Retrieving Data from Multiple REF CURSORs Using an OracleDataReader
This Microsoft Visual Basic example executes a PL/SQL stored procedure that returns two REF CURSOR parameters, and reads the values using an OracleDataReader.
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