private void databaseBox_TextChanged(object sender, EventArgs e)
        {
            if (!String.IsNullOrEmpty(databaseBox.Text))
            {
                try
                {
                    DbName[] dbTemp = new DbName[dbTrees.Count];
                    dbTrees.CopyTo(dbTemp);
                    foreach (var item in dbTemp)
                    {
                        if (item.DName.ToLower().Contains(databaseBox.Text.ToLower()))
                        {
                            item.IsSelected = true;
                        }
                        else
                        {
                            item.IsSelected = false;
                        }
                    }

                    UpdateMenuTree(dbTemp.ToList());
                }
                catch (Exception ex)
                {
                    logger.Log(LogLevel.Error, ex.Message);
                }
            }
            else
            {
                InitMenuTree();
            }
        }