GridViewRow.RowType Proprietà
Definizione
Importante
Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.
Ottiene il tipo di riga dell'oggetto GridViewRow.
public:
virtual property System::Web::UI::WebControls::DataControlRowType RowType { System::Web::UI::WebControls::DataControlRowType get(); void set(System::Web::UI::WebControls::DataControlRowType value); };public virtual System.Web.UI.WebControls.DataControlRowType RowType { get; set; }member this.RowType : System.Web.UI.WebControls.DataControlRowType with get, setPublic Overridable Property RowType As DataControlRowTypeValore della proprietà
Uno dei valori di DataControlRowType.
Esempio
Nell'esempio seguente viene illustrato come utilizzare la RowType proprietà per determinare se una riga creata è una riga del piè di pagina. Se la riga è una riga del piè di pagina, il valore per la somma della colonna viene aggiornato nella riga del piè di pagina.
<%@ 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">
// Create a variable to store the order total.
private Decimal orderTotal = 0.0M;
void OrderGridView_RowCreated(Object sender, GridViewRowEventArgs e)
{
// Retrieve the current row.
GridViewRow row = e.Row;
// Update the column total if the row being created is
// a footer row.
if (row.RowType == DataControlRowType.Footer)
{
// Get the OrderTotalTotal Label control in the footer row.
Label total = (Label)e.Row.FindControl("OrderTotalLabel");
// Display the grand total of the order formatted as currency.
if (total != null)
{
total.Text = orderTotal.ToString("c");
}
}
}
void OrderGridView_RowDataBound(Object sender, GridViewRowEventArgs e)
{
// Retrieve the current row.
GridViewRow row = e.Row;
// Add the field value to the column total if the row being created is
// a data row.
if (row.RowType == DataControlRowType.DataRow)
{
// Get the cell that contains the item total.
TableCell cell = e.Row.Cells[2];
// Get the DataBoundLiteralControl control that contains the
// data bound value.
DataBoundLiteralControl boundControl = (DataBoundLiteralControl)cell.Controls[0];
// Remove the '$' character for the type converter to work properly.
String itemTotal = boundControl.Text.Replace("$", "");
// Add the total for an item (row) to the order total.
orderTotal += Convert.ToDecimal(itemTotal);
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>GridViewRow RowType Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>GridViewRow RowType Example</h3>
<!-- Populate the Columns collection declaratively. -->
<!-- Create a custom TemplateField column that uses -->
<!-- two Label controls to display an author's first and -->
<!-- last name in the same column. -->
<asp:gridview id="OrderGridView"
datasourceid="OrderSqlDataSource"
autogeneratecolumns="False"
showfooter="true"
onrowcreated="OrderGridView_RowCreated"
onrowdatabound="OrderGridView_RowDataBound"
runat="server">
<columns>
<asp:boundfield datafield="UnitPrice"
itemstyle-horizontalalign="Right"
headertext="Unit Price"
dataformatstring="{0:c}"/>
<asp:boundfield datafield="Quantity"
itemstyle-horizontalalign="Right"
headertext="Quantity"/>
<asp:templatefield headertext="Total"
itemstyle-horizontalalign="Right"
footerstyle-horizontalalign="Right"
footerstyle-backcolor="Blue"
footerstyle-forecolor="White">
<itemtemplate>
<%#Eval("Total", "{0:c}") %>
</itemtemplate>
<footertemplate>
<asp:label id="OrderTotalLabel"
runat="server"/>
</footertemplate>
</asp:templatefield>
</columns>
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. -->
<asp:sqldatasource id="OrderSqlDataSource"
selectcommand="SELECT [OrderID], [UnitPrice], [Quantity], [UnitPrice]*[Quantity] As [Total] FROM [order details] WHERE [OrderID]=10248"
connectionstring="server=localhost;database=northwind;integrated security=SSPI"
runat="server">
</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">
' Create a variable to store the order total.
Private orderTotal As Decimal = 0.0
Sub OrderGridView_RowCreated(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
' Retrieve the current row.
Dim row As GridViewRow = e.Row
' Update the column total if the row being created is
' a footer row.
If row.RowType = DataControlRowType.Footer Then
' Get the OrderTotalTotal Label control in the footer row.
Dim total As Label = CType(e.Row.FindControl("OrderTotalLabel"), Label)
' Display the grand total of the order formatted as currency.
If (Not total Is Nothing)
total.Text = orderTotal.ToString("c")
End If
End If
End Sub
Sub OrderGridView_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
' Retrieve the current row.
Dim row As GridViewRow = e.Row
' Add the field value to the column total if the row being created is
' a data row.
If row.RowType = DataControlRowType.DataRow Then
' Get the cell that contains the item total.
Dim cell As TableCell = e.Row.Cells(2)
' Get the DataBoundLiteralControl control that contains the
' data bound value.
Dim boundControl As DataBoundLiteralControl = CType(cell.Controls(0), DataBoundLiteralControl)
' Remove the '$' character for the type converter to work properly.
Dim itemTotal As String = boundControl.Text.Replace("$", "")
' Add the total for an item (row) to the order total.
orderTotal += Convert.ToDecimal(itemTotal)
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>GridViewRow RowType Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>GridViewRow RowType Example</h3>
<!-- Populate the Columns collection declaratively. -->
<!-- Create a custom TemplateField column that uses -->
<!-- two Label controls to display an author's first and -->
<!-- last name in the same column. -->
<asp:gridview id="OrderGridView"
datasourceid="OrderSqlDataSource"
autogeneratecolumns="False"
showfooter="true"
onrowcreated="OrderGridView_RowCreated"
onrowdatabound="OrderGridView_RowDataBound"
runat="server">
<columns>
<asp:boundfield datafield="UnitPrice"
itemstyle-horizontalalign="Right"
headertext="Unit Price"
dataformatstring="{0:c}"/>
<asp:boundfield datafield="Quantity"
itemstyle-horizontalalign="Right"
headertext="Quantity"/>
<asp:templatefield headertext="Total"
itemstyle-horizontalalign="Right"
footerstyle-horizontalalign="Right"
footerstyle-backcolor="Blue"
footerstyle-forecolor="White">
<itemtemplate>
<%#Eval("Total", "{0:c}") %>
</itemtemplate>
<footertemplate>
<asp:label id="OrderTotalLabel"
runat="server"/>
</footertemplate>
</asp:templatefield>
</columns>
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. -->
<asp:sqldatasource id="OrderSqlDataSource"
selectcommand="SELECT [OrderID], [UnitPrice], [Quantity], [UnitPrice]*[Quantity] As [Total] FROM [order details] WHERE [OrderID]=10248"
connectionstring="server=localhost;database=northwind;integrated security=SSPI"
runat="server">
</asp:sqldatasource>
</form>
</body>
</html>
Commenti
Utilizzare la RowType proprietà per determinare il tipo di riga rappresentato dall'oggetto GridViewRow . Nella tabella seguente sono elencati i diversi valori del tipo di riga usando l'enumerazione DataControlRowType .
| Tipo di riga | Descrizione |
|---|---|
| DataRow | Riga di dati nel GridView controllo . |
| Footer | Riga del piè di pagina nel GridView controllo . |
| Header | Riga di intestazione nel GridView controllo . |
| EmptyDataRow | Riga vuota nel GridView controllo . La riga vuota viene visualizzata quando GridView il controllo non dispone di record da visualizzare. |
| Pager | Riga del cercapersone nel GridView controllo . |
| Separator | Riga separatore nel GridView controllo . |
Questa proprietà viene comunemente utilizzata per determinare il tipo di una riga prima di eseguire un'operazione.