if (FilterKeys["TYPE"] != "-1")  w= w.Where(r => r.TYPE ==  FilterKeys["TYPE"]);
if (FilterKeys["ADDRESS"] != "-1") w = w.Where(r => r.ADDRESS.StartsWith(FilterKeys["ADDRESS"]));
if (FilterKeys["CITY"] != "-1")  w= w.Where(r =>  r.CITY == FilterKeys["CITY"]) ;

 int totalRecords = w.Count();
            if (totalRecords != 0)
            {
                var result = w.OrderBy(d => d.Client_application)
                   .Skip(pager.PageIndex * pager.PageSize)
                 .Take(pager.PageSize);
                GridStatus.DataSource = result;
                pager.Render(totalRecords, result.Count());
            }
            else
            {
                var result = Emptydata;
                GridStatus.DataSource = result;
                pager.Render(totalRecords, result.Rows.Count);
            }

select...... where ADDRESS like @p1 and CITY == @p2 and TYPE == @p3 and ADDRESS like @4

select...... where ADDRESS like @p1 and CITY == @p2 and ADDRESS like @p4