C#

using System.Windows.Forms;

public class Test
{
    static void Main()
    {
        Application.Run(new MainForm());
    }
}

class MainForm : Form
{
    public MainForm()
    {
        WindowState = FormWindowState.Maximized;
        IsMdiContainer = true;
        Form frm = new Childform();
        frm.MdiParent = this;
        frm.Show();
        Form frm2 = new Childform();
        frm2.MdiParent = this;
        frm2.Show();
        frm2.Left = 2000;
    }
}

class Childform : Form
{
    public Childform()
    {
        var grid = new DataGridView();
        grid.Columns.Add(new DataGridViewTextBoxColumn());
        grid.EditMode = DataGridViewEditMode.EditOnEnter;
        Controls.Add(grid);
    }
} 

TabPage newPage = new TabPage();
NewOrder newOrd = new NewOrder();
newPage.Controls.Add(newOrd);
tabControl1.Controls.Add(newPage);

UriBuilder uB = new UriBuilder();
uB.Scheme = Uri.UriSchemeFtp;
uB.Host = ConfigurationManager.AppSettings["FTPRemoteHost"].ToString();
uB.UserName = ConfigurationManager.AppSettings["FTPRemoteUser"].ToString();
uB.Password = ConfigurationManager.AppSettings["FTPRemotePass"].ToString();
FileInfo uFInfo = new FileInfo(localpdf);
uB.Path = remotepath + uFInfo.Name;

{ftp://username:password@myftpserver/existingDirectory/missingDirectory/mydocument.pdf}

        public bool UploadFile(Uri serverUri, string localFile)
        {
            if (serverUri.Scheme != Uri.UriSchemeFtp)
                return false;

            FtpWebRequest request = (FtpWebRequest)WebRequest.Create(serverUri);
            request.Method = WebRequestMethods.Ftp.UploadFile;
            request.UseBinary = true;
            
            if (File.Exists(localFile) == false)
                return false;

            StreamReader sourceStream = new StreamReader(localFile);
            byte[] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());
            sourceStream.Close();

            if (fileContents.Length <= 0)
                return false;

            request.ContentLength = fileContents.Length;


            try
            {
                Stream requestStream = request.GetRequestStream();
                requestStream.Write(fileContents, 0, fileContents.Length);
                requestStream.Close();
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex.Message);
                return false;
            }

            FtpWebResponse response = (FtpWebResponse)request.GetResponse();
#if(DEBUG)
            WriteEvent(response.StatusDescription, EventLogEntryType.Information);
#endif
            response.Close();
            request.Close();
            return true;
        }

public class CustomControl1 : Control 
    { 
        static CustomControl1() 
        { 
            DefaultStyleKeyProperty.OverrideMetadata(typeof(CustomControl1), new FrameworkPropertyMetadata(typeof(CustomControl1))); 
        } 
        private List<int> _intlist = new List<int>(); 
        public List<int> intlist 
        { 
            get { return _intlist; } 
            set { _intlist = value; } 
        } 
    } 
} </int></int></int>

<Grid> 
    <CustCtrl1NameSpace:CustomControl1/> 
</Grid>