Solved

check if combo box has selection vb.net

Posted on 2016-08-01
5
270 Views
Last Modified: 2016-08-01
i have 3 combo boxes on a form  in vb.net. the 3rd combo needs the selection from both of the previous. How do i check that both cb1 and 2 have items selected?
there is no order of selection the user can change 1 or 2 in either order as long as i can make cb3 respond
0
Comment
Question by:PeterBaileyUk
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 

Author Comment

by:PeterBaileyUk
ID: 41737456
I just wrote this
  If (String.IsNullOrEmpty(CBNote.SelectedItem)) And (String.IsNullOrEmpty(CBScaleType.SelectedItem)) Then
            Call GetCBData("usp_GetChords")
        End If

not sure if its correct way
0
 

Author Comment

by:PeterBaileyUk
ID: 41737457
apart from the blinding obvious that i need an else and need to move the call to the correct part
0
 
LVL 63

Accepted Solution

by:
Fernando Soto earned 500 total points
ID: 41737468
You can use the ComboBox.SelectedIndex property to know if a item has been selected in the ComboBox. It returns the zero base index of the selected item or if no item has been selected -1.
0
 

Author Closing Comment

by:PeterBaileyUk
ID: 41737472
I did try and ceremoniously failed. thx again
0
 
LVL 63

Expert Comment

by:Fernando Soto
ID: 41737474
Did you get it working?
0

Featured Post

Revamp Your Training Process

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Well, all of us have seen the multiple EXCEL.EXE's in task manager that won't die even if you call the .close, .dispose methods. Try this method to kill any excels in memory. You can copy the kill function to create a check function and replace the …
Microsoft Reports are based on a report definition, which is an XML file that describes data and layout for the report, with a different extension. You can create a client-side report definition language (*.rdlc) file with Visual Studio, and build g…
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…
Are you ready to implement Active Directory best practices without reading 300+ pages? You're in luck. In this webinar hosted by Skyport Systems, you gain insight into Microsoft's latest comprehensive guide, with tips on the best and easiest way…

739 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question