Unexpected “foreach” keyword after “@” character

Inside your using block, Razor is expecting C# source, not HTML.

Therefore, you should write foreach without an @.

Inside an HTML tag, Razor expects markup, so you would use @.

For example:

<div>
    <!-- Markup goes here -->
    @if (x) {
        //Code goes here
        if (y) {
            //More code goes here
            <div>
                <!-- Markup goes here -->
                @if (z) { }
            </div>
        }
    }
</div>

You only need an @ if you want to put code where it’s expecting markup, or if you want to write output anywhere.

To put non-tag-like markup where it’s expecting code, use @: or <text>.