Possible bug in ASP.NET MVC with form values being replaced.
- by Dan Atkinson
I appear to be having a problem with ASP.NET MVC in that, if I have more than one form on a page which uses the same name in each one, but as different types (radio/hidden/etc), then, when the first form posts (I choose the 'Date' radio button for instance), if the form is re-rendered (say as part of the results page), I seem to have the issue that the hidden value of the SearchType on the other forms is changed to the last radio button value (in this case, SearchType.Name).
Below is an example form for reduction purposes.
<% Html.BeginForm("Search", "Search", FormMethod.Post); %>
<%= Html.RadioButton("SearchType", SearchType.Date, true) %>
<%= Html.RadioButton("SearchType", SearchType.Name) %>
<input type="submit" name="submitForm" value="Submit" />
<% Html.EndForm(); %>
<% Html.BeginForm("Search", "Search", FormMethod.Post); %>
<%= Html.Hidden("SearchType", SearchType.Colour) %>
<input type="submit" name="submitForm" value="Submit" />
<% Html.EndForm(); %>
<% Html.BeginForm("Search", "Search", FormMethod.Post); %>
<%= Html.Hidden("SearchType", SearchType.Reference) %>
<input type="submit" name="submitForm" value="Submit" />
<% Html.EndForm(); %>
Resulting page source (this would be part of the results page)
<form action="/Search/Search" method="post">
<input type="radio" name="SearchType" value="Date" />
<input type="radio" name="SearchType" value="Name" />
<input type="submit" name="submitForm" value="Submit" />
</form>
<form action="/Search/Search" method="post">
<input type="hidden" name="SearchType" value="Name" /> <!-- Should be Colour -->
<input type="submit" name="submitForm" value="Submit" />
</form>
<form action="/Search/Search" method="post">
<input type="hidden" name="SearchType" value="Name" /> <!-- Should be Reference -->
<input type="submit" name="submitForm" value="Submit" />
</form>
Please can anyone else with RC1 confirm this?
Maybe it's because I'm using an enum. I don't know. I should add that I can circumvent this issue by using 'manual' input () tags for the hidden fields, but if I use MVC tags (<%= Html.Hidden(...) %), .NET MVC replaces them every time.
Many thanks.
Update:
I've seen this bug again today. It seems that this crops its head when you return a posted page and use MVC set hidden form tags with the Html helper. I've contacted Phil Haack about this, because I don't know where else to turn, and I don't believe that this should be expected behaviour as specified by David.
