Język

NextPreviousPagerField Konstruktor

Definicja

Inicjuje nowe wystąpienie klasy NextPreviousPagerField.

public:
 NextPreviousPagerField();
public NextPreviousPagerField();
Public Sub New ()

Przykłady

W poniższym przykładzie pokazano, jak używać konstruktora do dynamicznego dodawania NextPreviousPagerField obiektu do kontrolki DataPager .

<%@ 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">

  // <Snippet2>  
  void Page_Load(Object sender, EventArgs e)
  {
    
    // Dynamically generated field pagers need to be created only 
    // the first time the page is loaded.
    
    if (!IsPostBack)
    {
      // Create a NextPreviousPagerField object to display
      // the buttons to navigate.
      NextPreviousPagerField pagerField = new NextPreviousPagerField();
      pagerField.ShowFirstPageButton = true;
      pagerField.ShowLastPageButton = true;
      pagerField.ButtonType = ButtonType.Button;

      // Add the pager field to the Fields collection of the
      // DataPager control.
      ContactsDataPager.Fields.Add(pagerField);
    }

    ContactsListView.DataBind();
  
  }
  // </Snippet2>
  
</script>
    
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head id="Head1" runat="server">
    <title>NextPreviousPagerField Constructor Example</title>
  </head>
  <body>
    <form id="form1" runat="server">
        
      <h3>NextPreviousPagerField Constructor Example</h3>
          
      <asp:ListView ID="ContactsListView" 
        DataSourceID="ContactsDataSource"
        runat="server">
        <LayoutTemplate>
          <table cellpadding="2" width="640px" border="1" runat="server" id="tblContacts">
            <tr id="itemPlaceholder" runat="server">
            </tr>
          </table>
        </LayoutTemplate>
        <ItemTemplate>
          <tr runat="server">
            <td>
              <asp:Label ID="IDLabel" runat="server" Text='<%#Eval("ContactID") %>' />
            </td>            
            <td>
              <asp:Label ID="FirstNameLabel" runat="server" Text='<%#Eval("FirstName") %>' />
            </td>
            <td>
              <asp:Label ID="LastNameLabel" runat="server" Text='<%#Eval("LastName") %>' />
            </td>
          </tr>
        </ItemTemplate>
      </asp:ListView>

      <asp:DataPager runat="server" ID="ContactsDataPager" PagedControlID="ContactsListView" />

      <!-- This example uses Microsoft SQL Server and connects      -->
      <!-- to the AdventureWorks sample database. Use an ASP.NET    -->
      <!-- expression to retrieve the connection string value       -->
      <!-- from the Web.config file.                                -->
      <asp:SqlDataSource ID="ContactsDataSource" runat="server" 
        ConnectionString="<%$ ConnectionStrings:AdventureWorks_DataConnectionString %>"
        SelectCommand="SELECT [ContactID], [FirstName], [LastName] FROM Person.Contact">
      </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">

  ' <Snippet2>
  Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
    
    ' Dynamically generated field pagers need to be created only 
    ' the first time the page is loaded.

    If Not IsPostBack Then
      ' Create a NextPreviousPagerField object to display
      ' the buttons to navigate.
      Dim pagerField As New NextPreviousPagerField()
      pagerField.ShowFirstPageButton = True
      pagerField.ShowLastPageButton = True
      pagerField.ButtonType = ButtonType.Button
  
      ' Add the pager field to the Fields collection of the
      ' DataPager control.
      ContactsDataPager.Fields.Add(pagerField)
    End If
        
    ContactsListView.DataBind()

  End Sub
  ' </Snippet2>
  
</script>
    
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head id="Head1" runat="server">
    <title>NextPreviousPagerField Constructor Example</title>
  </head>
  <body>
    <form id="form1" runat="server">
        
      <h3>NextPreviousPagerField Constructor Example</h3>
          
      <asp:ListView ID="ContactsListView" 
        DataSourceID="ContactsDataSource"
        runat="server">
        <LayoutTemplate>
          <table cellpadding="2" width="640px" border="1" runat="server" id="tblContacts">
            <tr id="itemPlaceholder" runat="server">
            </tr>
          </table>
        </LayoutTemplate>
        <ItemTemplate>
          <tr runat="server">
            <td>
              <asp:Label ID="IDLabel" runat="server" Text='<%#Eval("ContactID") %>' />
            </td>            
            <td>
              <asp:Label ID="FirstNameLabel" runat="server" Text='<%#Eval("FirstName") %>' />
            </td>
            <td>
              <asp:Label ID="LastNameLabel" runat="server" Text='<%#Eval("LastName") %>' />
            </td>
          </tr>
        </ItemTemplate>
      </asp:ListView>

      <asp:DataPager runat="server" ID="ContactsDataPager" PagedControlID="ContactsListView" />

      <!-- This example uses Microsoft SQL Server and connects      -->
      <!-- to the AdventureWorks sample database. Use an ASP.NET    -->
      <!-- expression to retrieve the connection string value       -->
      <!-- from the Web.config file.                                -->
      <asp:SqlDataSource ID="ContactsDataSource" runat="server" 
        ConnectionString="<%$ ConnectionStrings:AdventureWorks_DataConnectionString %>"
        SelectCommand="SELECT [ContactID], [FirstName], [LastName] FROM Person.Contact">
      </asp:SqlDataSource>
      
    </form>
  </body>
</html>

Uwagi

Użyj konstruktora NextPreviousPagerField , aby zainicjować nowe wystąpienie NextPreviousPagerField klasy. Ten konstruktor jest zwykle używany podczas dodawania pól do dynamicznej kontrolki.DataPager

Aby dynamicznie dodać NextPreviousPagerField obiekt do DataPager kontrolki, utwórz nowy NextPreviousPagerField obiekt, ustaw jego właściwości, a następnie dodaj go do kolekcji pól dla kontrolki DataPager .

Dotyczy

Zobacz też