GridView.SortDirection 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 el sentido de ordenación de la columna que se va a ordenar.
public:
virtual property System::Web::UI::WebControls::SortDirection SortDirection { System::Web::UI::WebControls::SortDirection get(); };[System.ComponentModel.Browsable(false)]
[System.Web.UI.PersistenceMode(System.Web.UI.PersistenceMode.InnerProperty)]
public virtual System.Web.UI.WebControls.SortDirection SortDirection { get; }[<System.ComponentModel.Browsable(false)>]
[<System.Web.UI.PersistenceMode(System.Web.UI.PersistenceMode.InnerProperty)>]
member this.SortDirection : System.Web.UI.WebControls.SortDirectionPublic Overridable ReadOnly Property SortDirection As SortDirectionValor de propiedad
Uno de los valores de SortDirection. De manera predeterminada, es SortDirection.Ascending.
- Atributos
Ejemplos
En el ejemplo siguiente se muestra cómo usar la SortDirection propiedad para determinar mediante programación la dirección de ordenación de un GridView control.
<%@ 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 CustomersGridView_DataBound(Object sender, EventArgs e)
{
// Get the header row.
GridViewRow headerRow = CustomersGridView.HeaderRow;
// Get the footer row.
GridViewRow footerRow = CustomersGridView.FooterRow;
// Set the font color of the header and footer rows
// based on the sort direction.
switch (CustomersGridView.SortDirection)
{
case SortDirection.Ascending:
headerRow.ForeColor = System.Drawing.Color.Green;
footerRow.ForeColor = System.Drawing.Color.Green;
break;
case SortDirection.Descending:
headerRow.ForeColor = System.Drawing.Color.Red;
footerRow.ForeColor = System.Drawing.Color.Red;
break;
default:
headerRow.ForeColor = System.Drawing.Color.Black;
footerRow.ForeColor = System.Drawing.Color.Black;
break;
}
// Display the sort order in the footer row.
footerRow.Cells[0].Text = "Sort Order = " + CustomersGridView.SortDirection.ToString();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>GridView HeaderRow and FooterRow Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>GridView HeaderRow and FooterRow Example</h3>
<asp:gridview id="CustomersGridView"
datasourceid="CustomersSource"
autogeneratecolumns="true"
emptydatatext="No data available."
allowsorting="true"
allowpaging="true"
showheader="true"
showfooter="true"
ondatabound="CustomersGridView_DataBound"
runat="server">
<headerstyle backcolor="LightCyan"
forecolor="MediumBlue"/>
<footerstyle backcolor="LightCyan"
forecolor="MediumBlue"/>
</asp:gridview>
<!-- 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="CustomersSource"
selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</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 CustomersGridView_DataBound(ByVal sender As Object, ByVal e As EventArgs)
' Get the header row.
Dim headerRow As GridViewRow = CustomersGridView.HeaderRow
' Get the footer row.
Dim footerRow As GridViewRow = CustomersGridView.FooterRow
' Set the font color of the header and footer rows
' based on the sort direction.
Select Case CustomersGridView.SortDirection
Case SortDirection.Ascending
headerRow.ForeColor = System.Drawing.Color.Green
footerRow.ForeColor = System.Drawing.Color.Green
Case SortDirection.Descending
headerRow.ForeColor = System.Drawing.Color.Red
footerRow.ForeColor = System.Drawing.Color.Red
Case Else
headerRow.ForeColor = System.Drawing.Color.Black
footerRow.ForeColor = System.Drawing.Color.Black
End Select
' Display the sort order in the footer row.
footerRow.Cells(0).Text = "Sort Order = " & CustomersGridView.SortDirection.ToString()
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>GridView HeaderRow and FooterRow Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>GridView HeaderRow and FooterRow Example</h3>
<asp:gridview id="CustomersGridView"
datasourceid="CustomersSource"
autogeneratecolumns="true"
emptydatatext="No data available."
allowsorting="true"
allowpaging="true"
showheader="true"
showfooter="true"
ondatabound="CustomersGridView_DataBound"
runat="server">
<headerstyle backcolor="LightCyan"
forecolor="MediumBlue"/>
<footerstyle backcolor="LightCyan"
forecolor="MediumBlue"/>
</asp:gridview>
<!-- 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="CustomersSource"
selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</form>
</body>
</html>
Comentarios
Utilice la SortDirection propiedad para determinar si la columna que se ordena se ordena en orden ascendente o descendente.
Nota
El GridView control tiene una característica de ordenación integrada que establece automáticamente esta propiedad. Esta propiedad se usa normalmente solo cuando se necesita determinar mediante programación la dirección de ordenación o cuando se agrega su propia funcionalidad de ordenación personalizada a un GridView control.