DataPager.Fields Property

Reference

Definition

Namespace:: System.Web.UI.WebControls

Assembly:: System.Web.Extensions.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets a collection of DataPagerField objects that represent the pager fields that are specified in a DataPager control.

public:
 virtual property System::Web::UI::WebControls::DataPagerFieldCollection ^ Fields { System::Web::UI::WebControls::DataPagerFieldCollection ^ get(); };

[System.Web.UI.PersistenceMode(System.Web.UI.PersistenceMode.InnerProperty)]
public virtual System.Web.UI.WebControls.DataPagerFieldCollection Fields { get; }

[<System.Web.UI.PersistenceMode(System.Web.UI.PersistenceMode.InnerProperty)>]
member this.Fields : System.Web.UI.WebControls.DataPagerFieldCollection

Public Overridable ReadOnly Property Fields As DataPagerFieldCollection

Property Value

DataPagerFieldCollection

A collection object that contains all the pager fields that are specified in the DataPager control.

Attributes: PersistenceModeAttribute

Examples

The following example shows how to declaratively add pager fields to the Fields collection of a DataPager control.

<%@ Page language="C#" %>
    
<!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 id="Head1" runat="server">
    <title>DataPagerField Example</title>    
    <style type="text/css">
      body  
      {
        text-align: center; 
        font: 13px Tahoma, Arial, Helvetica;
      }
      .item
      {
        border-bottom: solid 1px #FFA500;
        font-weight:bold;
      }
    </style>
  </head>
  <body>
    <form id="form1" runat="server">
        
      <h3>DataPagerField Example</h3>
          
      <asp:ListView ID="ProductsListView" 
        DataSourceID="ContactsDataSource"
        runat="server">
        <LayoutTemplate>
          <table runat="server" id="tblProducts" width="350">
            <tr runat="server" id="itemPlaceholder" />
          </table>
        </LayoutTemplate>
        <ItemTemplate>
          <tr runat="server">
            <td class="item">
              <asp:Label ID="NameLabel" runat="server" 
                Text='<%#Eval("Name") %>' />
            </td>
          </tr>
          <tr runat="server">
            <td>
              <asp:Label ID="DescriptionLabel" runat="server" 
                Text='<%#Eval("Description")%>' />
            </td>
          </tr>
        </ItemTemplate>
        <ItemSeparatorTemplate>
          <tr runat="server">
            <td>&nbsp;</td>
          </tr>
        </ItemSeparatorTemplate>
      </asp:ListView>
      <br />

      <asp:DataPager runat="server" 
        ID="ProductsDataPager" 
        PageSize="5"
        PagedControlID="ProductsListView">
        <Fields>
          <asp:TemplatePagerField>
            <PagerTemplate>
            <b>
            Page
            <asp:Label runat="server" ID="CurrentPageLabel" 
              Text="<%# Container.TotalRowCount>0 ? (Container.StartRowIndex / Container.PageSize) + 1 : 0 %>" />
            of
            <asp:Label runat="server" ID="TotalPagesLabel" 
              Text="<%# Math.Ceiling ((double)Container.TotalRowCount / Container.PageSize) %>" />
            </b>
            <br /><br />
            </PagerTemplate>
          </asp:TemplatePagerField>
          
          <asp:NextPreviousPagerField
            ShowFirstPageButton="true"
            ShowNextPageButton="false"
            ShowPreviousPageButton="false" />
          
          <asp:NumericPagerField 
            PreviousPageText="&lt;&lt;"
            NextPageText="&gt;&gt;"
            ButtonCount="10" />
            
          <asp:NextPreviousPagerField
            ShowLastPageButton="true"
            ShowNextPageButton="false"
            ShowPreviousPageButton="false" />
        </Fields>
      </asp:DataPager>

      <!-- 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 P.Name, PD.Description 
                      FROM Production.ProductModel AS PM 
                      INNER JOIN Production.Product AS P ON PM.ProductModelID = P.ProductModelID 
                      INNER JOIN Production.ProductModelProductDescriptionCulture AS PMPDC 
                      ON PM.ProductModelID = PMPDC.ProductModelID 
                      INNER JOIN Production.ProductDescription AS PD 
                      ON PMPDC.ProductDescriptionID = PD.ProductDescriptionID 
                      WHERE (PMPDC.CultureID = 'en')">
      </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">
    
