Repeater.ItemDataBound Kejadian
Definisi
Penting
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Terjadi setelah item dalam Repeater kontrol terikat data tetapi sebelum dirender di halaman.
public:
event System::Web::UI::WebControls::RepeaterItemEventHandler ^ ItemDataBound;
public event System.Web.UI.WebControls.RepeaterItemEventHandler ItemDataBound;
member this.ItemDataBound : System.Web.UI.WebControls.RepeaterItemEventHandler
Public Custom Event ItemDataBound As RepeaterItemEventHandler
Jenis Acara
Contoh
Contoh berikut menunjukkan cara menentukan dan mengkodekan handler untuk ItemDataBound peristiwa Repeater kontrol. Data dimodifikasi setelah terikat ke item dalam Repeater kontrol tetapi sebelum dirender di halaman.
<%@ Page Language="C#" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>OnItemDataBound Example</title>
<script language="C#" runat="server">
void Page_Load(Object Sender, EventArgs e) {
if (!IsPostBack) {
ArrayList values = new ArrayList();
values.Add(new Evaluation("Razor Wiper Blades", "Good"));
values.Add(new Evaluation("Shoe-So-Soft Softening Polish", "Poor"));
values.Add(new Evaluation("DynaSmile Dental Fixative", "Fair"));
Repeater1.DataSource = values;
Repeater1.DataBind();
}
}
void R1_ItemDataBound(Object Sender, RepeaterItemEventArgs e) {
// This event is raised for the header, the footer, separators, and items.
// Execute the following logic for Items and Alternating Items.
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) {
if (((Evaluation)e.Item.DataItem).Rating == "Good") {
((Label)e.Item.FindControl("RatingLabel")).Text= "<b>***Good***</b>";
}
}
}
public class Evaluation {
private string productid;
private string rating;
public Evaluation(string productid, string rating) {
this.productid = productid;
this.rating = rating;
}
public string ProductID {
get {
return productid;
}
}
public string Rating {
get {
return rating;
}
}
}
</script>
</head>
<body>
<h3>OnItemDataBound Example</h3>
<form id="form1" runat="server">
<br />
<asp:Repeater id="Repeater1" OnItemDataBound="R1_ItemDataBound" runat="server">
<HeaderTemplate>
<table border="1">
<tr>
<td><b>Product</b></td>
<td><b>Consumer Rating</b></td>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td> <asp:Label Text='<%# DataBinder.Eval(Container.DataItem, "ProductID") %>' Runat="server"/> </td>
<td> <asp:Label id="RatingLabel" Text='<%# DataBinder.Eval(Container.DataItem, "Rating") %>' Runat="server"/> </td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
<br />
</form>
</body>
</html>
<%@ Page Language="VB" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script language="VB" runat="server">
Sub Page_Load(Sender As Object, e As EventArgs)
If Not IsPostBack Then
Dim values As New ArrayList()
values.Add(New Evaluation("Razor Wiper Blades", "Good"))
values.Add(New Evaluation("Shoe-So-Soft Softening Polish", "Poor"))
values.Add(New Evaluation("DynaSmile Dental Fixative", "Fair"))
Repeater1.DataSource = values
Repeater1.DataBind()
End If
End Sub
Sub R1_ItemDataBound(Sender As Object, e As RepeaterItemEventArgs)
' This event is raised for the header, the footer, separators, and items.
' Execute the following logic for Items and Alternating Items.
If (e.Item.ItemType = ListItemType.Item) Or _
(e.Item.ItemType = ListItemType.AlternatingItem) Then
If CType(e.Item.DataItem, Evaluation).Rating = "Good" Then
CType(e.Item.FindControl("RatingLabel"), Label).Text = _
"<b>***Good***</b>"
End If
End If
End Sub
Public Class Evaluation
Private myProductid As String
Private myRating As String
Public Sub New(newProductid As String, newRating As String)
Me.myProductid = newProductid
Me.myRating = newRating
End Sub
Public ReadOnly Property ProductID() As String
Get
Return myProductid
End Get
End Property
Public ReadOnly Property Rating() As String
Get
Return myRating
End Get
End Property
End Class
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>OnItemDataBound Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>OnItemDataBound Example</h3>
<br />
<asp:Repeater id="Repeater1" OnItemDataBound="R1_ItemDataBound" runat="server">
<HeaderTemplate>
<table border="1">
<tr>
<td><b>Product</b></td>
<td><b>Consumer Rating</b></td>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td> <asp:Label Text='<%# DataBinder.Eval(Container.DataItem, "ProductID") %>' Runat="server"/> </td>
<td> <asp:Label id="RatingLabel" Text='<%# DataBinder.Eval(Container.DataItem, "Rating") %>' Runat="server"/> </td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
<br />
</form>
</body>
</html>
Keterangan
Kejadian ini dimunculkan ketika item dalam Repeater kontrol terikat data.
Untuk informasi selengkapnya tentang cara menangani peristiwa, lihat Menangani dan Menaikkan Peristiwa.