List.Count does not work

This issue has been moved from a ticket on Developer Community.

---

Create a standard Blazor WASM project. Change the code of the counter Page to the below code Run it, watch it just completely crash when trying to load the page. See attachments

@page "/counter"

@try
{
	@for (int i = 0; i < NumberBiggerThanListSize; i++)
	{
		@if (Strings.Count < i)
		{
			<div>@Strings[i]</div>
		}
		else
		{
			<div>@i is outside the bounds </div>
		}
	}
}
catch (Exception ex)
{
	<div>@ex. ToString()</div>
}

@code {
	private List<string> Strings = new List<string> { "String one", "String 2" };
	private int NumberBiggerThanListSize = 5;
}

---

Original Comments

Feedback Bot on 7/30/2020, 07:28 PM:

We have directed your feedback to the appropriate engineering team for further evaluation. The team will review the feedback and notify you about the next steps.

---

Original Solutions

(no solutions)

[mrpmorris]

Your check is wrong. It should be if (i < Strings.Count)

Otherwise for the third iteration of your loop (i = 2) you’ll see that 2 < 5 and your code will try to access index 2 of your list, which doesn’t exist because indexes are zero based.

[mrpmorris]

Hi @kevonh

I would recommend ignoring this ticket and posting a new one yourself. Please try to make the repro as simple as possible, comments inline with the code are useful to draw attention to caveats (for example). Also, I don’t think anyone thought your question was stupid 👍