DetailsView.ItemUpdated Gebeurtenis
Definitie
Belangrijk
Bepaalde informatie heeft betrekking op een voorlopige productversie die aanzienlijk kan worden gewijzigd voordat deze wordt uitgebracht. Microsoft biedt geen enkele expliciete of impliciete garanties met betrekking tot de informatie die hier wordt verstrekt.
Treedt op wanneer op een knop Bijwerken in een DetailsView besturingselement wordt geklikt, maar na de updatebewerking.
public:
event System::Web::UI::WebControls::DetailsViewUpdatedEventHandler ^ ItemUpdated;public event System.Web.UI.WebControls.DetailsViewUpdatedEventHandler ItemUpdated;member this.ItemUpdated : System.Web.UI.WebControls.DetailsViewUpdatedEventHandler Public Custom Event ItemUpdated As DetailsViewUpdatedEventHandler Gebeurtenistype
Voorbeelden
In het volgende codevoorbeeld ziet u hoe u de ItemUpdated gebeurtenis gebruikt om een GridView besturingselement te vernieuwen nadat een DetailsView besturingselement een updatebewerking heeft uitgevoerd. Hierdoor blijft het GridView besturingselement gesynchroniseerd met het DetailsView besturingselement.
<%@ 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 CustomerDetail_ItemInserted(object sender,
DetailsViewInsertedEventArgs e)
{
// Refresh the GridView control after a new record is inserted
// in the DetailsView control.
CustomersView.DataBind();
}
void CustomerDetail_ItemInserting(object sender,
DetailsViewInsertEventArgs e)
{
// Iterate though the values entered by the user and HTML encode
// the values. This helps prevent malicious values from being
// stored in the data source.
for (int i = 0; i < e.Values.Count; i++)
{
if (e.Values[i] != null)
{
e.Values[i] = Server.HtmlEncode(e.Values[i].ToString());
}
}
}
void CustomerDetail_ItemUpdated(object sender,
DetailsViewUpdatedEventArgs e)
{
// Refresh the GridView control after a new record is updated
// in the DetailsView control.
CustomersView.DataBind();
}
void CustomerDetail_ItemUpdating(object sender,
DetailsViewUpdateEventArgs e)
{
// Iterate though the values entered by the user and HTML encode
// the values. This helps prevent malicious values from being
// stored in the data source.
for (int i = 0; i < e.NewValues.Count; i++)
{
if (e.NewValues[i] != null)
{
e.NewValues[i] = Server.HtmlEncode(e.NewValues[i].ToString());
}
}
}
void CustomerDetail_ItemDeleted(object sender,
DetailsViewDeletedEventArgs e)
{
// Refresh the GridView control after a new record is updated
// in the DetailsView control.
CustomersView.DataBind();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>
DetailsView Example</title>
</head>
<body>
<form id="Form1" runat="server">
<h3>
DetailsView Example</h3>
<table cellspacing="10">
<tr>
<td>
<!-- Use a GridView control in combination with -->
<!-- a DetailsView control to display master-detail -->
<!-- information. When the user selects a store from -->
<!-- GridView control, the customers//s detailed -->
<!-- information is displayed in the DetailsView -->
<!-- control. -->
<asp:GridView ID="CustomersView" DataSourceID="Customers"
AutoGenerateColumns="False"
DataKeyNames="CustomerID" runat="server">
<HeaderStyle BackColor="Blue" ForeColor="White" />
<Columns>
<asp:CommandField ShowSelectButton="True" />
<asp:BoundField DataField="ContactName"
HeaderText="ContactName" />
<asp:BoundField DataField="CompanyName"
HeaderText="CompanyName" />
</Columns>
</asp:GridView>
</td>
<td valign="top">
<asp:DetailsView ID="CustomerDetail"
DataSourceID="Details" AutoGenerateRows="false"
AutoGenerateInsertButton="true"
AutoGenerateEditButton="true"
AutoGenerateDeleteButton="true"
EmptyDataText="No records."
