DetailsViewDeleteEventArgs.Values Properti
Definisi
Penting
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Mendapatkan kamus pasangan nama/nilai bidang non-kunci untuk item yang akan dihapus.
public:
property System::Collections::Specialized::IOrderedDictionary ^ Values { System::Collections::Specialized::IOrderedDictionary ^ get(); };public System.Collections.Specialized.IOrderedDictionary Values { get; }member this.Values : System.Collections.Specialized.IOrderedDictionaryPublic ReadOnly Property Values As IOrderedDictionaryNilai Properti
IOrderedDictionary yang berisi kamus pasangan nama/nilai bidang non-kunci untuk item yang akan dihapus.
Contoh
Contoh kode berikut menunjukkan cara menggunakan Values properti untuk mengakses nilai bidang non-kunci rekaman yang sedang dihapus.
<%@ 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 CustomerDetailsView_ItemDeleting(Object sender,
DetailsViewDeleteEventArgs e)
{
// Get customer ID and name from the Keys and Values
// properties.
String keyValue = e.Keys["CustomerID"].ToString();
String customerName = e.Values["CompanyName"].ToString();
// Cancel the delete operation if the user attempts to
// delete protected record. In this example, records
// with a customer ID that starts with with "A" cannot
// be deleted.
if (keyValue.StartsWith("A"))
{
e.Cancel = true;
MessageLabel.Text = "You cannot delete " +
customerName + ". This customer is protected.";
}
else
{
MessageLabel.Text = "Row " + e.RowIndex.ToString() +
" deleted.";
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>DetailsViewDeleteEventArgs Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>DetailsViewDeleteEventArgs Example</h3>
<asp:detailsview id="CustomerDetailsView"
datasourceid="DetailsViewSource"
datakeynames="CustomerID"
autogeneratedeletebutton="true"
autogeneraterows="true"
allowpaging="true"
onitemdeleting="CustomerDetailsView_ItemDeleting"
runat="server">
<fieldheaderstyle backcolor="Navy"
forecolor="White"/>
</asp:detailsview>
<asp:label id="MessageLabel"
forecolor="Red"
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="DetailsViewSource"
selectcommand="Select [CustomerID], [CompanyName], [Address],
[City], [PostalCode], [Country] From [Customers]"
deletecommand="Delete [Customers]
Where [CustomerID]=@CustomerID"
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 CustomerDetailsView_ItemDeleting(ByVal sender As Object, _
ByVal e As DetailsViewDeleteEventArgs)
' Get customer ID and name from the Keys and Values
' properties.
Dim keyValue As String = e.Keys("CustomerID").ToString()
Dim customerName As String = e.Values("CompanyName").ToString()
' Cancel the delete operation if the user attempts to
' delete protected record. In this example, records
' with a customer ID that starts with with "A" cannot
' be deleted.
If keyValue.StartsWith("A") Then
e.Cancel = True
MessageLabel.Text = "You cannot delete " & _
customerName & ". This customer is protected."
Else
MessageLabel.Text = "Row " & e.RowIndex.ToString() & _
" deleted."
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>DetailsViewDeleteEventArgs Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>DetailsViewDeleteEventArgs Example</h3>
<asp:detailsview id="CustomerDetailsView"
datasourceid="DetailsViewSource"
datakeynames="CustomerID"
autogeneratedeletebutton="true"
autogeneraterows="true"
allowpaging="true"
onitemdeleting="CustomerDetailsView_ItemDeleting"
runat="server">
<fieldheaderstyle backcolor="Navy"
forecolor="White"/>
</asp:detailsview>
<asp:label id="MessageLabel"
forecolor="Red"
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="DetailsViewSource"
selectcommand="Select [CustomerID], [CompanyName], [Address],
[City], [PostalCode], [Country] From [Customers]"
deletecommand="Delete [Customers]
Where [CustomerID]=@CustomerID"
connectionstring=
"<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</form>
</body>
</html>
Keterangan
Values Gunakan properti untuk mengakses nilai bidang non-kunci agar rekaman dihapus. Misalnya, Anda dapat menggunakan nilai-nilai ini untuk memverifikasi rekaman sebelum menghapusnya, atau untuk menyimpan log rekaman yang dihapus.
Nota
Properti ini tidak berisi bidang kunci atau bidang. Untuk mengakses nilai pasangan nama/nilai untuk bidang atau bidang kunci, gunakan Keys properti .
Properti Values mengembalikan objek yang mengimplementasikan IOrderedDictionary antarmuka. Objek berisi DictionaryEntry objek yang mewakili bidang non-kunci.
Nota
Sebagai pintasan, Anda juga dapat menggunakan pengindeks IOrderedDictionary objek untuk mengakses nilai bidang. Keuntungan dalam menggunakan pengindeks adalah mengembalikan nilai bidang secara langsung.
