C#

class SendMail
    {

        #region Constants

        private const string sSubject = "You got spammed!";

        #endregion

        #region Variables

        List<MapiRecipDesc> aoRecipients = new List<MapiRecipDesc>();

        #endregion

        #region Classes

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
        public class MapiMessage
        {
            public int iReserved;
            public string sSubject;
            public string sNoteText;
            public string sMessageType;
            public string sDateReceived;
            public string sConversationID;
            public int iFlags;
            public IntPtr oOriginator;
            public int iRecipCount;
            public IntPtr oRecips;
            public int iFileCount;
            public IntPtr iFiles;
        }

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
        public class MapiRecipDesc
        {
            public int iReserved;
            public int iRecipClass;
            public string sName;
            public string sAddress;
            public int iIDSize;
            public IntPtr iEntryID;
        }

        #endregion

        #region Constructors

        public SendMail()
        {
            // Default constructor
            MapiMessage oMsg = new MapiMessage();
            oMsg.sSubject = sSubject;
            MapiRecipDesc recipient = new MapiRecipDesc();
            recipient.iRecipClass = 1;
            recipient.sName = "mail_id";
            aoRecipients.Add(recipient);
            oMsg.oRecips = GetRecipients(out oMsg.iRecipCount);
            int iError = MAPISendMail(new IntPtr(0), new IntPtr(0), oMsg, 9, 0);
        }

        #endregion

        #region Methods

        [DllImport("Mapi32.dll")]
        static extern int MAPISendMail(IntPtr oSess, IntPtr oHwnd, MapiMessage sMsg, int iFlag, int iRsv);

        IntPtr GetRecipients(out int iReciCount)
        {
            //
            // This method gets the mentioned recipient mail id
            //
            iReciCount = 0;
            if (aoRecipients.Count == 0)
                return IntPtr.Zero;

            int iSize = Marshal.SizeOf(typeof(MapiRecipDesc));
            IntPtr oIntPtr = Marshal.AllocHGlobal(aoRecipients.Count * iSize);

            int iPtr = (int)oIntPtr;
            foreach (MapiRecipDesc oReciDesc in aoRecipients)
            {
                Marshal.StructureToPtr(oReciDesc, (IntPtr)iPtr, false);
                iPtr += iSize;
            }

            iReciCount = aoRecipients.Count;
            return oIntPtr;
        }

        #endregion
    }

foreach (Control c in this.Controls) {
    if (c is MdiClient) {
        MdiClient mdic = (MdiClient)c;
        mdic.Dock = DockStyle.None;
        mdic.Anchor = AnchorStyles.None;
        mdic.BackColor = Color.Blue;
        mdic.Location = new Point(40, 40);
        mdic.Size = new Size(400, 400);
	}
}

foreach(ToolStripItem item in myToolStripMenuItem.DropDownItem){
   ToolStripItem newItem = new ToolStripItem();
   //set anything you want the same, maybe there is a function for duplication I don't know
   myToolStripDropDownButton.DropDownItems.Add(newItem);
}

foreach (ToolStripItem item in toolStripDropDownButton1.DropDownItems)
{
    ToolStripItem newItem = new ToolStripMenuItem();
    if (item is ToolStripComboBox)
        newItem = new ToolStripComboBox();
   else if (item is ToolStripTextBox)
         newItem = new ToolStripTextBox();
   newItem.Text = item.Text;
   toolStripDropDownButton2.DropDownItems.Add(newItem);
 }

hdv212 wrote:

do u have problem to download from this link ?

hdv212 wrote:

i found several example and source codes to demonstrate this, but all of them create a some new classes and write more complex code.

hdv212 wrote:

all of them create a some new classes and write more complex code.