vb.net - Dual check box selection vb / winform -

-

i after little bit of help:

i have datagridview control add couple of columns (as check boxes) in order select multiple rows. when select first checkbox column want second selected automatically, can de-selected if required. , if first checkbox deselected, 2nd auto deselected too.

i have working following code:

private sub dgvbikeavailability_cellcontentclick(sender system.object, e system.windows.forms.datagridviewcelleventargs) handles dgvbikeavailability.cellcontentclick      debug.print("row index = " + e.rowindex.tostring + ". column index = " + e.columnindex.tostring + ". column name = ")     'debug.print()     'when bike selected, helmet automatically selected, can deselected if customer requires     if e.columnindex = 0         dgvbikeavailability.rows(e.rowindex).cells(0).value = not dgvbikeavailability.rows(e.rowindex).cells(0).value         dgvbikeavailability.rows(e.rowindex).cells(1).value = dgvbikeavailability.rows(e.rowindex).cells(0).value     end if  end sub

unfortunately, wen datagridview refreshed, column indexes incremented, , column indexes 2 check box columns 2 , 3.

i able refer them name. declared in sub refreshes datagridview:

colbikeselectioncheckbox.headertext = "select bike"     colbikeselectioncheckbox.name = "colselectbike") colhelmetcheckbox.name = "colselecthelmet" dgvbikeavailability.columns.add(colhelmetcheckbox)

but system.windows.forms.datagridviewcelleventargs class not allow me select column name.

any ideas , suggestions appreciated!

edit: more in depth code segment:

 private sub frmbikehire_load(sender system.object, e system.eventargs) handles mybase.load     refreshgrid()     getstaffmember() end sub  'loads , refreshes dgv private sub refreshgrid()     dim integer      'initially fill in rental dates current day     txtdatefrom.text = cstr(monthcalendar1.selectionrange.start)     txtdateto.text = cstr(monthcalendar1.selectionrange.end)      'grab data db, set dgv datasource     startdate = cstr(monthcalendar1.selectionrange.start)     enddate = cstr(monthcalendar1.selectionrange.end)     dtbikeavailability = sqlfuncdb_getdatatable("select * tb_bikedetail bikeid not in (select distinct bikeid tb_bikemovements bikemovementdate between '" + func_convertdatesqlserver(startdate) + "' , '" + func_convertdatesqlserver(enddate) + "') , bikeid not in (select tb_bikemovements.bikeid tb_bikemovements join (select bikeid, max(bikemovementdate) bmd tb_bikemovements bikemovementdate < '" + func_convertdatesqlserver(startdate) + "' group bikeid) lastmove on lastmove.bikeid=tb_bikemovements.bikeid , lastmove.bmd=tb_bikemovements.bikemovementdate bikemovementtype = '0')")     dvbikeavailability = new dataview(dtbikeavailability)     dgvbikeavailability.datasource = dvbikeavailability      'switch off columns     = 0 dgvbikeavailability.columns.count - 1         dgvbikeavailability.columns(i).visible = false     next      'displays relevant column(s)     dgvbikeavailability.columns("bikename").visible = true     dgvbikeavailability.columns("bikename").headertext = "bike name"     dgvbikeavailability.columns("bikestyle").visible = true     dgvbikeavailability.columns("bikestyle").headertext = "bike style"     dgvbikeavailability.columns("bikecolour").visible = true     dgvbikeavailability.columns("bikecolour").headertext = "bike colour"      'remove line program deployment     dgvbikeavailability.columns("bikeid").visible = true     dgvbikeavailability.columns("bikeid").headertext = "bike number"      'add new check box column selecting bike      dim colbikeselectioncheckbox new datagridviewcheckboxcolumn     colbikeselectioncheckbox.datapropertyname = "propertyname"     colbikeselectioncheckbox.headertext = "select bike"     colbikeselectioncheckbox.name = "colselectbike"     dgvbikeavailability.columns.add(colbikeselectioncheckbox)      'add new column selecting helmet - consider adding default setting     dim colhelmetcheckbox new datagridviewcheckboxcolumn     colhelmetcheckbox.datapropertyname = "propertyname"     colhelmetcheckbox.headertext = "helmet?"     colhelmetcheckbox.name = "colselecthelmet"     dgvbikeavailability.columns.add(colhelmetcheckbox)      dgvbikeavailability.autosizecolumnsmode = datagridviewautosizecolumnsmode.fill  end sub  private sub monthcalendar1_datechanged(sender system.object, e system.windows.forms.daterangeeventargs) handles monthcalendar1.datechanged     refreshgrid() end sub  private sub dgvbikeavailability_cellclick(sender object, e     system.windows.forms.datagridviewcelleventargs) handles dgvbikeavailability.cellclick     debug.print("row index = " + e.rowindex.tostring + ". column index = " + e.columnindex.tostring + ". column name = " + dgvbikeavailability.rows(e.rowindex).cells("colselectbike").owningcolumn.tostring)      if dgvbikeavailability.columns(e.columnindex).name = "colselectbike"         dgvbikeavailability.rows(e.rowindex).cells("colselectbike").value = not dgvbikeavailability.rows(e.rowindex).cells("colselectbike").value         dgvbikeavailability.rows(e.rowindex).cells("colselecthelmet").value = dgvbikeavailability.rows(e.rowindex).cells("colselectbike").value     end if  end sub

