The OracleArray class provides methods to access elements of the collection. Items values are accessible by Item indexed property.

The array elements can be added to the collection dynamically by calling Add, Insert methods or removed by calling Remove or RemoveAt but the maximum number of the elements cannot exceed Capacity specified at Oracle declaration of the VARRAY.

Indexes in this collection are zero-based.

Note that OracleArray can be used in data binding with DataGrid as it implements IListSource interface.

This example demonstrates how to retrieve OracleArray object from server and display its elements. To create required type and table and fill it with data you can use the following script:

CREATE OR REPLACE TYPE TEmployees AS 
  VARYING ARRAY(10000) OF VARCHAR2(40);

CREATE TABLE CompanyEmpObject (
  Code NUMBER PRIMARY KEY,
  Company VARCHAR2(40),
  Employees TEmployees        
);
INSERT INTO CompanyEmpObject
  (Code, Company, Employees)
VALUES
  (1, 'Microsoft', TEmployees('PROGRAMMER', 'MANAGER', 'ELECTRICIAN', 'CLEANUP MEN'));
INSERT INTO CompanyEmpObject
  (Code, Company, Employees)
VALUES
  (2, 'Borland', TEmployees('PROGRAMMER', 'ELECTRICIAN', 'COURIER'));
INSERT INTO CompanyEmpObject
  (Code, Company, Employees)
VALUES
  (3, 'MC Donalds', TEmployees('SHOP ASSISTANT', 'CLERK',  'CLEANUP MEN'));
INSERT INTO CompanyEmpObject
  (Code, Company, Employees)
VALUES
  (4, 'Ford', TEmployees('MECHANICIAN', 'MANAGER'));

OracleConnection connection = new OracleConnection("User Id=scott;Password=tiger;Data Source=ora");
OracleCommand command = new OracleCommand("SELECT * FROM CompanyEmpObject", connection);
connection.Open();
OracleDataReader dataReader = command.ExecuteReader();
try{
  int index = dataReader.GetOrdinal("Employees");
  while (dataReader.Read()) {
    OracleArray oraArray = dataReader.GetOracleArray(index);
    if (!oraArray.IsNull) {
      string[] employees = new string[oraArray.Count];
      for (int i = 0; i < oraArray.Count; i++)
        employees[i] = (string)oraArray[i];

      Console.WriteLine("Company: " + dataReader.GetString(1));
      foreach (string str in employees)
        Console.WriteLine("\t"+str);
    }
    else{
      Console.WriteLine("Company: " + dataReader.GetString(1));
      Console.WriteLine("No vacancies");
    }
  }
}
catch (Devart.Data.Oracle.OracleException ex) {
  Console.WriteLine(ex.Message);
}
finally{
  dataReader.Close();
  connection.Close();
}

Dim connection As New OracleConnection("User Id=scott;Password=tiger;Data Source=ora")
Dim command As New OracleCommand("SELECT * FROM CompanyEmpObject", connection)
connection.Open()
Dim dataReader As OracleDataReader = command.ExecuteReader()
Try
  Dim index As Integer = dataReader.GetOrdinal("Employees")
  While dataReader.Read()
    Dim oraArray As OracleArray = dataReader.GetOracleArray(index)
    If Not oraArray.IsNull Then
      Dim employees(oraArray.Count) As String
      Dim I As Integer
      For I = 0 To oraArray.Count - 1
        employees(I) = oraArray(I)
      Next I
      Console.WriteLine("Company: " & dataReader.GetString(1))
      For Each str As String In employees
        Console.WriteLine(Chr(9) & str)
      Next
    Else
      Console.WriteLine("Company: " & dataReader.GetString(1))
      Console.WriteLine("No vacancies")
    End If
  End While
Catch ex As Devart.Data.Oracle.OracleException
  Console.WriteLine(ex.Message)
Finally
  dataReader.Close()
  connection.Close()
End Try

System.Object
   Devart.Data.Oracle.OracleArray
      Devart.Data.Oracle.OracleTable

Reference

OracleArray Members
Devart.Data.Oracle Namespace