C# String.Format - Invalid input string

Question

I have a MVC3 HtmlHelper extension like this:

public static MvcHtmlString ShowInfoBar(this HtmlHelper helper, string message, InfoMessageType messageType)
           


        

Answer 1

Escape your squiggly brackets {{ }} in the format string

String.Format(@"<script type=""text/javascript"">$(document).ready(function () {{ gtg.core.showInfoBar('{0}', '{1}'); }});</script>", message, messageType.ToString().ToLower())

Answer 2

I have tried as below, and its working.

string.Format(@"ExecuteOrDelayUntilScriptLoaded(function () {{ Your function. 

Answer 3

On every brace that isn't a token you must double - so

function() {{

Etc

Also - consider XSS here - is message escaped correctly for inserting into JavaScript?

Answer 4

You need to escape the curly braces:

{{ and }}

String.Format(@"<script type=""text/javascript"">$(document).ready(function () {{ gtg.core.showInfoBar('{0}', '{1}'}}; );</script>", 
              message, messageType.ToString().ToLower())

Answer 5

In my case I used the bracket for JsonP formatting. JsonP requires a '{' too. By escaping the { like this: '{{', my problem was solved.