i unsure why doesn't work. each time calendar control changed refreshes datagridview, increasing column index.

you can use column index provided datagridviewcelleventargs class retrieve column , name compare.

so like:

if dgvbikeavailability.columns(e.columnindex).name == "colselectbike"     ' logic here end if

for referencing columns within code toggle checkboxes, can happily use names, , in fact not need index provided event args. event args index appears used check 1 of desired columns selected.

dgvbikeavailability.rows(e.rowindex).cells("colselectbike").value = not dgvbikeavailability.rows(e.rowindex).cells("colselectbike").value dgvbikeavailability.rows(e.rowindex).cells("colselecthelmet").value = dgvbikeavailability.rows(e.rowindex).cells("colselectbike").value

although code above should work appears odd happening grid. quick solution instead of using .add() use .insert() method of datagridview, provided index parameter, allowing directly control column goes.


Popular posts from this blog

How to calculate SNR of signals in MATLAB? -

-
i've encountered simple, yet fundamental problem on calculating snr: there several signals : s1 = original , pure clean signal without noise. n1 = white gaussian noise going added s1. s2 = s1 + n1 (the noisy signal before performing noise-reduction algorithm) s3 = noise-reduced signal (after performing noise reduction algorithm) n2 = s3 - s1 (the amount of noise after performing noise-reduction algorithm) now want compare snr before , after performing noise-reduction algorithm. which signals should consider snr_before!? s1/n1 or s2/n1 ? which signals should consider snr_after!? s3/n1 or s3/n2 ? which commands or functions should use in matlab in order compute snr_before , snr_after? thanks billion putting time on helping me. what know calculating snr before : snrbeforenoise = mean( signal .^ 2 ) / mean( noise .^ 2 ); and snr after : residual_noise = signal - noise_reduced_signal; snr_after = mean( signal .^ 2 ) / mean( residual_noise .^ 2...
Read more

c# - Attempting to upload to FTP: System.Net.WebException: System error -

-
i have api takes in xml , uploads files based on information in xml. uploads on schedule (also xml), , have tested surrounding , know works. i getting error 40% of time on first file attempt upload in each time cycle (time cycle = 45 minutes files, 30 minutes others). here code upload: try { loggerftp.log("uploading file: " + filename, false); // create request. ftpwebrequest request = (ftpwebrequest)webrequest.create(appsettingsftp.ftpurl + @"/" + filename); request.method = webrequestmethods.ftp.uploadfile; request.timeout = 6000000; //set 100 minutes //request.timeout = -1; //set infinite // add login credentials. request.credentials = new networkcredential(appsettingsftp.ftplogin, appsettingsftp.ftppassword); // grab file contents. streamreader sourcestream = new streamreader(appsettingsftp.uploadfiledirectory + filename); byte[] filecontents = encoding.utf8.getbytes(sourcestream.readtoend()); sourcest...
Read more

ios - UISlider customization: how to properly add shadow to custom knob image -

-
Image
i need place custom knob image shadow uislider. far have image of 38x38, of there region defines shadow of knob. now while using image, when slide knob extreme ends actual knob not able cover end points, hence end points visible under transparent region of knob image this code using customize uislider uiimage *slidebtimg = [uiimage imagenamed:sliderknobimg]; [self.ratingslider setthumbimage:slidebtimg forstate:uicontrolstatenormal]; [self.ratingslider setthumbimage:slidebtimg forstate:uicontrolstatehighlighted]; how can implement custom knob shadow beneath it, covering end points?? look inside uislider.h , there methods let customize slider knob , track needed. (ios 2.0 , above) // lets subclass lay out track , thumb needed - (cgrect)minimumvalueimagerectforbounds:(cgrect)bounds; - (cgrect)maximumvalueimagerectforbounds:(cgrect)bounds; - (cgrect)trackrectforbounds:(cgrect)bounds; - (cgrect)thumbrectforbounds:(cgrect)bounds trackrect:(cgrect)rect value:...
Read more