OracleDataAdapter Costruttori
Definizione
Importante
Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.
Inizializza una nuova istanza della classe OracleDataAdapter.
Overload
OracleDataAdapter() |
Inizializza una nuova istanza della classe OracleDataAdapter. |
OracleDataAdapter(OracleCommand) |
Inizializza una nuova istanza della classe OracleDataAdapter con l'istruzione SQL SELECT specificata. |
OracleDataAdapter(String, OracleConnection) |
Inizializza una nuova istanza della classe OracleDataAdapter con un'istruzione SQL SELECT e una classe OracleConnection. |
OracleDataAdapter(String, String) |
Inizializza una nuova istanza della classe OracleDataAdapter con un'istruzione SQL SELECT e una stringa di connessione. |
OracleDataAdapter()
Inizializza una nuova istanza della classe OracleDataAdapter.
public:
OracleDataAdapter();
public OracleDataAdapter ();
Public Sub New ()
Esempio
Nell'esempio seguente viene creato un oggetto OracleDataAdapter e vengono impostate alcune delle relative proprietà.
Public Sub CreateOracleDataAdapter()
Dim myOracleConnection As OracleConnection = New OracleConnection("Data Source=Oracle8i;Integrated Security=yes")
Dim custDA As OracleDataAdapter = New OracleDataAdapter
custDA.MissingSchemaAction = MissingSchemaAction.AddWithKey
custDA.SelectCommand = New OracleCommand("SELECT DeptNo, DName FROM Dept", myOracleConnection)
custDA.InsertCommand = New OracleCommand("INSERT INTO Dept (DeptNo, DName) " & _
"VALUES (:pDeptNo, :pDName)", myOracleConnection)
custDA.UpdateCommand = New OracleCommand("UPDATE Dept SET DeptNo = :pDeptNo, DName = :pDName " & _
"WHERE DeptNo = :pDeptNo", myOracleConnection)
custDA.DeleteCommand = New OracleCommand("DELETE FROM Dept WHERE DeptNo = :pDeptNo", myOracleConnection)
custDA.InsertCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo")
custDA.InsertCommand.Parameters.Add("pDName", OracleType.VarChar, 14, "DName")
custDA.UpdateCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo")
custDA.UpdateCommand.Parameters.Add("pDName", OracleType.VarChar, 14, "DName")
custDA.UpdateCommand.Parameters.Add("poldDeptNo", OracleType.Number, 2, "DeptNo").SourceVersion = DataRowVersion.Original
custDA.DeleteCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo").SourceVersion = DataRowVersion.Original
End Sub
public static void CreateOracleDataAdapter()
{
OracleConnection myOracleConnection = new OracleConnection("Data Source=Oracle8i;Integrated Security=yes");
OracleDataAdapter custDA = new OracleDataAdapter();
custDA.MissingSchemaAction = MissingSchemaAction.AddWithKey;
custDA.SelectCommand = new OracleCommand("SELECT DeptNo, CompanyName FROM Dept", myOracleConnection);
custDA.InsertCommand = new OracleCommand("INSERT INTO Dept (DeptNo, CompanyName) " +
"VALUES (:pDeptNo, :pCompanyName)", myOracleConnection);
custDA.UpdateCommand = new OracleCommand("UPDATE Dept SET DeptNo = :pDeptNo, CompanyName = :pCompanyName " +
"WHERE DeptNo = :pDeptNo", myOracleConnection);
custDA.DeleteCommand = new OracleCommand("DELETE FROM Dept WHERE DeptNo = :pDeptNo", myOracleConnection);
custDA.InsertCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo");
custDA.InsertCommand.Parameters.Add("pCompanyName", OracleType.VarChar, 14, "CompanyName");
custDA.UpdateCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo");
custDA.UpdateCommand.Parameters.Add("pCompanyName", OracleType.VarChar, 14, "CompanyName");
custDA.UpdateCommand.Parameters.Add("poldDeptNo", OracleType.Number, 2, "DeptNo").SourceVersion = DataRowVersion.Original;
custDA.DeleteCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo").SourceVersion = DataRowVersion.Original;
}
Commenti
Quando si crea un'istanza di , le proprietà di OracleDataAdapterlettura/scrittura seguenti vengono impostate sui valori predefiniti, come illustrato nella tabella.
