FormView.DeleteItem Metod
Definition
Viktigt
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Tar bort den aktuella posten i FormView kontrollen från datakällan.
public:
virtual void DeleteItem();public virtual void DeleteItem();abstract member DeleteItem : unit -> unit
override this.DeleteItem : unit -> unitPublic Overridable Sub DeleteItem ()Exempel
I följande exempel visas hur du använder DeleteItem metoden för att programmatiskt ta bort den aktuella posten i en FormView kontroll från datakällan.
<%@ 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>
Kommentarer
DeleteItem Använd metoden för att programmatiskt ta bort den aktuella posten i FormView kontrollen från datakällan. Den här metoden används ofta när du behöver ta bort den aktuella posten utanför FormView kontrollen, till exempel från en annan kontroll på sidan. Om du anropar den här metoden genereras ItemDeleted även händelserna och ItemDeleting .