OracleDataReader を使用した複数の REF CURSOR からのデータの取得
この Microsoft Visual Basic の例では、2 つの REF CURSOR パラメーターを返し、OracleDataReader を使用して値を読み取る PL/SQL ストアド プロシージャを実行します。
Private Sub Button1_Click( _
ByVal sender As Object, ByVal e As System.EventArgs) _
Handles Button1.Click
Dim connString As New String( _
"Data Source=Oracle9i;User ID=scott;Password=tiger;")
Using conn As New OracleConnection(connString)
Dim cmd As New OracleCommand()
Dim rdr As OracleDataReader
conn.Open()
cmd.Connection = conn
cmd.CommandText = "CURSPKG.OPEN_TWO_CURSORS"
cmd.CommandType = CommandType.StoredProcedure
cmd.Parameters.Add(New OracleParameter( _
"EMPCURSOR", OracleType.Cursor)).Direction = _
ParameterDirection.Output
cmd.Parameters.Add(New OracleParameter(_
"DEPTCURSOR", OracleType.Cursor)).Direction = _
ParameterDirection.Output
rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection)
While (rdr.Read())
REM do something with the values from the EMP table
End While
rdr.NextResult()
While (rdr.Read())
REM do something with the values from the DEPT table
End While
rdr.Close()
End Using
End Sub