using System.Collections.Generic;
using System.Linq;
using System.Text;
using Progress.Open4GL.Proxy;
using Progress.Open4GL.DynamicAPI;

namespace AppServerCompressionExample

{

    class Program

      {
        static void Main(string[] args)
          { Connection conn = new Connection(null, null, "AppServer://localhost:5162/asbroker1");
            conn.CompressionEnabled = true;
            conn.CompressionLevel = 5;
            conn.CompressionThreshold = 256;

            OpenAppObject app = new OpenAppObject(conn, "testapp");

            ParameterSet pset = new ParameterSet(2);
            pset.setLongCharParameter(0, "longchar value",             ParameterSet.INPUT);
            pset.setLongCharParameter(1, "", ParameterSet.OUTPUT);
            app.runProcedure("echo.p", pset);

            String echoret = (String) pset.getOutputParameter(1);
            Console.WriteLine("Return : " + echoret);

            app.Dispose();
            conn.ReleaseConnection();
          }
        }
      }

Progress.Open4GL.RunTimeProperties.CompressionEnabled = true;

Progress.Open4GL.RunTimeProperties.CompressionLevel = 5;

Progress.Open4GL.RunTimeProperties.CompressionThreshold = 256;