DataKeyNames="CustomerID" GridLines="Both"
OnItemInserted="CustomerDetail_ItemInserted"
OnItemInserting="CustomerDetail_ItemInserting"
OnItemUpdated="CustomerDetail_ItemUpdated"
OnItemUpdating="CustomerDetail_ItemUpdating"
OnItemDeleted="CustomerDetail_ItemDeleted"
runat="server">
<HeaderStyle BackColor="Navy" ForeColor="White" />
<RowStyle BackColor="White" />
<AlternatingRowStyle BackColor="LightGray" />
<EditRowStyle BackColor="LightCyan" />
<Fields>
<asp:BoundField DataField="CustomerID" HeaderText="CustomerID" ReadOnly="True" />
<asp:BoundField DataField="ContactName" HeaderText="ContactName" />
<asp:BoundField DataField="ContactTitle" HeaderText="ContactTitle" />
<asp:BoundField DataField="CompanyName" HeaderText="CompanyName" />
<asp:BoundField DataField="Address" HeaderText="Address" />
<asp:BoundField DataField="City" HeaderText="City" />
<asp:BoundField DataField="Region" HeaderText="Region" />
<asp:BoundField DataField="PostalCode" HeaderText="PostalCode" />
<asp:BoundField DataField="Country" HeaderText="Country" />
<asp:BoundField DataField="Phone" HeaderText="Phone" />
<asp:BoundField DataField="Fax" HeaderText="Fax" />
</Fields>
</asp:DetailsView>
</td>
</tr>
</table>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. -->
<!-- It is strongly recommended that each data-bound -->
<!-- control uses a separate data source control. -->
<asp:SqlDataSource ID="Customers" runat="server"
ConnectionString=
"<%$ ConnectionStrings:NorthwindConnectionString %>"
SelectCommand="SELECT [CompanyName], [ContactName], [CustomerID]
FROM [Customers]">
</asp:SqlDataSource>
<!-- Add a filter to the data source control for the -->
<!-- DetailsView control to display the details of the -->
<!-- store selected in the GridView control. -->
<asp:SqlDataSource ID="Details"
ConnectionString=
"<%$ ConnectionStrings:NorthwindConnectionString %>"
runat="server"
SelectCommand="SELECT * FROM [Customers]
WHERE ([CustomerID] = @CustomerID)"
DeleteCommand="DELETE FROM [Customers]
WHERE [CustomerID] = @CustomerID"
InsertCommand="INSERT INTO [Customers] ([CustomerID],
[CompanyName], [ContactName], [ContactTitle], [Address],
[City], [Region], [PostalCode], [Country], [Phone], [Fax])
VALUES (@CustomerID, @CompanyName, @ContactName, @ContactTitle,
@Address, @City, @Region, @PostalCode, @Country, @Phone, @Fax)"
UpdateCommand="UPDATE [Customers] SET [CompanyName] = @CompanyName,
[ContactName] = @ContactName, [ContactTitle] = @ContactTitle,
[Address] = @Address, [City] = @City, [Region] = @Region,
[PostalCode] = @PostalCode, [Country] = @Country,
[Phone] = @Phone, [Fax] = @Fax
WHERE [CustomerID] = @CustomerID">
<SelectParameters>
<asp:ControlParameter ControlID="CustomersView"
Name="CustomerID" PropertyName="SelectedValue"
Type="String" />
</SelectParameters>
<DeleteParameters>
<asp:Parameter Name="CustomerID" Type="String" />
</DeleteParameters>
<UpdateParameters>
<asp:Parameter Name="CompanyName" Type="String" />
<asp:Parameter Name="ContactName" Type="String" />
<asp:Parameter Name="ContactTitle" Type="String" />
<asp:Parameter Name="Address" Type="String" />
<asp:Parameter Name="City" Type="String" />
<asp:Parameter Name="Region" Type="String" />
<asp:Parameter Name="PostalCode" Type="String" />
<asp:Parameter Name="Country" Type="String" />
<asp:Parameter Name="Phone" Type="String" />
<asp:Parameter Name="Fax" Type="String" />
<asp:Parameter Name="CustomerID" Type="String" />
</UpdateParameters>
<InsertParameters>
<asp:Parameter Name="CustomerID" Type="String" />
<asp:Parameter Name="CompanyName" Type="String" />
<asp:Parameter Name="ContactName" Type="String" />
<asp:Parameter Name="ContactTitle" Type="String" />
<asp:Parameter Name="Address" Type="String" />
<asp:Parameter Name="City" Type="String" />
<asp:Parameter Name="Region" Type="String" />
<asp:Parameter Name="PostalCode" Type="String" />
<asp:Parameter Name="Country" Type="String" />
<asp:Parameter Name="Phone" Type="String" />
<asp:Parameter Name="Fax" Type="String" />
</InsertParameters>
</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 CustomerDetail_ItemInserted(ByVal sender As Object, _
ByVal e As DetailsViewInsertedEventArgs)
' Refresh the GridView control after a new record is inserted in
' the DetailsView control.
