Custom Tag Helper for rendering a LinkButton-like anchor in ASP.NET Core

LinkButtonTagHelper.cs

[HtmlTargetElement("link-button")]
public class LinkButtonTagHelper : TagHelper
{
    public override void Process(TagHelperContext context, TagHelperOutput output)
    {
        const string HIDDEN_FIELD_ID = "form_marker";

        output.TagName = "a";
        output.Attributes.SetAttribute("onclick",
            $@"document.getElementById(""{HIDDEN_FIELD_ID}"").form.submit();");

        output.PostElement.SetHtmlContent($@"<input type=""hidden"" id=""{HIDDEN_FIELD_ID}"" />");
    }
}