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head id="Head1" runat="server">
    <title>DataPagerField Example</title>    
    <style type="text/css">
      body  
      {
        text-align: center; 
        font: 13px Tahoma, Arial, Helvetica;
      }
      .item
      {
        border-bottom: solid 1px #FFA500;
        font-weight:bold;
      }
    </style>
  </head>
  <body>
    <form id="form1" runat="server">
        
      <h3>DataPagerField Example</h3>
          
      <asp:ListView ID="ProductsListView" 
        DataSourceID="ContactsDataSource"
        runat="server">
        <LayoutTemplate>
          <table runat="server" id="tblProducts" width="350">
            <tr runat="server" id="itemPlaceholder" />
          </table>
        </LayoutTemplate>
        <ItemTemplate>
          <tr runat="server">
            <td class="item">
              <asp:Label ID="NameLabel" runat="server" 
                Text='<%#Eval("Name") %>' />
            </td>
          </tr>
          <tr runat="server">
            <td>
              <asp:Label ID="DescriptionLabel" runat="server" 
                Text='<%#Eval("Description")%>' />
            </td>
          </tr>
        </ItemTemplate>
        <ItemSeparatorTemplate>
          <tr runat="server">
            <td>&nbsp;</td>
          </tr>
        </ItemSeparatorTemplate>
      </asp:ListView>
      <br />

      <asp:DataPager runat="server" 
        ID="ProductsDataPager" 
        PageSize="5"
        PagedControlID="ProductsListView">
        <Fields>
          <asp:TemplatePagerField>
            <PagerTemplate>
            <b>
            Page
            <asp:Label runat="server" ID="CurrentPageLabel" 
              Text="<%# IIf(Container.TotalRowCount>0, (Container.StartRowIndex / Container.PageSize) + 1, 0) %>" />
            of
            <asp:Label runat="server" ID="TotalPagesLabel" 
              Text="<%# Math.Ceiling (System.Convert.ToDouble(Container.TotalRowCount) / Container.PageSize) %>" />
            </b>
            <br /><br />            
            </PagerTemplate>
          </asp:TemplatePagerField>
          
          <asp:NextPreviousPagerField
            ShowFirstPageButton="true"
            ShowNextPageButton="false"
            ShowPreviousPageButton="false" />
          
          <asp:NumericPagerField 
            PreviousPageText="&lt;&lt;"
            NextPageText="&gt;&gt;"
            ButtonCount="10" />
            
          <asp:NextPreviousPagerField
            ShowLastPageButton="true"
            ShowNextPageButton="false"
            ShowPreviousPageButton="false" />
        </Fields>
      </asp:DataPager>

      <!-- 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 P.Name, PD.Description 
                      FROM Production.ProductModel AS PM 
                      INNER JOIN Production.Product AS P ON PM.ProductModelID = P.ProductModelID 
                      INNER JOIN Production.ProductModelProductDescriptionCulture AS PMPDC 
                      ON PM.ProductModelID = PMPDC.ProductModelID 
                      INNER JOIN Production.ProductDescription AS PD 
                      ON PMPDC.ProductDescriptionID = PD.ProductDescriptionID 
                      WHERE (PMPDC.CultureID = 'en')">
      </asp:SqlDataSource>
      
    </form>
  </body>
</html>

The following example shows how to use the Fields property to dynamically add a NextPreviousPagerField object to a DataPager control. This code example is part of a larger example provided for the NextPreviousPagerField constructor.

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();

}

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

Remarks

The pager fields are displayed in the DataPager control in the order that the pager fields appear in the Fields collection. The following table shows the pager field classes that derive from the DataPagerField class and that can be used in the Fields collection.

Pager field type	Description
NextPreviousPagerField	Enables users to navigate through pages of data one page at a time, or to jump to the first or last page of data.
NumericPagerField	Enables users to select a page of data by page number.
TemplatePagerField	Enables you to create a custom paging UI.

To declaratively specify the pager fields for a DataPager control, put a Fields element inside the DataPager control. You can then list the pager fields you want to include between the opening and closing <Fields> tags.

You can programmatically add pager fields to the Fields collection. However, it is easier to list the pager fields declaratively in the DataPager control.

Applies to

Dela via