public void SetUrlValueExtension(SPWeb web)
        {
            SPList SharepointList = web.IsListExist("Links");

            if (SharepointList != null)
            {
                //example column Internal name "test" and display name "text col"
                SPListItem _item = SharepointList.AddItem();
                _item.SetFieldValueUrl("URL", "http://google.com", "Google");
                _item.Update();

            }
        }
        public void GetListFieldNameWithDisplayName(SPWeb web, bool isList)
        {
            SPList SharepointList = web.IsListExist("Customer City");
            if (isList)
            {

                if (SharepointList != null)
                {
                    //example column Internal name "test" and display name "text col"
                    MessageBox.Show(SharepointList.GetFieldTitle("test"));
                }
            }
            else
            {
                if (SharepointList != null)
                {
                    SPListItem item = SharepointList.Items.GetItemById(1);
                    MessageBox.Show(item.GetFieldTitle("test"));

                }

            }
        }
        /// <summary>
        /// it is for moss 2007
        /// </summary>
        /// <param name="_web"></param>
        public void SharePointListExist(SPWeb _web)
        {
            SPList SharepointList = _web.IsListExist("Customer");

            if (SharepointList != null)
            {
                MessageBox.Show("List Exist");
            }
            else
            {
                MessageBox.Show("List Not Exist");
            }
        }