Problem for using Asp.net c# and html mixing code

Question

I tried to use below code in asp.net but there is error in html tags like and and say it could not find begin tag. but begin tag is in first if. the errors are in between line 44 to 52.

@{
    string n = "";
    int j = 0;
    foreach (var item in Model.RelatedProduct)
    {
        if (item.ProductId != n)
            j = 1;
        else
            j = 0;            
        if(j==1)
        {
            <div class="modal fade" id="myModal" role="dialog">
                <div class="modal-dialog modal-dialog-centered " role="document">
                    <div class="modal-content">
                        <div class="modal-header">
                            <h5 class="modal-title">@item.CatalogDescription</h5>
                            <button class="close" type="button" data-dismiss="modal">
                                <span aria-hidden="true">&times;</span>
                            </button>
                        </div>
                        <div class="modal-body">
                            <table class="table table-hover">
                                <thead class="thead-dark">
                                    <tr>
                                        <td>Customer</td>
                                    </tr>
        }
        @if(j == 1 || j == 0)
        {
                                    <tr>
                                        <td>@item.CustomerName</td>
                                        <td>@item.Price</td>
                                    </tr>
        }
        @if(j==1) 
        { 
                            </table>
                        </div>
                        <div class="modal-footer">
                             <button class="btn" data-dismiss="modal">Cancel</button>
                        </div>
                     </div>
                  </div>
                </div>
        }
    }
}

and also i tried to remove @ from beginning of if but the error don't remove.

Answer 1

I have seen your code and it seems an obvious mistake in the Code mix-up that people do is, put @ sign multiple times in the code, while you can see the curly brace before the if condition, you were not supposed to put an @ sign to specify the code, compiler thinks it is already code instead of markup. See:

Simply, just remove the @ sign from these if conditions and see if error still disturbs you.

Plus, I must say your html is a little not aligned well, and you got some closing tags missing such as the </thead> tag.