RepeaterItem.ItemIndex Propriedade
Definição
Importante
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public:
virtual property int ItemIndex { int get(); };public virtual int ItemIndex { get; }member this.ItemIndex : intPublic Overridable ReadOnly Property ItemIndex As IntegerValor da propriedade
O índice do item no controle Repeater da coleção Items do controle.
Exemplos
O exemplo a seguir demonstra como usar a ItemIndex propriedade para exibir o número de índice do item no Repeater controle da Items coleção do controle.
<%@ 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>
Comentários
Use a ItemIndex propriedade para determinar o número de índice do item no Repeater controle da Items coleção do controle.
Observação
Essa propriedade só se aplica a itens de dados no Repeater controle. A ItemType propriedade deve ser definida comoListItemType.Item, ListItemType.AlternatingItem``ListItemType.SelectedItemou ListItemType.EditItem.