c# - How to incorporate criteria in Where method? -


i want ask condition in search command. i'm calling web service (api) during searching , want put statement in code there's error.

    private async task callapi(string searchtext = null)          {                    long lastupdatedtime = 0;                                    long.tryparse(appsettings.complaintlastupdatedtick, out lastupdatedtime);          var currenttick = datetime.utcnow.ticks;                     var time = new timespan(currenttick - lastupdatedtime);           if (time.totalseconds > 1)          {             int stafffk = convert.toint32(staffid);             var result = await mdataprovider.getcomplaintlist(lastupdatedtime, mcts.token, stafffk);             if (result.issuccess)             {                  // save last updated time                 appsettings.complaintlastupdatedtick = result.data.updated.tostring();                  // store data database                 if ((result.data.items != null) &&                     (result.data.items.count > 0))                 {                      var datas = new list<complaint>(result.data.items);                      **if (!string.isnullorempty(searchtext))                         {                             datas = datas.where(i => i.description.contains(searchtext)                                                  && (i.supervisorid.equals(staffid))                                                 || (i.problemtypename.contains(searchtext)));                         }                     else                         {                             datas = datas.where(i => i.supervisorid.equals(staffid));                         }**                      datas = new observablecollection<complaint>(datas);                 }             }             else if (result.haserror)             {                 await mpagedialogservice.displayalertasync("error", result.errinfo.message, "ok");             }                 }       }

both assignments of datas in if ... else causes system.collections.generic.ienumerable<ecs.features.complaints.complaint>' 'system.collections.generic.list<ecs.features.complaints.complaint>'. explicit conversions exists (are missing cast?) compilation errors:

"cannot implicitly convert type 'system.collections.generic.ienumerable<ecs.features.complaints.complaint>' 'system.collections.generic.list<ecs.features.complaints.complaint>'. explicit conversions exists (are missing cast?)" compiler error

i don't know how use condition there. please me. thank in advance concern.

datas list<complaint> try reassign ienumerable<complaint> where statement. add tolist() after maintain type,

or declare datas ienumerable<complaint>

ienumerable<complaint> datas = new list<complaint>(result.data.items);

Comments

Post a Comment

Popular posts from this blog

javascript - WinJS appendTextAsync producing scheduler errors -

im trying implement logger in uwp app (windows 10) following code in both this , this answers. i'm afraid in both cases end getting scheduler ( winjs.utilities.scheduler ) errors @ random times (couldn't establish pattern). main problem the application freezes sometimes , suspect due log implementation because final line reads transitioning job (1) from: running to: blocked when happens. i messages like transitioning job (1) from: blocked_waiting to: cooperative_yield transitioning job (1) from: cooperative_yield to: scheduled in middle of execution, varying states. initialization method this.init = function () { let logger = new winjs.promise(function (complete) { let = new date(); let logfilename = `log-${now.getdate()}-${now.getmonth() + 1}-${now.getfullyear()}.log`; localfolder .createfolderasync("logs", windows.storage.creationcollisionoption.openifexists) .then(fun...
Read more

minify - Minimizing css files -

i want know how css files can minimized. currently, using external sites css minifier compress css files. however, after removing whitespaces, comments, etc, file sizes reduced 10-15%. how frameworks bootstrap manage make minimized versions kilobytes. as example, css is: body { background-color: #ff0; } the reduction goes 28 bytes 22 bytes other css files have lot more characters still smaller this. actually minifying code means it's remove thing code white space characters new line characters comments block delimiters it reduces amount of code has transferred on web , speed site load fastly.but unreadable format.
Read more

Sockets with kotlin -

i looking develop application in kotlin uses sockets, unfortunately kotlinx sockets broken , not far connect current kotlin 1.1 co-routines. (i see noted unanswered issue on github @sundwarf on july 16 already) specifically, sample code kotlinx.sockets uses connect in form: asocket().tcp().connect(inetsocketaddress(inetaddress.getbyname("google.com"), 80)) which fails noted trace here . i looking either sample of connect work, or recommendation of alternate package kotlix.sockets. there many kotlin apps making use of sockets, either there alternatives kotlinx.sockets or there way around connect problem.
Read more