DbDataAdapter.DeleteCommand Propriedade

Definição

Namespace:

System.Data.Common

Assembly:

System.Data.Common.dll

Origem:

DbDataAdapter.cs

Obtém ou define um comando para excluir registros do conjunto de dados.

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 da propriedade

DbCommand

Um IDbCommand usado durante Update(DataSet) para excluir registros na fonte de dados para linhas excluídas no conjunto de dados.

Atributos

BrowsableAttribute

Exemplos

O exemplo a seguir cria a classe OleDbDataAdapter derivada e define algumas de suas propriedades.

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

Comentários

Durante Update, se essa propriedade não estiver definida e as informações de chave primária estiverem presentes no DataSet, o DeleteCommand será gerado automaticamente.

Confira também

• Manipulando dados (ADO.NET)
• DbProviderFactories (ADO.NET)
• Visão geral do ADO.NET