FormView.DeleteItem Método
Definição
Importante
Algumas informações dizem respeito a um produto pré-lançado que pode ser substancialmente modificado antes de ser lançado. A Microsoft não faz garantias, de forma expressa ou implícita, em relação à informação aqui apresentada.
Apaga o registo atual no FormView controlo da fonte de dados.
public:
virtual void DeleteItem();public virtual void DeleteItem();abstract member DeleteItem : unit -> unit
override this.DeleteItem : unit -> unitPublic Overridable Sub DeleteItem ()Exemplos
O exemplo seguinte demonstra como usar o DeleteItem método para eliminar programaticamente o registo atual num FormView controlo a partir da fonte de dados.
<%@ 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 DeleteButton_Click(Object sender, EventArgs e)
{
// Use the DeleteItem method to programmatically delete
// the current record in the FormView control.
EmployeeFormView.DeleteItem();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>FormView DeleteItem Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>FormView DeleteItem Example</h3>
<asp:formview id="EmployeeFormView"
datasourceid="EmployeeSource"
allowpaging="true"
datakeynames="EmployeeID"
runat="server">
<itemtemplate>
<table>
<tr>
<td>
<asp:image id="EmployeeImage"
imageurl='<%# Eval("PhotoPath") %>'
alternatetext='<%# Eval("LastName") %>'
runat="server"/>
</td>
<td>
<h3><%# Eval("FirstName") %> <%# Eval("LastName") %></h3>
<%# Eval("Title") %>
</td>
</tr>
</table>
</itemtemplate>
</asp:formview>
<hr/>
<asp:Button id="DeleteButton"
text="Delete Record"
onclick="DeleteButton_Click"
runat="server"/>
<!-- 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="EmployeeSource"
selectcommand="Select [EmployeeID], [LastName], [FirstName], [Title], [PhotoPath] From [Employees]"
deletecommand="Delete [Employees] Where [EmployeeID]=@EmployeeID"
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 DeleteButton_Click(ByVal sender As Object, ByVal e As EventArgs)
' Use the DeleteItem method to programmatically delete
' the current record in the FormView control.
EmployeeFormView.DeleteItem()
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>FormView DeleteItem Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>FormView DeleteItem Example</h3>
<asp:formview id="EmployeeFormView"
datasourceid="EmployeeSource"
allowpaging="true"
datakeynames="EmployeeID"
runat="server">
<itemtemplate>
<table>
<tr>
<td>
<asp:image id="EmployeeImage"
imageurl='<%# Eval("PhotoPath") %>'
alternatetext='<%# Eval("LastName") %>'
runat="server"/>
</td>
<td>
<h3><%# Eval("FirstName") %> <%# Eval("LastName") %></h3>
<%# Eval("Title") %>
</td>
</tr>
</table>
</itemtemplate>
</asp:formview>
<hr/>
<asp:Button id="DeleteButton"
text="Delete Record"
onclick="DeleteButton_Click"
runat="server"/>
<!-- 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="EmployeeSource"
selectcommand="Select [EmployeeID], [LastName], [FirstName], [Title], [PhotoPath] From [Employees]"
deletecommand="Delete [Employees] Where [EmployeeID]=@EmployeeID"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</form>
</body>
</html>
Observações
Use o DeleteItem método para eliminar programaticamente o registo atual no FormView controlo a partir da fonte de dados. Este método é comumente usado quando é necessário eliminar o registo atual de fora do FormView controlo, por exemplo, de um controlo diferente na página. Chamar este método também levanta os ItemDeleted eventos e ItemDeleting .