CODEWITHSUNDEEP
c#math
Dan Hall
Dan Hall

Reputation: 1534

Calculating which multiplication a scroll position falls into

I need to monitor the scroll of a FlowLayoutPanel to see if the scroll is dropped in certain ranges, here's and example:

How might I calculate for a dynamic scroll length which number reference the scroll has fallen under?

An example is if the scroll is at 850 then that's a 3, at 450 then that's a 2. Basically each 405 multiplication increases the number.

Here's where I would need to implement the check.

private void ChangedParentFlowPanel_Scroll(object sender, ScrollEventArgs e)
{
   int NewPos = e.NewValue;
   //Check here to see which multiplication of 405 the NewPos falls under 1,2,3,4....

}

Upvotes: 1

Views: 40

Answers (2)

space junk
space junk

Reputation: 139

private void ChangedParentFlowPanel_Scroll(object sender, ScrollEventArgs e)
{
   int NewPos = e.NewValue;
   int ScrollCategory = (NewPos - 1) / 405 + 1;

}

I think this would work for what you're trying to do. It's got to be integer division or it won't work, naturally.

Upvotes: 1

Sergey Berezovskiy
Sergey Berezovskiy

Reputation: 236228

Simple integer division will do the job:

int multiplication = (NewPos - 1) / 405 + 1;

I would also recommend you to use named variable instead of magic number 405 to make your code clear for other programmers. And use camelCase names for local variables.

Upvotes: 3

Related Questions