using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Diagnostics;
namespace cmdForm {
 public partial class Form1 : Form {
  public Form1() {
   InitializeComponent();
  }
  private void button1_Click(object sender, EventArgs e) {
   Process p = new Process();
   p.StartInfo.FileName = "cmd.exe ";//notepad.exe
   p.Start();
   System.Threading.Thread.Sleep(100);
   SetParent(p.MainWindowHandle, this.Handle);
   ShowWindow(p.MainWindowHandle, 3);
  }
  [DllImport("User32.dll ", EntryPoint = "SetParent")]
  private static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);
  [DllImport("user32.dll ", EntryPoint = "ShowWindow")]
  public static extern int ShowWindow(IntPtr hwnd, int nCmdShow);
 }
}