DetailsView.TopPagerRow Propiedad
Definición
Importante
Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.
Obtiene un objeto DetailsViewRow que representa la fila de paginación superior de un control DetailsView.
public:
virtual property System::Web::UI::WebControls::DetailsViewRow ^ TopPagerRow { System::Web::UI::WebControls::DetailsViewRow ^ get(); };[System.ComponentModel.Browsable(false)]
public virtual System.Web.UI.WebControls.DetailsViewRow TopPagerRow { get; }[<System.ComponentModel.Browsable(false)>]
member this.TopPagerRow : System.Web.UI.WebControls.DetailsViewRowPublic Overridable ReadOnly Property TopPagerRow As DetailsViewRowValor de propiedad
Un objeto DetailsViewRow que representa la fila de paginación superior en el control DetailsView.
- Atributos
Ejemplos
En el ejemplo de código siguiente se muestra cómo usar la TopPagerRow propiedad para tener acceso a la fila del buscapersonas superior del DetailsView control durante el ItemCreated evento . Dos Label controles dentro de la fila del buscapersonas personalizadas se actualizan con el número de página actual y el número total de páginas.
<%@ 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">
protected void CustomerDetailView_DataBound(object sender, EventArgs e)
{
// Get the pager row.
DetailsViewRow pagerRow = CustomerDetailView.TopPagerRow;
// Get the Label controls that display the current page information
// from the pager row.
Label pageNum = (Label)pagerRow.Cells[0].FindControl("PageNumberLabel");
Label totalNum = (Label)pagerRow.Cells[0].FindControl("TotalPagesLabel");
if ((pageNum != null) && (totalNum != null))
{
// Update the Label controls with the current page values.
int page = CustomerDetailView.DataItemIndex + 1;
int count = CustomerDetailView.DataItemCount;
pageNum.Text = page.ToString();
totalNum.Text = count.ToString();
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>DetailsView TopPagerRow Example</title>
</head>
<body>
<form id="Form1" runat="server">
<h3>DetailsView TopPagerRow Example</h3>
<!-- Notice that the LinkButton controls in the pager -->
<!-- template have their CommandName properties set. -->
<!-- The DetailsView control automatically recognizes -->
<!-- certain command names and performs the appropriate -->
<!-- operation. In this example, the CommandName -->
<!-- properties are set to "Next" and "Prev", which -->
<!-- causes the DetailsView control to navigate to the -->
<!-- next and previous record, respectively. -->
<asp:detailsview id="CustomerDetailView"
datasourceid="DetailsViewSource"
autogeneraterows="true"
allowpaging="true"
runat="server" OnDataBound="CustomerDetailView_DataBound">
<fieldheaderstyle backcolor="Navy"
forecolor="White"/>
<PagerSettings Position="top" />
<pagertemplate>
<table width="100%">
<tr>
<td>
<asp:LinkButton id="PreviousButton"
text="<"
CommandName="Page"
CommandArgument="Prev"
runat="Server"/>
<asp:LinkButton id="NextButton"
text=">"
CommandName="Page"
CommandArgument="Next"
runat="Server"/>
</td>
<td align="right">
Page <asp:Label id="PageNumberLabel" runat="server"/>
of <asp:Label id="TotalPagesLabel" runat="server"/>
</td>
</tr>
</table>
</pagertemplate>
</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">
Protected Sub CustomerDetailView_DataBound(ByVal sender As Object, ByVal e As EventArgs)
' Get the pager row.
Dim pagerRow As DetailsViewRow = CustomerDetailView.TopPagerRow
' Get the Label controls that display the current page information
' from the pager row.
Dim pageNum As Label = CType(pagerRow.Cells(0).FindControl("PageNumberLabel"), Label)
Dim totalNum As Label = CType(pagerRow.Cells(0).FindControl("TotalPagesLabel"), Label)
If (pageNum IsNot Nothing) And (totalNum IsNot Nothing) Then
' Update the Label controls with the current page values.
Dim page As Integer = CustomerDetailView.DataItemIndex + 1
Dim count As Integer = CustomerDetailView.DataItemCount
pageNum.Text = Page.ToString()
totalNum.Text = count.ToString()
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>DetailsView TopPagerRow Example</title>
</head>
<body>
<form id="Form1" runat="server">
<h3>DetailsView TopPagerRow Example</h3>
<!-- Notice that the LinkButton controls in the pager -->
<!-- template have their CommandName properties set. -->
<!-- The DetailsView control automatically recognizes -->
<!-- certain command names and performs the appropriate -->
<!-- operation. In this example, the CommandName -->
<!-- properties are set to "Page" -->
<!-- and the CommandArgument -->
<!-- properties are set to "Next" and "Prev", which -->
<!-- causes the DetailsView control to navigate to the -->
<!-- next and previous record, respectively. -->
<asp:detailsview id="CustomerDetailView"
datasourceid="DetailsViewSource"
autogeneraterows="true"
allowpaging="true"
runat="server"
OnDataBound="CustomerDetailView_DataBound">
<fieldheaderstyle backcolor="Navy"
forecolor="White"/>
<PagerSettings Position="top" />
<pagertemplate>
<table width="100%">
<tr>
<td>
<asp:LinkButton id="PreviousButton"
text="<"
CommandName="Page"
CommandArgument="Prev"
runat="Server"/>
<asp:LinkButton id="NextButton"
text=">"
CommandName="Page"
CommandArgument="Next"
runat="Server"/>
</td>
<td align="right">
Page <asp:Label id="PageNumberLabel" runat="server"/>
of <asp:Label id="TotalPagesLabel" runat="server"/>
</td>
</tr>
</table>
</pagertemplate>
</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>
Comentarios
Cuando se habilita la paginación (estableciendo la AllowPaging propiedad trueen ), se muestra automáticamente en el control una fila adicional denominada fila del buscapersonas DetailsView . La fila del buscapersonas contiene controles que permiten al usuario navegar a otros registros y se pueden mostrar en la parte superior, en la parte inferior o en la parte superior e inferior del control. Utilice la TopPagerRow propiedad para tener acceso mediante programación al DetailsViewRow objeto que representa la fila del buscapersonas superior del DetailsView control.
Nota:
La TopPagerRow propiedad solo está disponible después de que el DetailsView control cree la fila del buscapersonas inferior en el ItemCreated evento .
Esta propiedad se usa normalmente cuando es necesario manipular mediante programación la fila del buscapersonas superior, por ejemplo, al agregar contenido personalizado. Cualquier modificación de la TopPagerRow propiedad debe realizarse después de que se haya representado el DetailsView control; de lo contrario, el DetailsView control sobrescribirá los cambios.