Proprietà | Valore predefinito |
---|---|
MissingMappingAction | MissingMappingAction.Passthrough |
MissingSchemaAction | MissingSchemaAction.Add |
È possibile modificare il valore di una di queste proprietà tramite una chiamata separata alla proprietà .
Vedi anche
Si applica a
OracleDataAdapter(OracleCommand)
Inizializza una nuova istanza della classe OracleDataAdapter con l'istruzione SQL SELECT specificata.
public:
OracleDataAdapter(System::Data::OracleClient::OracleCommand ^ selectCommand);
public OracleDataAdapter (System.Data.OracleClient.OracleCommand selectCommand);
new System.Data.OracleClient.OracleDataAdapter : System.Data.OracleClient.OracleCommand -> System.Data.OracleClient.OracleDataAdapter
Public Sub New (selectCommand As OracleCommand)
Parametri
- selectCommand
- OracleCommand
Classe OracleCommand che è un'istruzione SQL SELECT o una stored procedure e viene impostata come la proprietà SelectCommand della classe OracleDataAdapter.
Esempio
Nell'esempio seguente viene creato un oggetto OracleDataAdapter e vengono impostate alcune delle relative proprietà.
Public Sub CreateOracleDataAdapter()
Dim myOracleConnection As OracleConnection = New OracleConnection("Data Source=Oracle8i;Integrated Security=yes")
Dim myOracleCommand As OracleCommand = New OracleCommand("SELECT DeptNo, DName FROM Dept", myOracleConnection)
Dim custDA As OracleDataAdapter = New OracleDataAdapter(myOracleCommand)
custDA.MissingSchemaAction = MissingSchemaAction.AddWithKey
custDA.InsertCommand = New OracleCommand("INSERT INTO Dept (DeptNo, DName) " & _
"VALUES (:pDeptNo, :pDName)", myOracleConnection)
custDA.UpdateCommand = New OracleCommand("UPDATE Dept SET DeptNo = :pDeptNo, DName = :pDName " & _
"WHERE DeptNo = :pDeptNo", myOracleConnection)
custDA.DeleteCommand = New OracleCommand("DELETE FROM Dept WHERE DeptNo = :pDeptNo", myOracleConnection)
custDA.InsertCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo")
custDA.InsertCommand.Parameters.Add("pDName", OracleType.VarChar, 14, "DName")
custDA.UpdateCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo")
custDA.UpdateCommand.Parameters.Add("pDName", OracleType.VarChar, 14, "DName")
custDA.UpdateCommand.Parameters.Add("poldDeptNo", OracleType.Number, 2, "DeptNo").SourceVersion = DataRowVersion.Original
custDA.DeleteCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo").SourceVersion = DataRowVersion.Original
End Sub
public static void CreateOracleDataAdapter()
{
OracleConnection myOracleConnection = new OracleConnection("Data Source=Oracle8i;Integrated Security=yes");
OracleCommand myOracleCommand = new OracleCommand("SELECT DeptNo, DName FROM Dept", myOracleConnection);
OracleDataAdapter custDA = new OracleDataAdapter(myOracleCommand);
custDA.MissingSchemaAction = MissingSchemaAction.AddWithKey;
custDA.InsertCommand = new OracleCommand("INSERT INTO Dept (DeptNo, DName) " +
"VALUES (:pDeptNo, :pDName)", myOracleConnection);
custDA.UpdateCommand = new OracleCommand("UPDATE Dept SET DeptNo = :pDeptNo, DName = :pDName " +
"WHERE DeptNo = :pDeptNo", myOracleConnection);
custDA.DeleteCommand = new OracleCommand("DELETE FROM Dept WHERE DeptNo = :pDeptNo", myOracleConnection);
custDA.InsertCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo");
custDA.InsertCommand.Parameters.Add("pDName", OracleType.VarChar, 14, "DName");
custDA.UpdateCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo");
custDA.UpdateCommand.Parameters.Add("pDName", OracleType.VarChar, 14, "DName");
custDA.UpdateCommand.Parameters.Add("poldDeptNo", OracleType.Number, 2, "DeptNo").SourceVersion = DataRowVersion.Original;
custDA.DeleteCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo").SourceVersion = DataRowVersion.Original;
}
Commenti
Questa implementazione del OracleDataAdapter costruttore imposta la SelectCommand proprietà sul valore specificato nel selectCommand
parametro .
