RepeaterItem.ItemIndex Propiedad
Definición
Importante
Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.
public:
virtual property int ItemIndex { int get(); };
public virtual int ItemIndex { get; }
member this.ItemIndex : int
Public Overridable ReadOnly Property ItemIndex As Integer
Valor de propiedad
Índice del elemento del control Repeater de la colección Items del control.
Ejemplos
En el ejemplo siguiente se muestra cómo usar la ItemIndex propiedad para mostrar el número de índice del elemento en el Repeater control de la Items colección del control.
<%@ Page Language="C#" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
<!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>Repeater Example</title>
<script language="C#" runat="server">
void Page_Load(Object Sender, EventArgs e)
{
if (!IsPostBack)
{
ArrayList values = new ArrayList();
values.Add(new PositionData("Item 1", "$6.00"));
values.Add(new PositionData("Item 2", "$7.48"));
values.Add(new PositionData("Item 3", "$9.96"));
Repeater1.DataSource = values;
Repeater1.DataBind();
}
}
void Button_Click(Object Sender, EventArgs e)
{
Label1.Text = "The Items collection contains: <br />";
foreach(RepeaterItem item in Repeater1.Items)
{
Label1.Text += item.ItemIndex.ToString() + " - " +
((DataBoundLiteralControl)item.Controls[0]).Text +
"<br />";
}
}
public class PositionData
{
private string item;
private string price;
public PositionData(string item, string price)
{
this.item = item;
this.price = price;
}
public string Item
{
get
{
return item;
}
}
public string Price
{
get
{
return price;
}
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<h3>Repeater Example</h3>
<br />
<asp:Repeater id="Repeater1"
runat="server">
<HeaderTemplate>
<table border="1">
<tr>
<td><b>Item</b></td>
<td><b>Price</b></td>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td> <%# DataBinder.Eval(Container.DataItem, "Item") %> </td>
<td> <%# DataBinder.Eval(Container.DataItem, "Price") %> </td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
<br />
<asp:Button id="Button1"
Text="Display Items in Repeater"
OnClick="Button_Click"
runat="server"/>
<br /><br />
<asp:Label id="Label1"
runat="server"/>
</form>
</body>
</html>
<%@ Page Language="VB" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
<!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>Repeater Example</title>
<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 PositionData("Item 1", "$6.00"))
values.Add(New PositionData("Item 2", "$7.48"))
values.Add(New PositionData("Item 3", "$9.96"))
Repeater1.DataSource = values
Repeater1.DataBind()
End If
End Sub
Sub Button_Click(Sender As Object, e As EventArgs)
Label1.Text = "The Items collection contains: <br />"
Dim item As RepeaterItem
For Each item In Repeater1.Items
Label1.Text &= item.ItemIndex.ToString() & " - " & _
CType(item.Controls(0), DataBoundLiteralControl).Text & "<br />"
Next item
End Sub
Public Class PositionData
Private myItem As String
Private myPrice As String
Public Sub New(newItem As String, newPrice As String)
Me.myItem = newItem
Me.myPrice = newPrice
End Sub
Public ReadOnly Property Item() As String
Get
Return myItem
End Get
End Property
Public ReadOnly Property Price() As String
Get
Return myPrice
End Get
End Property
End Class
</script>
</head>
<body>
<form id="form1" runat="server">
<h3>Repeater Example</h3>
<br />
<asp:Repeater id="Repeater1"
runat="server">
<HeaderTemplate>
<table border="1">
<tr>
<td><b>Item</b></td>
<td><b>Price</b></td>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td> <%# DataBinder.Eval(Container.DataItem, "Item") %> </td>
<td> <%# DataBinder.Eval(Container.DataItem, "Price") %> </td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
<br />
<asp:Button id="Button1"
Text="Display Items in Repeater"
OnClick="Button_Click"
runat="server"/>
<br /><br />
<asp:Label id="Label1"
runat="server"/>
</form>
</body>
</html>
Comentarios
Utilice la ItemIndex propiedad para determinar el número de índice del elemento del Repeater control de la Items colección del control.
Nota
Esta propiedad solo se aplica a los elementos de datos del Repeater control . La ItemType propiedad debe establecerse en ListItemType.Item
, ListItemType.AlternatingItem
, ListItemType.SelectedItem
o ListItemType.EditItem
.