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OleDbDataAdapter.SelectCommand Properti

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Definisi

Ruang nama:
System.Data.OleDb
Rakitan:
System.Data.OleDb.dll
Rakitan:
System.Data.dll
Paket:
System.Data.OleDb v8.0.0
Paket:
System.Data.OleDb v9.0.0-preview.5.24306.7
Sumber:
OleDbDataAdapter.cs
Sumber:
OleDbDataAdapter.cs
Sumber:
OleDbDataAdapter.cs
Sumber:
OleDbDataAdapter.cs

Mendapatkan atau mengatur pernyataan SQL atau prosedur tersimpan yang digunakan untuk memilih rekaman di sumber data.

public:
 property System::Data::OleDb::OleDbCommand ^ SelectCommand { System::Data::OleDb::OleDbCommand ^ get(); void set(System::Data::OleDb::OleDbCommand ^ value); };
public System.Data.OleDb.OleDbCommand? SelectCommand { get; set; }
[System.Data.DataSysDescription("DbDataAdapter_SelectCommand")]
public System.Data.OleDb.OleDbCommand SelectCommand { get; set; }
public System.Data.OleDb.OleDbCommand SelectCommand { get; set; }
member this.SelectCommand : System.Data.OleDb.OleDbCommand with get, set
[<System.Data.DataSysDescription("DbDataAdapter_SelectCommand")>]
member this.SelectCommand : System.Data.OleDb.OleDbCommand with get, set
Public Property SelectCommand As OleDbCommand

Nilai Properti

OleDbCommand

OleDbCommand Yang digunakan selama Fill(DataSet) memilih rekaman dari sumber data untuk penempatan di DataSet.

Atribut
DataSysDescriptionAttribute

Contoh

Contoh berikut membuat OleDbDataAdapter dan mengatur SelectCommand properti dan InsertCommand . Ini mengasumsikan bahwa Anda telah membuat OleDbConnection objek.

public static OleDbDataAdapter CreateCustomerAdapter(
    OleDbConnection connection)
{
    OleDbDataAdapter adapter = new OleDbDataAdapter();
    OleDbCommand command;

    // Create the SelectCommand.
    command = new OleDbCommand("SELECT * FROM Customers " +
        "WHERE Country = ? AND City = ?", connection);

    command.Parameters.Add("Country", OleDbType.VarChar, 15);
    command.Parameters.Add("City", OleDbType.VarChar, 15);

    adapter.SelectCommand = command;

    // Create the InsertCommand.
    command = new OleDbCommand(
        "INSERT INTO Customers (CustomerID, CompanyName) " +
        "VALUES (?, ?)", connection);

    command.Parameters.Add(
        "CustomerID", OleDbType.Char, 5, "CustomerID");
    command.Parameters.Add(
        "CompanyName", OleDbType.VarChar, 40, "CompanyName");

    adapter.InsertCommand = command;
    return adapter;
}

Public Shared Function CreateCustomerAdapter( _
    connection As OleDbConnection) As OleDbDataAdapter 

    Dim adapter As New OleDbDataAdapter()
    Dim command As OleDbCommand

    ' Create the SelectCommand.
    command = New OleDbCommand("SELECT * FROM Customers " & _
        "WHERE Country = ? AND City = ?", connection)

    command.Parameters.Add("Country", OleDbType.VarChar, 15)
    command.Parameters.Add("City", OleDbType.VarChar, 15)

    adapter.SelectCommand = command

    ' Create the InsertCommand.
    command = New OleDbCommand( _
        "INSERT INTO Customers (CustomerID, CompanyName) " & _
        "VALUES (?, ?)", connection)

    command.Parameters.Add( _
        "CustomerID", OleDbType.Char, 5, "CustomerID")
    command.Parameters.Add( _
        "CompanyName", OleDbType.VarChar, 40, "CompanyName")

    adapter.InsertCommand = command
    Return adapter
End Function

Keterangan

Ketika SelectCommand ditetapkan ke yang dibuat OleDbCommandsebelumnya , OleDbCommand tidak dikloning. SelectCommand mempertahankan referensi ke objek yang dibuat OleDbCommand sebelumnya.

SelectCommand Jika tidak mengembalikan baris, tidak ada tabel yang ditambahkan ke DataSet, dan tidak ada pengecualian yang dimunculkan.

Berlaku untuk

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