CODEWITHSUNDEEP
asp.net-mvc-3
Flea
Flea

Reputation: 11284

ViewData is empty when returning view

I am completely baffled by this s I have never came across this. I have a shared view called "Error" which outputs a standard message followed by a custom message:

@model System.Web.Mvc.HandleErrorInfo

@{
    ViewBag.Title = "Error";
}

<h2>
    Sorry, an error occurred while processing your request. @{ ViewData["ErrorMessage"].ToString(); }
</h2>

Inside a controllers catch block I am setting the ViewData to the custom message:

    catch (Exception ex)
    {
        ...
        ViewData["ErrorMessage"] = "This is my custom message";
        return View("Error");
    }

However, when the view is loaded, the ViewData shows my key "ErrorMessage" but never outputs the string.

Upvotes: 2

Views: 1395

Answers (1)

nemesv
nemesv

Reputation: 139758

Your expression does not display anything because you don't write out the ViewData["ErrorMessage"] to the response.

With the @{ ... } you create a razor code block which does not write anything to the output just executes the code what is inside.

To write to the output you need to use the @ sign:

<h2>
    Sorry, an error occurred while processing your request. @ViewData["ErrorMessage"]
</h2>

More info about the razor syntax.

Upvotes: 3

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