Escaping the single quote character

In the code below, I'm building a string in my controller. In this string I use the single quote character. I need to protect this character before rendering it. First, I try something like L\'affaire but it doesn't work (because the quote character is already used in my helper, see below). I succeed with L& # 3 9;affaire (escape character for single quote, without spaces) but maybe there is a better way to proceed?

In my controller, I prepare a string like this:

        var builderAnchor = new TagBuilder("a");
        builderAnchor.MergeAttribute("href", "#");
        builderAnchor.InnerHtml = "Annuler";

        var builderText = new StringBuilder();
        builderText.Append("L'affaire " + affaire.IdAffaire + " a été supprimée. ");
        builderText.Append(builderAnchor);

        sessionWrapper.Notification = new HtmlString(builderText.ToString());

Next, I have a helper called from a view like this:

    public static IHtmlString ShowNotification(this HtmlHelper helper)
    {
        //...
        returnedValue = "yellowNoti开发者_StackOverflowfication('" + helper.Encode(sessionWrapper.Notification) + "')";


        return new HtmlString(returnedValue);
    }

Finally, all of this stuff produce the html like below:

yellowNotification('L'affaire 12345 a été supprimée');

Thanks anyway.

I would recommend you using the JavaScriptSerializer class:

public static IHtmlString ShowNotification(this HtmlHelper helper)
{
    //...
    var serializer = new JavaScriptSerializer();
    var value = serializer.Serialize(sessionWrapper.Notification);
    returnedValue = string.Format("yellowNotification({0})", value);
    return new HtmlString(returnedValue);
}

This will ensure that no matter what characters the Notification string contains it will be properly passed to the yellowNotification function.

Also I don't quite understand what's the relation of the first code snippet you have shown to the second but what is sure that such code has no place in a controller.