DataGridItem.ItemIndex Properti
Definisi
Penting
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Mendapatkan indeks DataGridItem objek dari Items kumpulan DataGrid kontrol.
public:
virtual property int ItemIndex { int get(); };public virtual int ItemIndex { get; }member this.ItemIndex : intPublic Overridable ReadOnly Property ItemIndex As IntegerNilai Properti
Indeks dari DataGridItemItems kumpulan DataGrid kontrol.
Contoh
Contoh kode berikut menunjukkan cara menggunakan ItemIndex properti untuk menampilkan indeks DataGridItem objek dari Items kumpulan DataGrid kontrol.
Nota
Contoh kode berikut menggunakan model kode file tunggal dan mungkin tidak berfungsi dengan benar jika disalin langsung ke file code-behind. Contoh kode ini harus disalin ke dalam file teks kosong yang memiliki ekstensi .aspx. Untuk informasi selengkapnya tentang model kode Formulir Web, lihat Menangani dan Meningkatkan Peristiwa.
<%@ 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" >
<script language="C#" runat="server">
DataTable Cart;
DataView CartView;
ICollection CreateDataSource()
{
DataTable dt = new DataTable();
DataRow dr;
dt.Columns.Add(new DataColumn("IntegerValue", typeof(Int32)));
dt.Columns.Add(new DataColumn("StringValue", typeof(string)));
dt.Columns.Add(new DataColumn("CurrencyValue", typeof(double)));
for (int i = 0; i < 10; i++)
{
dr = dt.NewRow();
dr[0] = i;
dr[1] = "Item " + i.ToString();
dr[2] = 1.23 * (i+1);
dt.Rows.Add(dr);
}
DataView dv = new DataView(dt);
return dv;
}
void Page_Load(Object sender, EventArgs e)
{
if (!IsPostBack)
{
// Need to load this data only once.
ItemsGrid.DataSource = CreateDataSource();
ItemsGrid.DataBind();
}
}
void Button_Click(Object sender, EventArgs e)
{
Label1.Text = "The DataSetIndex of each item in the DataGrid are: <br />";
foreach (DataGridItem item in ItemsGrid.Items)
{
Label1.Text += "<br />" + item.ItemIndex.ToString() +
" - " + item.Cells[1].Text;
}
}
</script>
<head runat="server">
<title>DataGridItem ItemIndex Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>DataGridItem ItemIndex Example</h3>
<asp:DataGrid id="ItemsGrid" runat="server"
BorderColor="black"
BorderWidth="1"
CellPadding="3"
ShowFooter="true"
AutoGenerateColumns="true">
<HeaderStyle BackColor="#00aaaa">
</HeaderStyle>
<FooterStyle BackColor="#00aaaa">
</FooterStyle>
</asp:DataGrid>
<br />
<asp:Button id="Button1"
Text="Display ItemIndex of Items in DataGrid"
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" >
<script language="VB" runat="server">
Dim Cart As DataTable
Dim CartView As DataView
Function CreateDataSource() As ICollection
Dim dt As New DataTable()
Dim dr As DataRow
dt.Columns.Add(New DataColumn("IntegerValue", GetType(Int32)))
dt.Columns.Add(New DataColumn("StringValue", GetType(String)))
dt.Columns.Add(New DataColumn("CurrencyValue", GetType(Double)))
Dim i As Integer
For i = 0 To 9
dr = dt.NewRow()
dr(0) = i
dr(1) = "Item " & i.ToString()
dr(2) = 1.23 *(i + 1)
dt.Rows.Add(dr)
Next i
Dim dv As New DataView(dt)
Return dv
End Function 'CreateDataSource
Sub Page_Load(sender As Object, e As EventArgs)
If Not IsPostBack Then
' Need to load this data only once.
ItemsGrid.DataSource = CreateDataSource()
ItemsGrid.DataBind()
End If
End Sub 'Page_Load
Sub Button_Click(sender As Object, e As EventArgs)
Label1.Text = "The DataSetIndex of each item in the DataGrid are: <br />"
Dim item As DataGridItem
For Each item In ItemsGrid.Items
Label1.Text &= "<br />" & item.ItemIndex.ToString() & " - " & item.Cells(1).Text
Next item
End Sub 'Button_Click
</script>
<head runat="server">
<title>DataGridItem ItemIndex Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>DataGridItem ItemIndex Example</h3>
<asp:DataGrid id="ItemsGrid" runat="server"
BorderColor="black"
BorderWidth="1"
CellPadding="3"
ShowFooter="true"
AutoGenerateColumns="true">
<HeaderStyle BackColor="#00aaaa">
</HeaderStyle>
<FooterStyle BackColor="#00aaaa">
</FooterStyle>
</asp:DataGrid>
<br />
<asp:Button id="Button1"
Text="Display ItemIndex of Items in DataGrid"
OnClick="Button_Click"
runat="server"/>
<br /><br />
<asp:Label id="Label1"
runat="server"/>
</form>
</body>
</html>
Keterangan
ItemIndex Gunakan properti untuk menentukan indeks DataGridItem objek dari Items kumpulan DataGrid kontrol.
Nota
Properti ini hanya berlaku untuk item data dalam DataGrid kontrol. Properti ItemTypeDataGridItem objek harus diatur ke ListItemType.Item, , ListItemType.AlternatingItem, ListItemType.SelectedItematau ListItemType.EditItem.
