DbDataAdapter.DeleteCommand Propiedad

Definición

Espacio de nombres:

System.Data.Common

Ensamblado:

System.Data.Common.dll

Source:

DbDataAdapter.cs

Obtiene o establece un comando para eliminar registros del conjunto de datos.

public:
 property System::Data::Common::DbCommand ^ DeleteCommand { System::Data::Common::DbCommand ^ get(); void set(System::Data::Common::DbCommand ^ value); };

[System.ComponentModel.Browsable(false)]
public System.Data.Common.DbCommand? DeleteCommand { get; set; }

[<System.ComponentModel.Browsable(false)>]
member this.DeleteCommand : System.Data.Common.DbCommand with get, set

Public Property DeleteCommand As DbCommand

Valor de propiedad

DbCommand

IDbCommand utilizado mientras opera Update(DataSet) para eliminar registros del origen de datos para filas eliminadas en el conjunto de datos.

Atributos

BrowsableAttribute

Ejemplos

En el ejemplo siguiente se crea la clase OleDbDataAdapter derivada y se establecen algunas de sus propiedades.

public static OleDbDataAdapter CreateCustomerAdapter(
    OleDbConnection connection)
{
    OleDbDataAdapter dataAdapter = new OleDbDataAdapter();
    OleDbCommand command;
    OleDbParameter parameter;

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

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

    dataAdapter.SelectCommand = command;

    // Create the DeleteCommand.
    command = new OleDbCommand(
        "DELETE * FROM Customers WHERE CustomerID = ?",
        connection);

    parameter = command.Parameters.Add(
        "CustomerID", OleDbType.Char, 5, "CustomerID");
    parameter.SourceVersion = DataRowVersion.Original;

    dataAdapter.DeleteCommand = command;

    return dataAdapter;
}

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

    Dim dataAdapter As New OleDbDataAdapter()
    Dim command As OleDbCommand
    Dim parameter As OleDbParameter

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

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

    dataAdapter.SelectCommand = command

    ' Create the DeleteCommand.
    command = New OleDbCommand( _
        "DELETE * FROM Customers WHERE CustomerID = ?", _
        connection)

    parameter = command.Parameters.Add( _
        "CustomerID", OleDbType.Char, 5, "CustomerID")
    parameter.SourceVersion = DataRowVersion.Original

    dataAdapter.DeleteCommand = command

    Return dataAdapter
End Function

Comentarios

Durante Update, si esta propiedad no está establecida y la información de clave principal está presente en DataSet, se DeleteCommand genera automáticamente .

Consulte también

• Manipular datos (ADO.NET)
• Objetos DbProviderFactory (ADO.NET)
• Información general de ADO.NET