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Filling a DataSet Using One or More REF CURSORs 

This Microsoft Visual Basic example executes a PL/SQL stored procedure that returns two REF CURSOR parameters, and fills a DataSet with the rows that are returned.

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;")
  Dim ds As New DataSet()
    Using conn As New OracleConnection(connString)
    Dim cmd As New OracleCommand()

    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

    Dim da As New OracleDataAdapter(cmd)
    da.TableMappings.Add("Table", "Emp")
    da.TableMappings.Add("Table1", "Dept")
    da.Fill(ds)

    ds.Relations.Add("EmpDept", ds.Tables("Dept").Columns("Deptno"), _
      ds.Tables("Emp").Columns("Deptno"), False)

    DataGrid1.DataSource = ds.Tables("Dept")
  End Using

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