Outlook mail searching

using System;
using System.Windows.Forms;
using Outlook = Microsoft.Office.Interop.Outlook;

namespace OutlookDelete
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        public void DeleteMail()
        {
            Outlook._Application myOlApp = null;
            Outlook.NameSpace newNS = null;
            myOlApp = new Outlook.Application();
            newNS = myOlApp.GetNamespace("MAPI");
            Outlook.MAPIFolder outbox = newNS.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderOutbox);
            Outlook.MAPIFolder inbox = newNS.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderInbox);
            Outlook.MAPIFolder sent = newNS.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderSentMail);
            //Outlook.MAPIFolder delete = newNS.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderDeletedItems);
            string strSearchString = "AppV";
            string filter = "@SQL=\"urn:schemas:httpmail:subject\" like '%" + strSearchString + "%'";
            Outlook.Table outboxTable = outbox.GetTable(filter, Outlook.OlTableContents.olUserItems);
            Outlook.Table inboxTable = inbox.GetTable(filter, Outlook.OlTableContents.olUserItems);
            Outlook.Table sentTable = sent.GetTable(filter, Outlook.OlTableContents.olUserItems);
            Outlook.Table deleteTable = sent.GetTable(filter, Outlook.OlTableContents.olUserItems);
            while (!outboxTable.EndOfTable)
            {
                // get the row item
                Outlook.Row myrow = outboxTable.GetNextRow();
                string subject = (string) myrow["Subject"];
                string EntryID = "";
                EntryID = Convert.ToString(myrow["EntryID"]);
                string StoreID = "";
                StoreID = Convert.ToString(outbox.StoreID);
                Outlook.MailItem oMail = (Outlook.MailItem) myOlApp.Session.GetItemFromID(EntryID, StoreID);

                oMail.Delete();

                // release objects
                myrow = null;
            }
            while (!inboxTable.EndOfTable)
            {
                // get the row item
                Outlook.Row myrow = inboxTable.GetNextRow();
                string subject = (string) myrow["Subject"];
                string EntryID = "";
                EntryID = Convert.ToString(myrow["EntryID"]);
                string StoreID = "";
                StoreID = Convert.ToString(inbox.StoreID);


                Outlook.MailItem oMail = (Outlook.MailItem) myOlApp.Session.GetItemFromID(EntryID, StoreID);
                //MessageBox.Show(oMail.Subject);
                oMail.Delete();


                myrow = null;
            }

            while (!sentTable.EndOfTable)
            {
                // get the row item
                Outlook.Row myrow = sentTable.GetNextRow();
                string subject = (string)myrow["Subject"];
                string EntryID = "";
                EntryID = Convert.ToString(myrow["EntryID"]);
                string StoreID = "";
                StoreID = Convert.ToString(sent.StoreID);

                    Outlook.MailItem oMail = (Outlook.MailItem)myOlApp.Session.GetItemFromID(EntryID, StoreID);
                    oMail.Delete();

                // release objects
                myrow = null;
            }

            deleteBin();
            //while (!deleteTable.EndOfTable)
            //{
            //    // get the row item
            //    Outlook.Row myrow = deleteTable.GetNextRow();
            //    string subject = (string)myrow["Subject"];
            //    string EntryID = "";
            //    EntryID = Convert.ToString(myrow["EntryID"]);
            //    string StoreID = "";
            //    StoreID = Convert.ToString(delete.StoreID);
            //    //delete.Items.Remove(1);
            //    Outlook.MailItem oMail = (Outlook.MailItem)myOlApp.Session.GetItemFromID(EntryID, StoreID);
            //    oMail.Delete();

            //    // release objects
            //    myrow = null;

            //}

        }

        private void btnGo_Click(object sender, EventArgs e)
        {
            DeleteMail();
        }

        public void deleteBin()
        {


            Outlook._Application outlookApp =
                new Outlook.Application();

            Outlook.MAPIFolder binF = (Outlook.MAPIFolder)outlookApp.Session.GetDefaultFolder
                (Outlook.OlDefaultFolders.olFolderDeletedItems);
            while (binF.Items.Count != 0)
            {
                binF.Items.Remove(1);
            }

        }


    }
}