set or change a listbox' scrollbar value

Question

1.00/5 (2 votes)

See more:

VB

Visual-Studio

Trying to control a listbox scrollbar using values generated from a trackbar control

Posted 11-Jun-15 4:58am

Member 11745330

Add a Solution

Comments

CHill60 11-Jun-15 15:33pm

Try posting your code and explaining what the problem is

[no name] 12-Jun-15 6:39am

Thanks for reply. Will extract code I'm using and post it later.

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)

Jens Madsen, Højby · Answer 1 · 2015-07-27T16:31:00

VB

Private Sub ScrollListBox(box As ListBox, tBar As TrackBar)
     If box Is Nothing OrElse tBar Is Nothing OrElse box.Items.Count < (box.Height \ box.ItemHeight) Then
         Return
     End If
     box.SuspendLayout()
     Dim pct = tBar.Value / (tBar.Maximum - tBar.Minimum)
     Dim pageItems = box.Height \ box.ItemHeight
     Dim lbIndex = Math.Max(0, CInt((pct * box.Items.Count) - (pageItems / 2)))
     box.TopIndex = lbIndex
     box.ResumeLayout()
 End Sub