CustomersView.DataBind()
End Sub
Sub CustomerDetail_ItemInserting(ByVal sender As Object, _
ByVal e As DetailsViewInsertEventArgs)
' Iterate though the values entered by the user and HTML encode
' the values. This helps prevent malicious values from being
' stored in the data source.
For i As Integer = 0 To e.Values.Count - 1
If e.Values(i) IsNot Nothing Then
e.Values(i) = Server.HtmlEncode(e.Values(i).ToString())
End If
Next
End Sub
Sub CustomerDetail_ItemUpdated(ByVal sender As Object, _
ByVal e As DetailsViewUpdatedEventArgs)
' Refresh the GridView control after a new record is updated
' in the DetailsView control.
CustomersView.DataBind()
End Sub
Sub CustomerDetail_ItemUpdating(ByVal sender As Object, _
ByVal e As DetailsViewUpdateEventArgs)
' Iterate though the values entered by the user and HTML encode
' the values. This helps prevent malicious values from being
' stored in the data source.
For i As Integer = 0 To e.NewValues.Count - 1
If e.NewValues(i) IsNot Nothing Then
e.NewValues(i) = Server.HtmlEncode(e.NewValues(i).ToString())
End If
Next
End Sub
Sub CustomerDetail_ItemDeleted(ByVal sender As Object, _
ByVal e As DetailsViewDeletedEventArgs)
' Refresh the GridView control after a new record is updated
' in the DetailsView control.
CustomersView.DataBind()
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>DetailsView Example</title>
</head>
<body>
<form id="Form1" runat="server">
<h3>DetailsView Example</h3>
<table cellspacing="10">
<tr>
<td>
<!-- Use a GridView control in combination with -->
<!-- a DetailsView control to display master-detail -->
<!-- information. When the user selects a store from -->
<!-- GridView control, the customers's detailed -->
<!-- information is displayed in the DetailsView -->
<!-- control. -->
<asp:GridView ID="CustomersView" DataSourceID="Customers"
AutoGenerateColumns="False"
DataKeyNames="CustomerID" runat="server">
<HeaderStyle BackColor="Blue" ForeColor="White" />
<Columns>
<asp:CommandField ShowSelectButton="True" />
<asp:BoundField DataField="ContactName"
HeaderText="ContactName" />
<asp:BoundField DataField="CompanyName"
HeaderText="CompanyName" />
</Columns>
</asp:GridView>
</td>
<td valign="top">
<asp:DetailsView ID="CustomerDetail" DataSourceID="Details"
AutoGenerateRows="false"
AutoGenerateInsertButton="true"
AutoGenerateEditButton="true"
AutoGenerateDeleteButton="true"
EmptyDataText="No records."
DataKeyNames="CustomerID" GridLines="Both"
OnItemInserted="CustomerDetail_ItemInserted"
OnItemInserting="CustomerDetail_ItemInserting"
OnItemUpdated="CustomerDetail_ItemUpdated"
OnItemUpdating="CustomerDetail_ItemUpdating"
OnItemDeleted="CustomerDetail_ItemDeleted"
runat="server">
<HeaderStyle BackColor="Navy" ForeColor="White" />
<RowStyle BackColor="White" />
<AlternatingRowStyle BackColor="LightGray" />
<EditRowStyle BackColor="LightCyan" />
<Fields>
<asp:BoundField DataField="CustomerID" HeaderText="CustomerID"
ReadOnly="True" />
<asp:BoundField DataField="ContactName" HeaderText="ContactName" />
<asp:BoundField DataField="ContactTitle" HeaderText="ContactTitle" />
<asp:BoundField DataField="CompanyName" HeaderText="CompanyName" />
<asp:BoundField DataField="Address" HeaderText="Address" />
<asp:BoundField DataField="City" HeaderText="City" />
<asp:BoundField DataField="Region" HeaderText="Region" />
<asp:BoundField DataField="PostalCode" HeaderText="PostalCode" />
<asp:BoundField DataField="Country" HeaderText="Country" />
<asp:BoundField DataField="Phone" HeaderText="Phone" />
<asp:BoundField DataField="Fax" HeaderText="Fax" />
</Fields>
</asp:DetailsView>
</td>
</tr>
</table>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. -->
