DetailsView.ItemCreated Händelse
Definition
Viktigt
En del information gäller för förhandsversionen av en produkt och kan komma att ändras avsevärt innan produkten blir allmänt tillgänglig. Microsoft lämnar inga garantier, uttryckliga eller underförstådda, avseende informationen som visas här.
Inträffar när en post skapas i en DetailsView kontroll.
public:
event EventHandler ^ ItemCreated;public event EventHandler ItemCreated;member this.ItemCreated : EventHandler Public Custom Event ItemCreated As EventHandler Händelsetyp
Exempel
I följande kodexempel visas hur du använder ItemCreated händelsen för att uppdatera en anpassad sidrad med aktuell växlingsstatistik.
<%@ 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 CustomerDetailView_ItemCreated(Object sender, EventArgs e)
{
// Get the header row.
DetailsViewRow headerRow = CustomerDetailView.HeaderRow;
// Get the Label control that displays the current page information
// from the header row.
Label pageNum = (Label)headerRow.FindControl("PageNumberLabel");
if(pageNum != null)
{
// Update the Label control with the current page number.
int page = CustomerDetailView.DataItemIndex + 1;
pageNum.Text = "Page " + page.ToString ();
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>DetailsView HeaderTemplate Example</title>
</head>
<body>
<form id="Form1" runat="server">
<h3>DetailsView HeaderTemplate Example</h3>
<asp:detailsview id="CustomerDetailView"
datasourceid="DetailsViewSource"
datakeynames="CustomerID"
autogeneraterows="true"
allowpaging="true"
onitemcreated="CustomerDetailView_ItemCreated"
runat="server">
<headerstyle backcolor="Navy"
forecolor="White"/>
<pagersettings Mode="NextPreviousFirstLast"/>
<headertemplate>
<table width="100%">
<tr>
<td align="left">
<asp:Image id="LogoImage"
imageurl="~\images\Logo.jpg"
AlternateText="Our logo"
runat="server"/>
</td>
<td align="right" valign="bottom">
<asp:Label id="PageNumberLabel"
font-size="9"
forecolor="DodgerBlue"
runat="server"/>
</td>
</tr>
</table>
</headertemplate>
</asp:detailsview>
<!-- 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" runat="server"
ConnectionString=
"<%$ ConnectionStrings:NorthWindConnectionString%>"
InsertCommand="INSERT INTO [Customers]([CustomerID],
[CompanyName], [Address], [City], [PostalCode], [Country])
VALUES (@CustomerID, @CompanyName, @Address, @City,
@PostalCode, @Country)"
SelectCommand="Select [CustomerID], [CompanyName],
[Address], [City], [PostalCode], [Country] From
[Customers]">
</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 CustomerDetailView_ItemCreated(ByVal sender As Object, _
ByVal e As EventArgs)
' Get the header row.
Dim headerRow As DetailsViewRow = CustomerDetailView.HeaderRow
' Get the Label control that displays the current page information
' from the header row.
Dim pageNum As Label = _
CType(headerRow.FindControl("PageNumberLabel"), Label)
If Not pageNum Is Nothing Then
' Update the Label control with the current page number.
Dim page As Integer = CustomerDetailView.DataItemIndex + 1
pageNum.Text = "Page " & page.ToString()
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>DetailsView HeaderTemplate Example</title>
</head>
<body>
<form id="Form1" runat="server">
<h3>DetailsView HeaderTemplate Example</h3>
<asp:detailsview id="CustomerDetailView"
datasourceid="DetailsViewSource"
datakeynames="CustomerID"
autogeneraterows="true"
allowpaging="true"
onitemcreated="CustomerDetailView_ItemCreated"
runat="server">
<headerstyle backcolor="Navy"
forecolor="White"/>
<pagersettings Mode="NextPreviousFirstLast"/>
<headertemplate>
<table width="100%">
<tr>
<td align="left">
<asp:Image id="LogoImage"
imageurl="~\images\Logo.jpg"
AlternateText="Our logo"
runat="server"/>
</td>
<td align="right" valign="bottom">
<asp:Label id="PageNumberLabel"
font-size="9"
forecolor="DodgerBlue"
runat="server"/>
</td>
</tr>
</table>
</headertemplate>
</asp:detailsview>
<!-- 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" runat="server"
ConnectionString=
"<%$ ConnectionStrings:NorthWindConnectionString%>"
InsertCommand="INSERT INTO [Customers]([CustomerID],
[CompanyName], [Address], [City], [PostalCode], [Country])
VALUES (@CustomerID, @CompanyName, @Address, @City,
@PostalCode, @Country)"
SelectCommand="Select [CustomerID], [CompanyName],
[Address], [City], [PostalCode], [Country] From
[Customers]">
</asp:SqlDataSource>
</form>
</body>
</html>
Kommentarer
Händelsen ItemCreated utlöses varje gång en post skapas i en DetailsView kontroll. Detta kan inträffa när kontrollen återges först eller när användaren navigerar till en annan post. Du kan använda den här händelsen för att tillhandahålla en händelsehanterare som utför en anpassad rutin, till exempel att lägga till anpassat innehåll på en rad, när den här händelsen inträffar.
Du kan komma åt raderna sidhuvud, sidfot och sidhuvud i DetailsView kontrollen med hjälp HeaderRowav egenskaperna , FooterRow, TopPagerRowrespektive BottomPagerRow . Om du vill komma åt en av dataraderna använder du Rows samlingen.
Mer information om hur du hanterar händelser finns i Hantera och höja händelser.
