OleDbDataAdapter.InsertCommand Propriedade

Definição

Obtém ou define uma instrução SQL ou um procedimento armazenado usado para inserir novos registros na fonte de dados.Gets or sets an SQL statement or stored procedure used to insert new records into the data source.

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

Valor da propriedade

Um OleDbCommand usado durante o Update(DataSet) para inserir registros na fonte de dados que correspondem às novas linhas no DataSet.An OleDbCommand used during Update(DataSet) to insert records in the data source that correspond to new rows in the DataSet.

Atributos

Exemplos

O exemplo a seguir cria OleDbDataAdapter um e define SelectCommand as InsertCommand Propriedades e.The following example creates an OleDbDataAdapter and sets the SelectCommand and InsertCommand properties. Ele pressupõe que você já criou um OleDbConnection objeto.It assumes that you have already created an OleDbConnection object.

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

    // 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);

    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 CustomerID 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

Comentários

Durante Update, se essa propriedade não for definida e as informações de chave primária estiverem presentes DataSetno, InsertCommand o poderá ser gerado automaticamente se você definir SelectCommand a propriedade e usar OleDbCommandBuildero.During Update, if this property is not set and primary key information is present in the DataSet, the InsertCommand can be generated automatically if you set the SelectCommand property and use the OleDbCommandBuilder. Em seguida, os comandos adicionais que você não definir serão gerados pelo OleDbCommandBuilder.Then, any additional commands that you do not set are generated by the OleDbCommandBuilder. Esta lógica de geração requer que as informações da coluna principal estejam presente no DataSet.This generation logic requires key column information to be present in the DataSet. Para obter mais informações, consulte gerando comandos com CommandBuilders.For more information, see Generating Commands with CommandBuilders.

Quando InsertCommand é atribuído a um criado OleDbCommandanteriormente, o OleDbCommand não é clonado.When InsertCommand is assigned to a previously created OleDbCommand, the OleDbCommand is not cloned. O InsertCommand mantém uma referência ao objeto criado OleDbCommand anteriormente.The InsertCommand maintains a reference to the previously created OleDbCommand object.

Observação

Se a execução desse comando retornar linhas, essas linhas poderão ser adicionadas ao DataSet dependendo de como você define a UpdatedRowSource Propriedade do OleDbCommand objeto.If execution of this command returns rows, these rows may be added to the DataSet depending on how you set the UpdatedRowSource property of the OleDbCommand object.

Aplica-se a

Veja também