ButtonColumn.DataTextField 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 nama bidang dari sumber data ke ikatan ke ButtonColumn objek.
public:
virtual property System::String ^ DataTextField { System::String ^ get(); void set(System::String ^ value); };public virtual string DataTextField { get; set; }member this.DataTextField : string with get, setPublic Overridable Property DataTextField As StringNilai Properti
Nama bidang yang akan diikat ke ButtonColumn. Defaultnya adalah string kosong ("").
Contoh
Contoh kode berikut menunjukkan cara menggunakan DataTextField properti untuk mengikat ButtonColumn objek ke bidang di sumber data.
<%@ 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">
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 < 9; 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)
{
// Load this data only once.
ItemsGrid.DataSource= CreateDataSource();
ItemsGrid.DataBind();
}
}
void Grid_CartCommand(Object sender, DataGridCommandEventArgs e)
{
// e.Item is the table row where the command is raised.
// For bound columns, the value is stored in the Text property of the TableCell.
Label1.Text = "You selected: " + e.Item.Cells[0].Text + ".";
}
</script>
<head runat="server">
<title>ButtonColumn Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>ButtonColumn Example</h3>
<b>Product List</b>
<asp:DataGrid id="ItemsGrid"
BorderColor="black"
BorderWidth="1"
CellPadding="3"
AutoGenerateColumns="false"
OnItemCommand="Grid_CartCommand"
runat="server">
<HeaderStyle BackColor="#00aaaa">
</HeaderStyle>
<Columns>
<asp:BoundColumn
HeaderText="Item"
DataField="StringValue"/>
<asp:ButtonColumn
HeaderText="Price"
ButtonType="PushButton"
DataTextField="CurrencyValue"
DataTextFormatString="{0:C}"
CommandName="AddToCart" />
</Columns>
</asp:DataGrid>
<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">
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 8
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)
CreateDataSource = dv
End Function 'CreateDataSource
Sub Page_Load(sender As Object, e As EventArgs)
If Not IsPostBack Then
' Load this data only once.
ItemsGrid.DataSource = CreateDataSource()
ItemsGrid.DataBind()
End If
End Sub 'Page_Load
Sub Grid_CartCommand(sender As Object, e As DataGridCommandEventArgs)
' e.Item is the table row where the command is raised.
' For bound columns, the value is stored in the Text property of the TableCell.
Label1.Text = "You selected: " + e.Item.Cells(0).Text + "."
End Sub 'Grid_CartCommand
</script>
<head runat="server">
<title>ButtonColumn Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>ButtonColumn Example</h3>
<b>Product List</b>
<asp:DataGrid id="ItemsGrid"
BorderColor="black"
BorderWidth="1"
CellPadding="3"
AutoGenerateColumns="false"
OnItemCommand="Grid_CartCommand"
runat="server">
<HeaderStyle BackColor="#00aaaa">
</HeaderStyle>
<Columns>
<asp:BoundColumn
HeaderText="Item"
DataField="StringValue"/>
<asp:ButtonColumn
HeaderText="Price"
ButtonType="PushButton"
DataTextField="CurrencyValue"
DataTextFormatString="{0:C}"
CommandName="AddToCart" />
</Columns>
</asp:DataGrid>
<br /><br />
<asp:Label id="Label1" runat="server"/>
</form>
</body>
</html>
Keterangan
DataTextField Gunakan properti untuk menentukan nama bidang dari sumber data untuk mengikat properti Text tombol dalam ButtonColumn objek.
Mengikat kolom ke bidang alih-alih langsung mengatur Text properti memungkinkan Anda menampilkan keterangan yang berbeda untuk tombol di ButtonColumn dengan menggunakan nilai di bidang yang ditentukan.
Nilai properti ini disimpan dalam status tampilan.