Quando si crea un'istanza di , le proprietà di OracleDataAdapterlettura/scrittura seguenti vengono impostate sui valori predefiniti, come illustrato nella tabella.
Proprietà | Valore iniziale |
---|---|
MissingMappingAction | MissingMappingAction.Passthrough |
MissingSchemaAction | MissingSchemaAction.Add |
È possibile modificare il valore di una di queste proprietà tramite una chiamata separata alla proprietà .
Vedi anche
Si applica a
OracleDataAdapter(String, OracleConnection)
Inizializza una nuova istanza della classe OracleDataAdapter con un'istruzione SQL SELECT e una classe OracleConnection.
public:
OracleDataAdapter(System::String ^ selectCommandText, System::Data::OracleClient::OracleConnection ^ selectConnection);
public OracleDataAdapter (string selectCommandText, System.Data.OracleClient.OracleConnection selectConnection);
new System.Data.OracleClient.OracleDataAdapter : string * System.Data.OracleClient.OracleConnection -> System.Data.OracleClient.OracleDataAdapter
Public Sub New (selectCommandText As String, selectConnection As OracleConnection)
Parametri
- selectCommandText
- String
Stringa che è un'istruzione SQL SELECT o una stored procedure, utilizzata dalla proprietà SelectCommand della classe OracleDataAdapter.
- selectConnection
- OracleConnection
Classe OracleConnection che rappresenta la connessione.
Esempio
Nell'esempio seguente viene creato un oggetto OracleDataAdapter e vengono impostate alcune delle relative proprietà.
Public Sub CreateOracleDataAdapter()
Dim myOracleConnection As OracleConnection = New OracleConnection("Data Source=Oracle8i;Integrated Security=yes")
Dim mySelectText As String = "SELECT DeptNo, DName FROM Dept"
Dim custDA As OracleDataAdapter = New OracleDataAdapter(mySelectText, myOracleConnection)
custDA.MissingSchemaAction = MissingSchemaAction.AddWithKey
custDA.InsertCommand = New OracleCommand("INSERT INTO Dept (DeptNo, DName) " & _
"VALUES (:pDeptNo, :pDName)", myOracleConnection)
custDA.UpdateCommand = New OracleCommand("UPDATE Dept SET DeptNo = :pDeptNo, DName = :pDName " & _
"WHERE DeptNo = :pDeptNo", myOracleConnection)
custDA.DeleteCommand = New OracleCommand("DELETE FROM Dept WHERE DeptNo = :pDeptNo", myOracleConnection)
custDA.InsertCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo")
custDA.InsertCommand.Parameters.Add("pDName", OracleType.VarChar, 14, "DName")
custDA.UpdateCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo")
custDA.UpdateCommand.Parameters.Add("pDName", OracleType.VarChar, 14, "DName")
custDA.UpdateCommand.Parameters.Add("poldDeptNo", OracleType.Number, 2, "DeptNo").SourceVersion = DataRowVersion.Original
custDA.DeleteCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo").SourceVersion = DataRowVersion.Original
End Sub
public static void CreateOracleDataAdapter()
{
OracleConnection myOracleConnection = new OracleConnection("Data Source=Oracle8i;Integrated Security=yes");
string mySelectText = "SELECT DeptNo, DName FROM Dept";
OracleDataAdapter custDA = new OracleDataAdapter(mySelectText, myOracleConnection );
custDA.MissingSchemaAction = MissingSchemaAction.AddWithKey;
custDA.InsertCommand = new OracleCommand("INSERT INTO Dept (DeptNo, DName) " +
"VALUES (:pDeptNo, :pDName)", myOracleConnection);
custDA.UpdateCommand = new OracleCommand("UPDATE Dept SET DeptNo = :pDeptNo, DName = :pDName " +
"WHERE DeptNo = :pDeptNo", myOracleConnection);
custDA.DeleteCommand = new OracleCommand("DELETE FROM Dept WHERE DeptNo = :pDeptNo", myOracleConnection);
custDA.InsertCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo");
custDA.InsertCommand.Parameters.Add("pDName", OracleType.VarChar, 14, "DName");
custDA.UpdateCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo");
custDA.UpdateCommand.Parameters.Add("pDName", OracleType.VarChar, 14, "DName");
custDA.UpdateCommand.Parameters.Add("poldDeptNo", OracleType.Number, 2, "DeptNo").SourceVersion = DataRowVersion.Original;
custDA.DeleteCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo").SourceVersion = DataRowVersion.Original;
}
Commenti
Questa implementazione di OracleDataAdapter può essere utile in un'applicazione che deve chiamare il Fill
metodo per due o più OracleDataAdapter oggetti.
