GridViewRow.RowState 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 lo stato dell'oggetto GridViewRow.
public:
virtual property System::Web::UI::WebControls::DataControlRowState RowState { System::Web::UI::WebControls::DataControlRowState get(); void set(System::Web::UI::WebControls::DataControlRowState value); };public virtual System.Web.UI.WebControls.DataControlRowState RowState { get; set; }member this.RowState : System.Web.UI.WebControls.DataControlRowState with get, setPublic Overridable Property RowState As DataControlRowStateValore della proprietà
Combinazione bit per bit dei valori di DataControlRowState.
Esempio
Nell'esempio seguente viene illustrato come utilizzare la RowState proprietà per determinare se una riga è in modalità di modifica o è selezionata. Se l'utente seleziona una riga diversa mentre il GridView controllo è in modalità di modifica, il controllo esce dalla GridView modalità di modifica.
<%@ 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 AuthorsGridView_SelectedIndexChanged(Object sender, EventArgs e)
{
// Get the selected row.
GridViewRow row = AuthorsGridView.SelectedRow;
// Check the row state. If the row is not in edit mode and is selected,
// exit edit mode. This ensures that the GridView control exits edit mode
// when a user selects a different row while the GridView control is in
// edit mode. Notice that the DataControlRowState enumeration is a flag
// enumeration, which means that you can combine values using bitwise
// operations.
if(row.RowState != (DataControlRowState.Edit|DataControlRowState.Selected))
{
AuthorsGridView.EditIndex = -1;
}
}
void AuthorsGridView_RowEditing(Object sender, GridViewEditEventArgs e)
{
// Get the row being edited.
GridViewRow row = AuthorsGridView.Rows[e.NewEditIndex];
// Check the row state. If the row is not in edit mode and is selected,
// select the current row. This ensures that the GridView control selects
// the current row when the user clicks the Edit button.
if(row.RowState != (DataControlRowState.Edit|DataControlRowState.Selected))
{
AuthorsGridView.SelectedIndex = e.NewEditIndex;
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>GridViewRow RowState Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>GridViewRow RowState Example</h3>
<!-- The GridView control automatically sets the columns -->
<!-- specified in the datakeynames attribute as read-only -->
<!-- No input controls are rendered for these columns in -->
<!-- edit mode. -->
<asp:gridview id="AuthorsGridView"
datasourceid="AuthorsSqlDataSource"
autogeneratecolumns="false"
autogenerateeditbutton="true"
autogenerateselectbutton="true"
datakeynames="au_id"
cellpadding="10"
onselectedindexchanged="AuthorsGridView_SelectedIndexChanged"
onrowediting="AuthorsGridView_RowEditing"
runat="server">
<selectedrowstyle backcolor="Yellow"/>
<columns>
<asp:boundfield datafield="au_lname"
headertext="Last Name"/>
<asp:boundfield datafield="au_fname"
headertext="First Name"/>
</columns>
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Pubs sample database. -->
<asp:sqldatasource id="AuthorsSqlDataSource"
selectcommand="SELECT [au_id], [au_lname], [au_fname] FROM [authors]"
updatecommand="UPDATE authors SET au_lname=@au_lname, au_fname=@au_fname WHERE (authors.au_id = @au_id)"
connectionstring="server=localhost;database=pubs;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">
Sub AuthorsGridView_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs)
' Get the selected row.
Dim row As GridViewRow = AuthorsGridView.SelectedRow
' Check the row state. If the row is not in edit mode and is selected,
' exit edit mode. This ensures that the GridView control exits edit mode
' when a user selects a different row while the GridView control is in
' edit mode. Notice that the DataControlRowState enumeration is a flag
' enumeration, which means that you can combine values using bitwise
' operations.
If row.RowState <> (DataControlRowState.Edit Or DataControlRowState.Selected) Then
AuthorsGridView.EditIndex = -1
End If
End Sub
Sub AuthorsGridView_RowEditing(ByVal sender As Object, ByVal e As GridViewEditEventArgs)
' Get the row being edited.
Dim row As GridViewRow = AuthorsGridView.Rows(e.NewEditIndex)
' Check the row state. If the row is not in edit mode and is selected,
' select the current row. This ensures that the GridView control selects
' the current row when the user clicks the Edit button.
If row.RowState <> (DataControlRowState.Edit Or DataControlRowState.Selected) Then
AuthorsGridView.SelectedIndex = e.NewEditIndex
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>GridViewRow RowState Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>GridViewRow RowState Example</h3>
<!-- The GridView control automatically sets the columns -->
<!-- specified in the datakeynames attribute as read-only -->
<!-- No input controls are rendered for these columns in -->
<!-- edit mode. -->
<asp:gridview id="AuthorsGridView"
datasourceid="AuthorsSqlDataSource"
autogeneratecolumns="false"
autogenerateeditbutton="true"
autogenerateselectbutton="true"
datakeynames="au_id"
cellpadding="10"
onselectedindexchanged="AuthorsGridView_SelectedIndexChanged"
onrowediting="AuthorsGridView_RowEditing"
runat="server">
<selectedrowstyle backcolor="Yellow"/>
<columns>
<asp:boundfield datafield="au_lname"
headertext="Last Name"/>
<asp:boundfield datafield="au_fname"
headertext="First Name"/>
</columns>
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Pubs sample database. -->
<asp:sqldatasource id="AuthorsSqlDataSource"
selectcommand="SELECT [au_id], [au_lname], [au_fname] FROM [authors]"
updatecommand="UPDATE authors SET au_lname=@au_lname, au_fname=@au_fname WHERE (authors.au_id = @au_id)"
connectionstring="server=localhost;database=pubs;integrated security=SSPI"
runat="server">
</asp:sqldatasource>
</form>
</body>
</html>
Commenti
Utilizzare la RowType proprietà per determinare lo stato dell'oggetto GridViewRow . Lo stato può essere una combinazione bit per bit dei valori nella tabella seguente:
| Valore di stato | Descrizione |
|---|---|
DataControlRowState.Alternate |
L'oggetto GridViewRow è una riga alternativa nel GridView controllo . |
DataControlRowState.Edit |
L'oggetto GridViewRow è in modalità di modifica. |
DataControlRowState.Normal |
L'oggetto GridViewRow si trova nello stato normale (predefinito). |
DataControlRowState.Selected |
L'oggetto GridViewRow è selezionato. |
Questa proprietà viene comunemente utilizzata per determinare lo stato di una riga prima di eseguire un'operazione.