MVC3 Conditionally disable Html.TextBoxFor()

Question

I have a C# .Net web app. In that app I need to conditionally disable Html.TextBoxFor controls (also Html.DropDownListFor controls) based on who is

Answer 1

I had this same problem and decided to write my own HtmlHelper extension method.

public static MvcHtmlString Disable(this MvcHtmlString helper, bool disabled)
    {
        if (helper == null)
            throw new ArgumentNullException();

        if (disabled)
        {
            string html = helper.ToString();
            int startIndex = html.IndexOf('>');

            html = html.Insert(startIndex, " disabled=\"disabled\"");
            return MvcHtmlString.Create(html);
        }

        return helper;
    }

This will accept a boolean to indicate if the control should be disabled or not. It just appends disabled="disabled" just inside the first > it comes across in a string.

You can use it like below.

@Html.TextBoxFor(model => model.ProposalName).Disable(true)