How do I create an array of comboboxes? (Vb.net)

Question

0.00/5 (No votes)

See more:

Hello!
I need to create a serie of comboboxes at runtime, so I made an array of comboboxes, but when I change one of them (both at runtime or via code), all the others change too... I need them to be separate.
I created other controls and they work properly instead.
I don't understand why if I change one of them (select an item) all the other combobox displays the same item.
Thank you very much, I appreciate any help!

What I have tried:

Dim ListaDiametri(50) As ComboBox
....

For j = 1 To psNC
                    LD(j) = New ComboBox
                    With LD(j)
                        .Name = String.Format("LD{0}", j)
                        .Tag = j
                        .Font = LD0.Font
                        .Width = LD0.Width
                        .Left = toto - LD(j).Width / 2
                        .Top = PSy4A
                        .DataSource = LD0.DataSource
                        AddHandler .KeyPress, AddressOf PassD
                        AddHandler .Enter, AddressOf Diven
                        AddHandler .Leave, AddressOf Camb
                    End With
                    Me.Controls.Add(LD(j))
                    LD(j).BringToFront()
                    LD(j).Text = Fi(j)
next

Posted 1-Jul-19 4:48am

Member 11182870

Updated 1-Jul-19 5:24am

Add a Solution

Comments

Maciej Los 1-Jul-19 16:18pm

I do not believe. What's the code of [PassD], [Diven] and [Camb] event handlers?

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Gerry Schmitz · Answer 1 · 2019-07-01T05:25:00

Solution 1

With the same data sources AND event handlers, I'd expect they would all behave the same without more discernment.

Posted 1-Jul-19 5:25am

Gerry Schmitz

Comments

Member 11182870 8-Jul-19 4:40am

Thank you Gerry, but even without the event handler it happens... anyway, the enter and leave events just change the colours, the keypress act on another texbox. I'd like to use the "j" index to handle the different comboboxes. I also changed the datasource.
But if I change one, the others change too.
Using numericupdown it works...they don't change all together.
Thank you

pdoxtader 9-Jul-19 9:28am

You're binding them all to the same data source.

I just created a test project with your code and created new handlers for each one using anonymous subs, and I didn't have the problem. It has to be because you have them all bound to the same data source.

Member 11182870 31-Jul-19 4:16am

Ok, thank you very much, I'll try with different datasource.