Copy tree application issue

[vishwas]

i wrote a below code to ease copytree but application not working well 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using EPDM.Interop.epdm;

namespace Api_CopyTree
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private IEdmVault5 vault1 = null;

        private void Form1_Load(object sender, EventArgs e)
        {
            try
            {
                vault1 = new EdmVault5();
                IEdmVault8 vault = (IEdmVault8)vault1;
                EdmViewInfo[] Views = null;

                vault.GetVaultViews(out Views, false);
                VaultsComboBox.Items.Clear();
                foreach (EdmViewInfo View in Views)
                {
                    VaultsComboBox.Items.Add(View.mbsVaultName);
                }
                if (VaultsComboBox.Items.Count > 0)
                {
                    VaultsComboBox.Text = (string)VaultsComboBox.Items[0];
                }
            }
            catch (System.Runtime.InteropServices.COMException ex)
            {
                MessageBox.Show("HRESULT = 0x" + ex.ErrorCode.ToString("X") + " " + ex.Message);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void btnSelAssy_Click(object sender, EventArgs e)
        {

            try
            {
                ListBox.Items.Clear();

                if (!vault1.IsLoggedIn)
                    vault1.LoginAuto(VaultsComboBox.Text, this.Handle.ToInt32());

                OpenFileDialog.InitialDirectory = vault1.RootFolderPath;
                OpenFileDialog.Filter = "SOLIDWORKS Assembly (*.sldasm)|*.sldasm";

                if (OpenFileDialog.ShowDialog() != DialogResult.OK)
                    return;

                ListBox.Items.Add(OpenFileDialog.FileName);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }


        }

        private void BrowseDestFolder_Click(object sender, EventArgs e)

        {
            try
            {
                listBox1.Items.Clear();

                if (!vault1.IsLoggedIn)
                    vault1.LoginAuto(VaultsComboBox.Text, this.Handle.ToInt32());

                IEdmFolder10 folder =
                    (IEdmFolder10)vault1.BrowseForFolder(
                        this.Handle.ToInt32(),
                        "Select destination folder");

                if (folder != null)
                    listBox1.Items.Add(folder.LocalPath);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void CopyTree_Click(object sender, EventArgs e)
        {

            try
            {
                if (ListBox.Items.Count != 1 || listBox1.Items.Count != 1)
                {
                    MessageBox.Show("Select one assembly and one destination folder");
                    return;
                }

                // Ensure vault is connected
                if (!vault1.IsLoggedIn)
                    vault1.LoginAuto(VaultsComboBox.Text, this.Handle.ToInt32());

                IEdmVault19 vault19 = (IEdmVault19)vault1;

                string asmPath = ListBox.Items[0].ToString();
                string destPath = listBox1.Items[0].ToString();

                IEdmFolder5 parentFolder;
                IEdmFile12 asmFile =
                    (IEdmFile12)vault19.GetFileFromPath(asmPath, out parentFolder);

                if (asmFile== null|| parentFolder==null)
                {
                    MessageBox.Show("Could not find the source file or folder in the vault.");
                    return;
                }

                // Fix: Properly intantiate the struct to clear default memory
                EdmCopyTreeOptions options = new EdmCopyTreeOptions(); // Intializes all fields to Default Values
                options.mbsPrefix = "Copy_";
                options.mbsSuffix = "";
                options.mbIncludeDrawings = -1; //-1 Means True in PDM COM API
                options.mbUseLatestVersion = -1;

                // Execute copy tree operation
                vault19.CopyTree(
                    asmFile.ID,
                    parentFolder.ID,
                    destPath,
                    true,
                    true,
                    options,
                    this.Handle.ToInt32());

                MessageBox.Show("Copy completed Successfully!");
            }
            catch (System.Runtime.InteropServices.COMException ex)
            {
                MessageBox.Show("PDM com Error: 0x"+ex.ErrorCode.ToString("X")+"\n"+ex.Message);
            }
            catch(Exception ex)
            {
                MessageBox.Show("General Error: " + ex.Message);
            }
        }


    }

}