c# - LINQ to Entities does not recognize the method 'Int32 -

- 

public actionresult readxmldevices(int groupid) {                  var query = k in xmlentities.unassigneditems     k.devoracc == true && k.group == groupid     select k;      var view_query = in query                      select new getfreedevices                      {                          marticlenumber = i.articlenumber,                          mfirmware = i.firmware,                          mgroup = i.group,                          mname = i.name,                          msoftware = i.softwareversion,                          sa = getnumberofdevices(i.articlenumber,2),                          sth = getnumberofdevices(i.articlenumber,3),                          sasth = getnumberofdevices(i.articlenumber,7)                      };     return partialview(view_query); }  public int getnumberofdevices(string artno,int loc) {     var num_dev = (from k in xmlentities.deviceview                    k.reserved == false && k.sold == false && k.locationnameid == loc && k.articlenumber == artno                    select k).count();     return num_dev; }

error:

linq entities not recognize method 'int32 getnumberofdevices(system.string, int32)' method, , method cannot translated store expression. how resolve this???

you can split query in 2 make sure list in-memory before calling getnumberofdevices() method. can make query in-memory converting results list, or in case list<getfreedevices>. way, linq entities not have translations , xml , can use getnumberofdevices() method.

var view_query = (from in query      select new getfreedevices      {         marticlenumber = i.articlenumber,         mfirmware = i.firmware,         mgroup = i.group,         mname = i.name,         msoftware = i.softwareversion       }).tolist(); var result_query = in query      select new getfreedevices      {         marticlenumber = i.marticlenumber,         mfirmware = i.mfirmware,         mgroup = i.mgroup,         mname = i.mname,         msoftware = i.msoftware,         sa = getnumberofdevices(i.marticlenumber,2),         sth = getnumberofdevices(i.marticlenumber,3),         sasth = getnumberofdevices(i.marticlenumber,7)      }; return partialview(result_query);

please note last statement requires partialview accept list or ienumerable instead of iqueryable.


Comments

Post a Comment

Popular posts from this blog

c++ - How do I get a multi line tooltip in MFC -

-
right now, have tool tip pops when hover on edit box. problem tool tip contains multiple error messages , in 1 long line. need have each error message on own line. error messages contained in cstring new line seperating them. my existing code below. bool ontooltiptext(uint, nmhdr* pnmhdr, lresult* presult) { assert(pnmhdr->code == ttn_needtexta || pnmhdr->code == ttn_needtextw); // need handle both ansi , unicode versions of message tooltiptexta* pttta = (tooltiptexta*)pnmhdr; tooltiptextw* ptttw = (tooltiptextw*)pnmhdr; // tchar szfulltext[256]; cstring strtiptext=_t(""); uint nid = pnmhdr->idfrom; if (pnmhdr->code == ttn_needtexta && (pttta->uflags & ttf_idishwnd) || pnmhdr->code == ttn_needtextw && (ptttw->uflags & ttf_idishwnd)) { // idfrom hwnd of tool nid = ::getdlgctrlid((hwnd)nid); } //m_errprojaccel[ch] contains 1 or more error messages each...
Read more

asp.net - In javascript how to find the height and width -

-
i having .aspx , masterpage page. in masterpage loading aspx page . in aspx page design using generating table structure using code-behind server in javascript how find height , width . regards, kumar if you're looking table height , width, should it var tbl = document.getelementbyid('tbldemo'); alert(tbl.offsetwidth + '\n' + tbl.offsetheight);
Read more

c# - DataTable to EnumerableRowCollection -

-
i have datatable according client requirement can contain invalid date "00/00/1999",null,empty string.(typed datset) when collect them enumerables wish convert of invalid forms empty string. (i.e) enumerablerowcollection<datarow> query = order in _table.asenumerable() select new { orderdate= string.isnullorempty(convert.tostring(order.field<datetime>("orderdate")) || (how check date invalid date) ? string.empty : order.field<datetime>("orderdate") } how check whether date valid date or not? datetime.tryparse...like given current code: datetime date; enumerablerowcollection<datarow> query = order in _table.asenumerable() select new { orderdate= string.isnullorempty(convert.tostring(order.field<datetime>("orderdate")) || !datetime.tryparse(convert.tostring(order.field<datetime...
Read more