DataGridItem.DataItem Properti
Definisi
Penting
Beberapa informasi terkait produk prarilis yang dapat diubah secara signifikan sebelum dirilis. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.
Mendapatkan atau mengatur item data yang diwakili oleh DataGridItem objek dalam DataGrid kontrol.
public:
virtual property System::Object ^ DataItem { System::Object ^ get(); void set(System::Object ^ value); };public virtual object DataItem { get; set; }member this.DataItem : obj with get, setPublic Overridable Property DataItem As ObjectNilai Properti
Object Yang mewakili item data dalam DataGrid kontrol.
Contoh
Contoh kode berikut menunjukkan cara menggunakan DataItem properti untuk menampilkan konten item data dalam 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.
<%@ 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 Item_Created(Object sender, DataGridItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item ||
e.Item.ItemType == ListItemType.AlternatingItem ||
e.Item.ItemType == ListItemType.SelectedItem ||
e.Item.ItemType == ListItemType.EditItem)
{
Label1.Text += "<br />" + e.Item.ItemType.ToString() +
" - " + ((DataRowView)e.Item.DataItem).Row.ItemArray[1].ToString();
}
else
{
Label1.Text += "<br />" + e.Item.ItemType.ToString();
}
}
</script>
<head runat="server">
<title>DataGridItem DataItem Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>DataGridItem DataItem Example</h3>
<asp:DataGrid id="ItemsGrid" runat="server"
BorderColor="black"
BorderWidth="1"
CellPadding="3"
ShowFooter="true"
OnItemCreated="Item_Created"
AutoGenerateColumns="true">
<HeaderStyle BackColor="#00aaaa">
</HeaderStyle>
<FooterStyle BackColor="#00aaaa">
</FooterStyle>
</asp:DataGrid>
<br />
<asp:Label id="Label1"
Text="Items in the DataGrid Control: <br />"
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 Item_Created(sender As Object, e As DataGridItemEventArgs)
If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem Or e.Item.ItemType = ListItemType.SelectedItem Or e.Item.ItemType = ListItemType.EditItem Then
Label1.Text &= "<br />" & e.Item.ItemType.ToString() & " - " & CType(e.Item.DataItem, DataRowView).Row.ItemArray(1).ToString()
Else
Label1.Text &= "<br />" & e.Item.ItemType.ToString()
End If
End Sub 'Item_Created
</script>
<head runat="server">
<title>DataGridItem DataItem Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>DataGridItem DataItem Example</h3>
<asp:DataGrid id="ItemsGrid" runat="server"
BorderColor="black"
BorderWidth="1"
CellPadding="3"
ShowFooter="true"
OnItemCreated="Item_Created"
AutoGenerateColumns="true">
<HeaderStyle BackColor="#00aaaa">
</HeaderStyle>
<FooterStyle BackColor="#00aaaa">
</FooterStyle>
</asp:DataGrid>
<br />
<asp:Label id="Label1"
Text="Items in the DataGrid Control: <br />"
runat="server"/>
</form>
</body>
</html>
Keterangan
DataItem Gunakan properti untuk menentukan atau menentukan properti item data yang diwakili oleh DataGridItem objek dalam DataGrid kontrol.
Nota
Properti ini hanya berlaku untuk item data dalam DataGrid kontrol. Properti ItemType harus diatur ke ListItemType.Item, ListItemType.AlternatingItem, ListItemType.SelectedItem, atau ListItemType.EditItem.
