ASP.NET MVC2 custom dateTime format helper

Question

I have a question on how to create custom View Helpers. I would like, in my Index View, to change my default dateTime format. I want to write my own Helper as I thought it was easy like in e.g. PHP. I did:

Created Class:

public static class CustomViewHelpers
{
    public static MvcHtmlString returnDateString(string format, DateTime date)
    {
        return MvcHtmlString.Create(date.ToString(format));
    }
}

I added it to the web.config,

I used it like that:

 <p><em>
    Birth date</em>
    <%: CustomViewHelpers.returnDateString("D", Model.Birth_Date); %></p>

But I always get the error:

Compilation Error

Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: CS1026: ) expected

But I think it is a wrong error because when I remove my line it works correctly and I see there are these ")" marks. Can you explain to me why this kind of helper does not work? Maybe you know a good tutorial on how to write your own helpers in ASP.NET MVC2?

SLaks · Accepted Answer · 2011-06-14 15:26:02Z

5

Remove the ; from the call to the helper.

<%: ... %> hold expressions, not statements, and should not have semicolons.

answered Jun 14, 2011 at 15:26

SLaks

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7 Comments

canimbenim Over a year ago

When I remove this ; I have: Error 2 The best overloaded method match for 'Adventure_v1.Helpers.CustomViewHelpers.returnDateString(string, System.DateTime)' has some invalid arguments But I do not understand why?

canimbenim Over a year ago

Yes I can read (O_o) the error message but first parameter is "D" so it is string and the second it is DateTime in my database so I dont understand why it returns this error. Maybe in view it is changes somehow but for what?

canimbenim Over a year ago

Ok, I do not know why but it does not have DateTime type in view, but I made it work. Thanks for sarcasm rather to explain why it is like this... But thanks anyway. I did: DateTime.Parse(Model.Birth_Date.ToString())

SLaks Over a year ago

That wasn't sarcasm. The first error message doesn't have any useful information. I suspect that your model type was wrong, but I need other error message.

canimbenim Over a year ago

By the way, it is interesting for me why ; is so important and why when I had it, I did not have this error message. Thanks SLaks once again! <shame> Sorry I missed "other". Sorry once again for misunderstanding

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