How to get the HTML id generated by asp.net MVC EditorFor

Question

I use the HTML Helpers to render my fields:

<%=Html.EditorFor(m => m.User.Surname)%>

and the output would be something like this:<

Answer 1

I've followed the instructions of Mac's answer here and I've built my own custom extension:

public static class HtmlHelperExtensions
{
    public static string HtmlIdNameFor(
        this HtmlHelper htmlHelper,
        System.Linq.Expressions.Expression> expression)
    {
        return (GetHtmlIdNameFor(expression));
    }

    private static string GetHtmlIdNameFor(Expression> expression)
    {
        if (expression.Body.NodeType == ExpressionType.Call)
        {
            var methodCallExpression = (MethodCallExpression)expression.Body;
            string name = GetHtmlIdNameFor(methodCallExpression);
            return name.Substring(expression.Parameters[0].Name.Length + 1).Replace('.', '_');

        }
        return expression.Body.ToString().Substring(expression.Parameters[0].Name.Length + 1).Replace('.', '_');
    }

    private static string GetHtmlIdNameFor(MethodCallExpression expression)
    {
        var methodCallExpression = expression.Object as MethodCallExpression;
        if (methodCallExpression != null)
        {
            return GetHtmlIdNameFor(methodCallExpression);
        }
        return expression.Object.ToString();
    }
}

I've imported my application's namespace

<%@ Import Namespace="MvcApplication2" %>

and finally I can use my code like this:

<%=Html.HtmlIdNameFor(m=>m.Customer.Name)%>