DbDataAdapter.DeleteCommand Propiedad

Definición

Obtiene o establece un comando para eliminar registros del conjunto de datos.Gets or sets a command for deleting records from the data set.

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)]
public System.Data.Common.DbCommand DeleteCommand { get; set; }
[<System.ComponentModel.Browsable(false)>]
member this.DeleteCommand : System.Data.Common.DbCommand with get, set
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.An IDbCommand used during Update(DataSet) to delete records in the data source for deleted rows in the data set.

Atributos

Ejemplos

En el ejemplo siguiente se crea la clase derivada OleDbDataAdapter y se establecen algunas de sus propiedades.The following example creates the derived class OleDbDataAdapter and sets some of its properties.

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 no se establece esta propiedad y la información de clave principal está presente en DataSet , DeleteCommand se genera automáticamente.During Update, if this property is not set and primary key information is present in the DataSet, the DeleteCommand is automatically generated.

Se aplica a