For loop not returning expected value – C# – Blazor

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Your for loop should contain a local variable like this:

 @for (int i = 0; i < Math.Ceiling((decimal)articleService.ReturnAll().Count() / numPerPage); i++)
    {
       var localVariable = i;

      <li class="page-item"><a class="page-link" onclick="@(() => ReturnPage(localVariable ))">@i</a></li>
    }

This is standard C# behavior where lambda expression @(() => ReturnPage(localVariable )) has access to a variable and not to the value of the variable. You have to define a variable which is local to the for loop, otherwise your lambda expression will always call ReturnPage(i) and i equals Math.Ceiling((decimal)articleService.ReturnAll().Count() at the end of the loop.

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