Skip to content

Fix IList.Insert example to handle index == Count case #12285

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
gewarren merged 2 commits into from
Feb 9, 2026
+2 −2
Merged

Fix IList.Insert example to handle index == Count case #12285

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
40d380c
Initial plan
Copilot Feb 6, 2026
168b19a
Fix IList Insert to append when index equals Count
Copilot Feb 6, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion snippets/csharp/System.Collections/IList/Overview/Program.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -103,7 +103,7 @@ public int IndexOf(object value)

public void Insert(int index, object value)
{
if ((_count + 1 <= _contents.Length) && (index < Count) && (index >= 0))
if ((_count + 1 <= _contents.Length) && (index <= Count) && (index >= 0))
{
_count++;

Expand Down
2 changes: 1 addition & 1 deletion snippets/visualbasic/System.Collections/IList/Overview/Program.vb
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,3 +1,3 @@
'<snippet01>
Imports System.Collections

Expand Down Expand Up @@ -90,7 +90,7 @@

Public Sub Insert(ByVal index As Integer, ByVal value As Object) Implements IList.Insert

If _count + 1 <= _contents.Length AndAlso index < Count AndAlso index >= 0 Then
If _count + 1 <= _contents.Length AndAlso index <= Count AndAlso index >= 0 Then
_count += 1

For i As Integer = Count - 1 To index Step -1
Expand Down
Loading