using System;

using System.Runtime.InteropServices;

namespace ConsoleApplication3

{

class Class1

{

[STAThread]

static void Main(string[] args)

{

System.Diagnostics.Process myProcess = new

System.Diagnostics.Process();

myProcess.StartInfo.FileName = "calc";

myProcess.Start();

myProcess.WaitForInputIdle();

IntPtr hWnd = myProcess.MainWindowHandle;

Console.WriteLine(hWnd);

bool p = SetForegroundWindow(hWnd);

if(!p)

Console.WriteLine("Could not set focus");

}

[DllImport("user32.dll", CharSet=CharSet.Auto,SetLastError=true)] public static extern bool SetForegroundWindow(IntPtr hWnd);

[DllImport("user32.dll", CharSet=CharSet.Auto,SetLastError=true)] public static extern IntPtr SetFocus(IntPtr hWnd);

}

}