c# - Load a form without showing it -

-

short version: want trigger form_load() event without making form visible. doesn't work because show() ignores current value of visible property:

tasksform.visible = false; tasksform.show();

long version: have winforms application 2 forms: main , tasks. main form displayed. user can either click button open tasks form, or click buttons run task directly without opening tasks form.

when user asks run task directly, i'd call public methods on tasks form without showing it. unfortunately, task logic depends on stuff happens in form_load() event. way can find trigger form_load() call show(). best i've been able show form in minimized state:

tasksform.windowstate = formwindowstate.minimized; tasksform.show();

i suppose cleanest solution pull tasks logic out of tasks form , controller class. can use class main form , tasks form, , load tasks form when need visible user. however, if it's easy thing load form without displaying it, smaller change.

i totally agree rich b, need @ placing application logic rather trying cludge winforms mechanisms. of operations , data tasks form exposing should in separate class kind of application controller or held main form , used tasks form read , display data when needed doesn't need form instantiated exist.

it seems pain rework it, you'll improving structure of app , making more maintainable etc.


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