This method returns a Task-based asynchronous version of OracleDataReader.Read().

Declaration

// C#
public override Task<bool> ReadAsync(CancellationToken cancellationToken)

Parameters

cancellationToken - The input cancellation token which can be used by the application to cancel the task before command timeout occurs.

Return Value

Task<bool> object representing the asynchronous operation immediately without blocking the calling thread for the whole duration of the query execution

Implements

DbDataReader

Exceptions

InvalidOperationException - The connection is closed, or the reader is closed.

Example

using Oracle.ManagedDataAccess.Client;
using System;
using System.Threading;

namespace AsyncApp
{
  class AsyncDemo
  {
    static async Task Main()
    {
      string connectionString = "User Id=HR; Password=<PASSWORD>; Data Source=oracle;";
      OracleConnection oc = new OracleConnection(connectionString);
      await oc.OpenAsync(CancellationToken.None);

      OracleCommand cmd = oc.CreateCommand();
      cmd.CommandText = "select * from demo_table";

      OracleDataReader reader;
      reader = await cmd.ExecuteReaderAsync();
      while (await reader.ReadAsync(CancellationToken.None))
      {
        Console.WriteLine(reader.GetValue(0));
      }
    }
  }
}