c# - Is it possible to make 1 generic method out of these 2 linq statements? -

i have 2 linq statements - in middle of switch block. statements below.

pwstarttime = lender.applicationwindows .where(w => w.name == pwperiod && w.endtime.timeofday > datetocheck.timeofday) .select(w => w.starttime) .firstordefault();   pwstarttime = lender.transferwindows .where(w => w.name == pwperiod && w.endtime.timeofday > datetocheck.timeofday) .select(w => w.starttime) .firstordefault(); 

as can see difference refer 2 different properties of "lender", however, elements used in linq query identical in "applicationwindows" , "transferwindows", although not same objects , each contain other unique properties.

so, it possible return w.startdate via 1 generic method?

thanks in advance.

// here's 2 classes

public class applicationwindow {     public string name { get; set; }     public datetime starttime { get; set; }     public datetime endtime { get; set; } }  public class transferwindow {     public string name { get; set; }      public datetime starttime { get; set; }      public datetime endtime { get; set; }      [xmlignore]     public timespan cycle { get; set; }      [browsable(false)]     [xmlelement("cycle")]     public string cyclestring     {         { return xmlconvert.tostring(cycle); }         set { cycle = value.isnullorempty() ? timespan.zero : xmlconvert.totimespan(value); }     } } 

why not create interface or abstract base class transferwindow , applicationwindow, defining common properties? can (assuming lender.transferwindows , lender.applicationwindows lists of respective classes - if not, modify method signature appropriate):

public datetime getstarttime(ilist<window> windows, datetime datetocheck, string pwperiod) {     return windows     .where(w => w.name == pwperiod && w.endtime.timeofday > datetocheck.timeofday)     .select(w => w.starttime)     .firstordefault(); }