GridViewRow.RowState Propriedade
Definição
Importante
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Obtém o estado do objeto 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 DataControlRowStateValor da propriedade
Uma combinação bit a bit dos valores DataControlRowState.
Exemplos
O exemplo a seguir demonstra como usar a RowState propriedade para determinar se uma linha está no modo de edição ou se está selecionada. Se o usuário selecionar uma linha diferente enquanto o GridView controle estiver no modo de edição, o controle sairá do GridView modo de edição.
<%@ 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>
Comentários
Use a RowType propriedade para determinar o estado do GridViewRow objeto. O estado pode ser uma combinação bit a bit dos valores na tabela a seguir:
| Valor de status | Descrição |
|---|---|
DataControlRowState.Alternate |
O GridViewRow objeto é uma linha alternativa no GridView controle. |
DataControlRowState.Edit |
O GridViewRow objeto está no modo de edição. |
DataControlRowState.Normal |
O GridViewRow objeto está em seu estado normal (padrão). |
DataControlRowState.Selected |
O GridViewRow objeto está selecionado. |
Essa propriedade é comumente usada para determinar o estado de uma linha antes de executar uma operação.