var is not local. (Blazor)

[Pentadome]

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Describe the bug

A clear and concise description of what the bug is.
@for (var i = 1; i < int_amount_of_pages + 1; i++) { var intpagenr = i; <li class="page-item"><a class="page-link" value="@i" onclick="@(() => SetPageNR( intpagenr.ToString()))"> @i.ToString()</a></li> }

If 'int_amount_of_pages ' is 5, 'i' will always be 6 when given as an argument to 'SetPageNR', Only when you declare a local variable, equate it to 'i' and then give that as an argument is the expected behavior executed.

To Reproduce

Steps to reproduce the behavior:

1. Using this version of ASP.NET Core '...'
   3.0 preview-5
2. Run this code '....'
   see above
3. With these arguments '....'
   see above
4. See error
   unexpected behavior

Expected behavior

A clear and concise description of what you expected to happen.
i is not the max i was + 1, i is what it was when it went through that loop.

Screenshots

If applicable, add screenshots to help explain your problem.

Additional context

Add any other context about the problem here.
Include the output of dotnet --info

[campersau]

The necessity to declare a variable inside your loop is just how C# lambdas work - they bind to a variable, not to the value that was in the variable when the lambda was constructed.

https://github.com/aspnet/Blazor/issues/275#issuecomment-373686979

This is documented here (at the end) https://docs.microsoft.com/en-us/aspnet/core/blazor/components?view=aspnetcore-3.0#event-handling

Other issues:
#10138
#7134
https://github.com/aspnet/Blazor/issues/1562
https://github.com/aspnet/Blazor/issues/1402
https://github.com/aspnet/Blazor/issues/1422
https://github.com/aspnet/Blazor/issues/764
https://github.com/aspnet/Blazor/issues/447
https://github.com/aspnet/Blazor/issues/275

[mkArtakMSFT]

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