<!-- It is strongly recommended that each data-bound -->
<!-- control uses a separate data source control. -->
<asp:SqlDataSource ID="Customers" runat="server"
ConnectionString=
"<%$ ConnectionStrings:NorthwindConnectionString %>"
SelectCommand="SELECT [CompanyName], [ContactName], [CustomerID]
FROM [Customers]">
</asp:SqlDataSource>
<!-- Add a filter to the data source control for the -->
<!-- DetailsView control to display the details of the -->
<!-- store selected in the GridView control. -->
<asp:SqlDataSource ID="Details"
ConnectionString=
"<%$ ConnectionStrings:NorthwindConnectionString %>"
runat="server"
SelectCommand="SELECT * FROM [Customers]
WHERE ([CustomerID] = @CustomerID)"
DeleteCommand="DELETE FROM [Customers]
WHERE [CustomerID] = @CustomerID"
InsertCommand="INSERT INTO [Customers] ([CustomerID],
[CompanyName], [ContactName], [ContactTitle], [Address],
[City], [Region], [PostalCode], [Country], [Phone], [Fax])
VALUES (@CustomerID, @CompanyName, @ContactName,
@ContactTitle, @Address, @City, @Region, @PostalCode,
@Country, @Phone, @Fax)"
UpdateCommand="UPDATE [Customers] SET
[CompanyName] = @CompanyName,
[ContactName] = @ContactName, [ContactTitle] = @ContactTitle,
[Address] = @Address, [City] = @City, [Region] = @Region,
[PostalCode] = @PostalCode, [Country] = @Country,
[Phone] = @Phone, [Fax] = @Fax
WHERE [CustomerID] = @CustomerID">
<SelectParameters>
<asp:ControlParameter ControlID="CustomersView"
Name="CustomerID" PropertyName="SelectedValue"
Type="String" />
</SelectParameters>
<DeleteParameters>
<asp:Parameter Name="CustomerID" Type="String" />
</DeleteParameters>
<UpdateParameters>
<asp:Parameter Name="CompanyName" Type="String" />
<asp:Parameter Name="ContactName" Type="String" />
<asp:Parameter Name="ContactTitle" Type="String" />
<asp:Parameter Name="Address" Type="String" />
<asp:Parameter Name="City" Type="String" />
<asp:Parameter Name="Region" Type="String" />
<asp:Parameter Name="PostalCode" Type="String" />
<asp:Parameter Name="Country" Type="String" />
<asp:Parameter Name="Phone" Type="String" />
<asp:Parameter Name="Fax" Type="String" />
<asp:Parameter Name="CustomerID" Type="String" />
</UpdateParameters>
<InsertParameters>
<asp:Parameter Name="CustomerID" Type="String" />
<asp:Parameter Name="CompanyName" Type="String" />
<asp:Parameter Name="ContactName" Type="String" />
<asp:Parameter Name="ContactTitle" Type="String" />
<asp:Parameter Name="Address" Type="String" />
<asp:Parameter Name="City" Type="String" />
<asp:Parameter Name="Region" Type="String" />
<asp:Parameter Name="PostalCode" Type="String" />
<asp:Parameter Name="Country" Type="String" />
<asp:Parameter Name="Phone" Type="String" />
<asp:Parameter Name="Fax" Type="String" />
</InsertParameters>
</asp:SqlDataSource>
</form>
</body>
</html>
Opmerkingen
De ItemUpdated gebeurtenis wordt gegenereerd wanneer op een knop Bijwerken in het DetailsView besturingselement wordt geklikt, maar na de updatebewerking. Hiermee kunt u een gebeurtenishandler opgeven die een aangepaste routine uitvoert, zoals het controleren van de resultaten van de updatebewerking wanneer deze gebeurtenis plaatsvindt.
Er wordt een DetailsViewUpdatedEventArgs object doorgegeven aan de gebeurtenis-handler, waarmee u het aantal betrokken rijen en eventuele uitzonderingen kunt bepalen. U kunt ook aangeven of de uitzondering is verwerkt in de gebeurtenis-handler door de eigenschap in te ExceptionHandled stellen. Als u het besturingselement in de bewerkingsmodus wilt houden na een updatebewerking, stelt u de KeepInEditMode eigenschap in op true.
Zie Gebeurtenissen verwerken en genereren voor meer informatie over het afhandelen van gebeurtenissen.
