DbDataAdapter.UpdateCommand Property

Definition

Obtiene o establece un comando que se utiliza para actualizar registros en el origen de datos.Gets or sets a command used to update records in the data source.

public:
 property System::Data::Common::DbCommand ^ UpdateCommand { System::Data::Common::DbCommand ^ get(); void set(System::Data::Common::DbCommand ^ value); };
[System.ComponentModel.Browsable(false)]
public System.Data.Common.DbCommand UpdateCommand { get; set; }
member this.UpdateCommand : System.Data.Common.DbCommand with get, set
Public Property UpdateCommand As DbCommand

Property Value

DbCommand

Interfaz IDbCommand utilizada mientras opera Update(DataSet) para actualizar registros del origen de datos para filas modificadas en el conjunto de datos.A IDbCommand used during Update(DataSet) to update records in the data source for modified rows in the data set.

Attributes

Examples

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 conn)
{
  OleDbDataAdapter da = new OleDbDataAdapter();
  OleDbCommand cmd;
  OleDbParameter parm;

  // Create the SelectCommand.

  cmd = new OleDbCommand("SELECT * FROM Customers " +
                       "WHERE Country = @Country AND City = @City", conn);

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

  da.SelectCommand = cmd;

  // Create the UpdateCommand.

  cmd = new OleDbCommand("UPDATE Customers SET CustomerID = @CustomerID, CompanyName = @CompanyName " +
                       "WHERE CustomerID = @oldCustomerID", conn);

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

  parm = cmd.Parameters.Add("@oldCustomerID", OleDbType.Char, 5, "CustomerID");
  parm.SourceVersion = DataRowVersion.Original;

  da.UpdateCommand = cmd;

  return da;
}
Public Shared Function CreateCustomerAdapter(conn As OleDbConnection) As OleDbDataAdapter 
  
  Dim da As New OleDbDataAdapter()
  Dim cmd As OleDbCommand
  Dim parm As OleDbParameter

  ' Create the SelectCommand.

  cmd = New OleDbCommand("SELECT * FROM Customers " & _
                       "WHERE Country = @Country AND City = @City", conn)

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

  da.SelectCommand = cmd

  ' Create the UpdateCommand.

  cmd = New OleDbCommand("UPDATE Customers SET CustomerID = @CustomerID, CompanyName = @CompanyName " & _
                       "WHERE CustomerID = @oldCustomerID", conn)

  cmd.Parameters.Add("@CustomerID", OleDbType.Char, 5, "CustomerID")
  cmd.Parameters.Add("@CompanyName", OleDbType.VarChar, 40, "CompanyName")

  parm = cmd.Parameters.Add("@oldCustomerID", OleDbType.Char, 5, "CustomerID")
  parm.SourceVersion = DataRowVersion.Original

  da.UpdateCommand = cmd

  Return da
End Function

Remarks

Durante Update, si no se establece esta propiedad y la información de clave principal está presente en el DataSet, el UpdateCommand se generará automáticamente.During Update, if this property is not set and primary key information is present in the DataSet, the UpdateCommand will be automatically generated.

Applies to

See also