使用 OracleDataReader 從多個 REF CURSOR 擷取資料

此 Microsoft Visual Basic 範例執行可傳回兩個 REF CURSOR 參數的 PL/SQL 預存程序，並使用 OracleDataReader 讀取值。

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 

請參閱

其他資源

Oracle REF CURSOR