sql - Update grid from a query -


i have visual basic 2010 application uses datagridview display list of frequencies microsoft access 2010 database. application uses bindingnavigationpostionitem allow navigation though table.

the move next , move previous buttons move , down list. cool thing is, this, have code sends frequency , mode yeasu radio , radio set freq/mode.

this works great but, if try filter datagridview service field, id field becomes blank , navigation not work.

here code runs after select want filter , click filter button:

private sub button1_click(byval sender system.object, byval e system.eventargs) handles button1.click     dim cmbox1 string     cmbox1 = combobox1.text      myconn = new oledbconnection     myconn.connectionstring = connstring     ds = new dataset     tables = ds.tables     da = new oledbdataadapter("select * hfutil service = '" & cmbox1 & "'", myconn) '      da.fill(ds, "hfutil")     dim view new dataview(tables(0))       source1.datasource = view     datagridview1.datasource = view     bindingnavigator1.bindingsource = source1      datagridview1.refresh()     bindingnavigator1.refresh()     '=========================================================             listbox1.items.clear()     listbox1.text = ""      each dr datarow in ds.tables(0).rows         dim sitemtemp string         sitemtemp = string.format("{0} {1} {2}", dr("freq"), dr("mode"), dr("desc"))         listbox1.items.add(sitemtemp)      next      combobox2.items.clear()     combobox2.text = ""     each dr datarow in ds.tables(0).rows          dim sitemtemp string         sitemtemp = string.format("{0} {1} {2}", dr("freq"), dr("mode"), dr("desc"))         combobox2.items.add(sitemtemp)      next  end sub

the difference between code , code runs on form load - clause in data adapter.

what doing wrong?

i don't see in code apply filter. so, lets pretend second load whole table dataset. next thing, either use dataset.defaultview or create custom dataview , assign datasource property - did this.

now, have apply row filter data view use

view.rowfilter = "service = '" & cmbox1 & "'"

at point should see subset of records , nothing should happen id field. because data doesn't change.

i have suspicion, changing view somewhere , why have problems.


Comments

Post a Comment

Popular posts from this blog

searchKeyword not working in AngularJS filter -

i writing app using angularjs on front end. want search through table word/field; 1 search box everything. according article here: http://hello-angularjs.appspot.com/searchtable can use filter: searchkeyword this. this code, , not working expected. <label>search: <input ng-model="searchkeyword"></label> <table ng-repeat="post in posts | orderby: sort | filter: searchkeyword"> <tr> <td> {{index(post)}} </td> <td> {{post.title}} </td> <td> {{post.author}} </td> <td> {{post.content}} </td> <td> {{post.date | date: "d/m/yyyy"}} </td> </tr> </table> what should do? thank you try this: controller $scope.posts = [ {title:'title one', author:'author one', content: 'content one'}, {title:'title two', author:'author two', content: 'cont...
Read more

sequelize.js - Sequelize: sort by enum cases -

i have model ( article ) field (the name type ) of type enum('source', 'translated') , return 1 article ordered type field. source articles should returned before translated articles. like: article.findone(order: [ { type: [ 'source', 'translated' ] } ]); unfortunately there appears no built-in solution sorting enums. instead have sort by case , couldn't find documentation on how sequelize. what conventional approach here? sorting case hard in sequelize, sort field (the second answer in linked post) should possible: order: sequelize.fn('field', sequelize.col('type'), 'source', 'translated') it's supported mysql far know though
Read more

user interface - how to replace an ongoing process of image capture from another process call over the same ImageLabel in python's GUI TKinter -

i trying use following code create interactive gui changes color-space(hsv, rbg, grayscale etc) on event of button click. display opencv video in tkinter using multiprocessing being new python having problems multiprocessing , attempts on making gui change it's color space on button clicks hangs entire system. on it's implementation highly appreciated. thankyou. below code: import cv2 pil import image,imagetk import tkinter tk import numpy np multiprocessing import process , queue def quit_it(root,process): root.destroy() process.terminate() def black_andwhite(root,process): process.terminate p=process(target=capture_image, args=(5,queue, )) p.start() root.after(0, func=lambda: update_all(root, image_label, queue)) def update_image(image_label, queue): frame = queue.get() = image.fromarray(frame) b = imagetk.photoimage(image=a) image_label.configure(image=b) image_label._image_cache = b root.update() def update_all(root...
Read more