Very urgent!!!!the problem of index out of range

how to solve the this problem when the warning is inside the component?

"1. Solution exception: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index"

how to solve the " Index was out of range"?
could you give e the answer?

1. Solution exception:Index was out of range. Must be non-negative and less than the size of the collection.Parameter name: index

Replies to This Discussion

Permalink Reply by Raul Matagringo on July 2, 2015 at 8:23am

if you have a list with 5 items and you try to pick the sixth one = index out of range

first item has index 0 if you try to pick item at index -1 = index out of range

Permalink Reply by peter fotiadis on July 2, 2015 at 8:45am

And in case that you work via code this all times classic (and a "bit" barbaric) approach always works:

List<Point3d> pList = new List<Point3d>(){p1,p2,p3,p4,p5,p6};

for(int i = 0, i<pList.Count;i++){

Point3d pCurrent = pList[i];

Point3d pNext;

try{pNext = pList[i+1];} catch{pNext = pList[0];} // meaning the obvious, he he

Line line = new Line(pCurrent, pNext);

... blah, blah ...

}

Permalink Reply by Joyce Ho on July 2, 2015 at 8:49am

could you send me the step?
because i have never learnt the script and VB

Permalink Reply by Joyce Ho on July 2, 2015 at 8:55am

how to use this script?

Permalink Reply by Joyce Ho on July 2, 2015 at 9:11am

is this code suitable for all case?

Permalink Reply by peter fotiadis on July 2, 2015 at 9:51am

NO this was just the simplest possible demo of using the try/catch way.

Since you are unfamiliar with coding > FORGET it

Permalink Reply by Joyce Ho on July 2, 2015 at 9:17am

peter fotiadis peter fotiadis

Permalink Reply by peter fotiadis on July 2, 2015 at 9:49am

Er... solving something without that something is rather silly.

Moral: POST your definition (including data in Rhino file or internalized)

Permalink Reply by Joyce Ho on July 2, 2015 at 9:53am

could you upload your vb component?
but i dont know why many fails happen here.

Permalink Reply by Joyce Ho on July 2, 2015 at 9:18am

could you teach me please???

thank you!
tomorrow is my deadline!

Permalink Reply by Daniel González Abalde on July 2, 2015 at 9:31am

Rutten added a function to wrap a number within a size.

Private Sub RunScript(ByVal list As List(Of Object), ByVal index As Integer, ByRef A As Object)

Dim wI As Integer = GH_MathUtil.WrapInteger(index, list.count)
A = list(wI)
End Sub

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