsView.PageIndexChanged DetailsView.PageIndexChanged DetailsView.PageIndexChanged DetailsView.PageIndexChanged Event

Definizione

Si verifica quando il valore della proprietà PageIndex cambia dopo un'operazione di spostamento.Occurs when the value of the PageIndex property changes after a paging operation.

public:
 event EventHandler ^ PageIndexChanged;
public event EventHandler PageIndexChanged;
member this.PageIndexChanged : EventHandler 
Public Custom Event PageIndexChanged As EventHandler 

Esempi

Nell'esempio di codice riportato di seguito viene illustrato PageIndexChanged come utilizzare l'evento DetailsView per restituire la modalità di sola lettura quando l'utente passa a un altro record.The following code example demonstrates how to use the PageIndexChanged event to return the DetailsView to read-only mode when the user navigates to another record.


<%@ 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">

  void CustomerDetailView_PageIndexChanged(Object sender, EventArgs e)
  {
    // By default, if the DetailsView control is in edit mode and
    // user navigates to another page, the DetailsView control
    // remains in edit mode. In this example, the ChangeMode 
    // method is used to put the DetailsView control in read-only  
    // mode whenever the user navigates to another record.
      CustomerDetailView.ChangeMode(DetailsViewMode.ReadOnly);
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>DetailsView ChangeMode Example</title>
</head>
<body>
    <form id="Form1" runat="server">
        
      <h3>DetailsView ChangeMode Example</h3>
                
        <asp:detailsview id="CustomerDetailView"
          datasourceid="DetailsViewSource"
          datakeynames="CustomerID"
          autogenerateeditbutton="true"  
          autogeneraterows="true"
          allowpaging="true"
          OnPageIndexChanged="CustomerDetailView_PageIndexChanged"
          runat="server">
               
          <fieldheaderstyle backcolor="Navy"
            forecolor="White"/>
                    
        </asp:detailsview>
        
        <!-- This example uses Microsoft SQL Server and connects  -->
        <!-- to the Northwind sample database. Use an ASP.NET     -->
        <!-- expression to retrieve the connection string value   -->
        <!-- from the web.config file.                            -->
        <asp:SqlDataSource ID="DetailsViewSource" runat="server" 
          ConnectionString=
            "<%$ ConnectionStrings:NorthWindConnectionString%>"
          InsertCommand="INSERT INTO [Customers]([CustomerID],
            [CompanyName], [Address], [City], [PostalCode], [Country]) 
            VALUES (@CustomerID, @CompanyName, @Address, @City, 
            @PostalCode, @Country)"
          SelectCommand="Select [CustomerID], [CompanyName], 
            [Address], [City], [PostalCode], [Country] From 
            [Customers]">
        </asp:SqlDataSource>
    </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">

    Sub CustomerDetailView_PageIndexChanged(ByVal sender As Object, _
        ByVal e As EventArgs)
        ' By default, if the DetailsView control is in edit mode and
        ' user navigates to another page, the DetailsView control
        ' remains in edit mode. In this example, the ChangeMode 
        ' method is used to put the DetailsView control in read-only  
        ' mode whenever the user navigates to another record.
        CustomerDetailView.ChangeMode(DetailsViewMode.ReadOnly)
    End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>DetailsView ChangeMode Example</title>
</head>
<body>
    <form id="Form1" runat="server">
        
      <h3>DetailsView ChangeMode Example</h3>
                
        <asp:detailsview id="CustomerDetailView"
          datasourceid="DetailsViewSource"
          datakeynames="CustomerID"
          autogenerateeditbutton="true"  
          autogeneraterows="true"
          allowpaging="true"
          OnPageIndexChanged="CustomerDetailView_PageIndexChanged"
          runat="server">
               
          <fieldheaderstyle backcolor="Navy"
            forecolor="White"/>
                    
        </asp:detailsview>
        
        <!-- This example uses Microsoft SQL Server and connects  -->
        <!-- to the Northwind sample database. Use an ASP.NET     -->
        <!-- expression to retrieve the connection string value   -->
        <!-- from the web.config file.                            -->
        <asp:SqlDataSource ID="DetailsViewSource" runat="server" 
          ConnectionString=
            "<%$ ConnectionStrings:NorthWindConnectionString%>"
          InsertCommand="INSERT INTO [Customers]([CustomerID],
            [CompanyName], [Address], [City], [PostalCode], [Country]) 
            VALUES (@CustomerID, @CompanyName, @Address, @City, 
            @PostalCode, @Country)"
          SelectCommand="Select [CustomerID], [CompanyName], 
            [Address], [City], [PostalCode], [Country] From 
            [Customers]">
        </asp:SqlDataSource>
    </form>
  </body>
</html>

Commenti

Il DetailsView controllo genera l' PageIndexChanged evento quando viene fatto clic su un pulsante del cercapersone CommandName , ovvero un pulsante con la relativa proprietà impostata su "Page", all'interno del DetailsView controllo, ma dopo che il controllo ha gestito l'operazione di paging.The DetailsView control raises the PageIndexChanged event when a pager button (a button with its CommandName property set to "Page") within the control is clicked, but after the DetailsView control handles the paging operation. Questo consente di fornire un gestore eventi che esegue una routine personalizzata ogni volta che si verifica questo evento.This allows you to provide an event handler that performs a custom routine whenever this event occurs.

Nota

Questo evento non viene generato quando si imposta a livello di PageIndex codice la proprietà.This event is not raised when you programmatically set the PageIndex property.

I pulsanti di spostamento si trovano in genere nella riga del DetailsView cercapersone di un controllo.Pager buttons are usually located in the pager row of a DetailsView control. Questo evento viene spesso usato per sincronizzare un DetailsView controllo con un GridView controllo o per DetailsView impostare il comportamento del controllo dopo un'operazione di paging.This event is often used to synchronize a DetailsView control with a GridView control or to set the behavior of the DetailsView control after a paging operation.

Per altre informazioni su come gestire gli eventi, vedere la gestione e generazione di eventi.For more information about how to handle events, see Handling and Raising Events.

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