Vedi anche
Si applica a
OracleDataAdapter(String, String)
Inizializza una nuova istanza della classe OracleDataAdapter con un'istruzione SQL SELECT e una stringa di connessione.
public:
OracleDataAdapter(System::String ^ selectCommandText, System::String ^ selectConnectionString);
public OracleDataAdapter (string selectCommandText, string selectConnectionString);
new System.Data.OracleClient.OracleDataAdapter : string * string -> System.Data.OracleClient.OracleDataAdapter
Public Sub New (selectCommandText As String, selectConnectionString As String)
Parametri
- selectCommandText
- String
Stringa che è un'istruzione SQL SELECT o una stored procedure, utilizzata dalla proprietà SelectCommand della classe OracleDataAdapter.
- selectConnectionString
- String
Stringa di connessione.
Esempio
Nell'esempio seguente viene creato un oggetto OracleDataAdapter e vengono impostate alcune delle relative proprietà.
Public Sub CreateOracleDataAdapter()
Dim myConnectionText As String = "Data Source=Oracle8i;Integrated Security=yes"
Dim mySelectText As String = "SELECT DeptNo, DName FROM Dept"
Dim custDA As OracleDataAdapter = New OracleDataAdapter(mySelectText, myConnectionText )
Dim myOracleConnection As OracleConnection = custDA.SelectCommand.Connection
custDA.MissingSchemaAction = MissingSchemaAction.AddWithKey
custDA.InsertCommand = New OracleCommand("INSERT INTO Dept (DeptNo, DName) " & _
"VALUES (:pDeptNo, :pDName)", myOracleConnection)
custDA.UpdateCommand = New OracleCommand("UPDATE Dept SET DeptNo = :pDeptNo, DName = :pDName " & _
"WHERE DeptNo = :pDeptNo", myOracleConnection)
custDA.DeleteCommand = New OracleCommand("DELETE FROM Dept WHERE DeptNo = :pDeptNo", myOracleConnection)
custDA.InsertCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo")
custDA.InsertCommand.Parameters.Add("pDName", OracleType.VarChar, 14, "DName")
custDA.UpdateCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo")
custDA.UpdateCommand.Parameters.Add("pDName", OracleType.VarChar, 14, "DName")
custDA.UpdateCommand.Parameters.Add("poldDeptNo", OracleType.Number, 2, "DeptNo").SourceVersion = DataRowVersion.Original
custDA.DeleteCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo").SourceVersion = DataRowVersion.Original
End Sub
public static void CreateOracleDataAdapter()
{
string myConnectionText = "Data Source=Oracle8i;Integrated Security=yes";
string mySelectText = "SELECT DeptNo, DName FROM Dept";
OracleDataAdapter custDA = new OracleDataAdapter(mySelectText, myConnectionText );
OracleConnection myOracleConnection = custDA.SelectCommand.Connection;
custDA.MissingSchemaAction = MissingSchemaAction.AddWithKey;
custDA.InsertCommand = new OracleCommand("INSERT INTO Dept (DeptNo, DName) " +
"VALUES (:pDeptNo, :pDName)", myOracleConnection);
custDA.UpdateCommand = new OracleCommand("UPDATE Dept SET DeptNo = :pDeptNo, DName = :pDName " +
"WHERE DeptNo = :pDeptNo", myOracleConnection);
custDA.DeleteCommand = new OracleCommand("DELETE FROM Dept WHERE DeptNo = :pDeptNo", myOracleConnection);
custDA.InsertCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo");
custDA.InsertCommand.Parameters.Add("pDName", OracleType.VarChar, 14, "DName");
custDA.UpdateCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo");
custDA.UpdateCommand.Parameters.Add("pDName", OracleType.VarChar, 14, "DName");
custDA.UpdateCommand.Parameters.Add("poldDeptNo", OracleType.Number, 2, "DeptNo").SourceVersion = DataRowVersion.Original;
custDA.DeleteCommand.Parameters.Add("pDeptNo", OracleType.Number, 2, "DeptNo").SourceVersion = DataRowVersion.Original;
}