Bagikan melalui

AccessDataSource Konstruktor

  • Referensi

Definisi

Ruang nama:
System.Web.UI.WebControls
Rakitan:
System.Web.dll

Menginisialisasi instans baru kelas AccessDataSource.

Overload

AccessDataSource()

Menginisialisasi instans baru kelas AccessDataSource.
AccessDataSource(String, String)

Menginisialisasi instans AccessDataSource baru kelas dengan jalur file data yang ditentukan dan perintah Pilih .

AccessDataSource()

Menginisialisasi instans baru kelas AccessDataSource.

public:
 AccessDataSource();
public AccessDataSource ();
Public Sub New ()

Contoh

Contoh kode berikut menunjukkan cara menggunakan AccessDataSource konstruktor untuk membuat kontrol sumber data baru AccessDataSource dan mengikat CheckBoxList kontrol ke data dalam database Microsoft Access.

<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
private void Page_Load(Object sender, EventArgs e) {

  // Create the AccessDataSource.
  AccessDataSource accessDS = new AccessDataSource();
  accessDS.SelectCommand = "SELECT SupplierID, CompanyName " +
                           " FROM Suppliers WHERE Country ='Germany'";
  accessDS.DataFile = "~/App_Data/Northwind.mdb";

  // Add the AccessDataSource to the Page.Controls collection.
  Page.Controls.Add(accessDS);

  // In programmatic scenarios, use the DataSource
  // property, not the DataSourceID property. The Select method
  // returns an IEnumerable list of data items.
  CheckBoxList1.DataSource = accessDS;

  // Explicitly call DataBind.
  CheckBoxList1.DataBind();
}
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <asp:CheckBoxList
        id="CheckBoxList1"
        runat="server"
        DataTextField="CompanyName"
        DataValueField="SupplierID">
      </asp:CheckBoxList>

    </form>
  </body>
</html>

<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

  ' Create the AccessDataSource.
  Dim accessDS As New AccessDataSource()
  accessDS.SelectCommand = "SELECT SupplierID, CompanyName " & _
                           " FROM Suppliers WHERE Country ='Germany'"
  accessDS.DataFile = "~/App_Data/Northwind.mdb"

  ' Add the AccessDataSource to the Page.Controls collection.
  Page.Controls.Add(accessDS)

  ' In programmatic scenarios, use the DataSource
  ' property, not the DataSourceID property. The Select method
  ' returns an IEnumerable list of data items.
  CheckBoxList1.DataSource = accessDS

  ' Explicitly call DataBind.
  CheckBoxList1.DataBind()

End Sub 'Page_Load
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <asp:CheckBoxList
        id="CheckBoxList1"
        runat="server"
        DataTextField="CompanyName"
        DataValueField="SupplierID">
      </asp:CheckBoxList>

    </form>
  </body>
</html>

Lihat juga

Berlaku untuk

AccessDataSource(String, String)

Menginisialisasi instans AccessDataSource baru kelas dengan jalur file data yang ditentukan dan perintah Pilih .

public:
 AccessDataSource(System::String ^ dataFile, System::String ^ selectCommand);
public AccessDataSource (string dataFile, string selectCommand);
new System.Web.UI.WebControls.AccessDataSource : string * string -> System.Web.UI.WebControls.AccessDataSource
Public Sub New (dataFile As String, selectCommand As String)

Parameter

dataFile
String

Lokasi file Access .mdb. Lokasi dapat relatif terhadap folder formulir Web saat ini, jalur fisik absolut, atau jalur virtual.

selectCommand
String

Kueri SQL yang digunakan untuk mengambil data dari database Access. Jika kueri SQL adalah string SQL berparameter, tambahkan Parameter objek ke SelectParameters koleksi.

Pengecualian

ArgumentNullException

dataFile adalah null atau string kosong.

Contoh

Contoh kode berikut menunjukkan cara menggunakan AccessDataSource konstruktor untuk membuat kontrol sumber data baru AccessDataSource dan mengikat CheckBoxList kontrol ke data dalam database Microsoft Access.

<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
private void Page_Load(Object sender, EventArgs e) {

  // Create AccessDataSource
  AccessDataSource accessDS =
    new AccessDataSource("~/App_Data/Northwind.mdb",
                         "SELECT SupplierID, CompanyName " +
                         " FROM Suppliers WHERE Country ='Germany'");

  // Add the AccessDataSource to the Page.Controls collection
  Page.Controls.Add(accessDS);

  // In programmatic scenarios, use the DataSource
  // property, not the DataSourceID property. The Select method
  // returns an IEnumerable list of data items.
  CheckBoxList1.DataSource = accessDS;

  // Explicitly call DataBind
  CheckBoxList1.DataBind();
}
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <asp:CheckBoxList
        id="CheckBoxList1"
        runat="server"
        DataTextField="CompanyName"
        DataValueField="SupplierID">
      </asp:CheckBoxList>

    </form>
  </body>
</html>

<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

  ' Create AccessDataSource
  Dim accessDS As New AccessDataSource("~/App_Data/Northwind.mdb", _
                                       "SELECT SupplierID, CompanyName " & _
                                      " FROM Suppliers WHERE Country ='Germany'")

  ' Add the AccessDataSource to the Page.Controls collection
  Page.Controls.Add(accessDS)

  ' In programmatic scenarios, use the DataSource
  ' property, not the DataSourceID property. The Select method
  ' returns an IEnumerable list of data items.
  CheckBoxList1.DataSource = accessDS

  ' Explicitly call DataBind
  CheckBoxList1.DataBind()

End Sub 'Page_Load
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <asp:CheckBoxList
        id="CheckBoxList1"
        runat="server"
        DataTextField="CompanyName"
        DataValueField="SupplierID">
      </asp:CheckBoxList>

    </form>
  </body>
</html>

Lihat juga

Berlaku untuk