In asp.net-mvc, How can I insert a class name from my view model for a html.dropdownlistfor

Question

I have the following code in my view:

<%= Html.DropDownListFor(r=>r.Id, Model.MyList, new { @class = "Dropdown hidden" })%>

but now I want to only assign the class "hidden" in certain cases so I want to pass that in from my ViewModel to either add the class or to leave it out.

To solve this, I created a property in my view model called HiddenConditional

  public string HiddenConditional
  {
      get
      {
          return IfCondition() ? "hidden" : string.empty;
      }
  }

but i can't figure out the right syntax to put that into the class attribute. I need something like:

<%= Html.DropDownListFor(r=>r.Id, Model.MyList, new { @class = "Dropdown <%=Model.HiddenConditional%>" })%>

Maybe I'm thinking too simply, but couldn't you set a property in the ViewModel to true or false, then in the DropDownListFor, do this: <%= Html.DropDownListFor(r=>r.Id, Model.MyList, new { @class = "Dropdown " + (Model.MyListIsHidden ? " hidden" : "") })%> — John Washam
– John Washam, Commented Mar 7, 2015 at 17:27

hutchonoid · Accepted Answer · 2015-03-07 17:30:29Z

1

You need to do this:

<%= Html.DropDownListFor(r=>r.Id, Model.MyList, 
               new { @class = "Dropdown " + Model.HiddenConditional })%>

edited Mar 7, 2015 at 17:30

answered Mar 7, 2015 at 17:25

hutchonoid

33.4k15 gold badges102 silver badges106 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

hutchonoid Over a year ago

@leora Sorry I had just missed off the conditional, try the above.

John Washam · Accepted Answer · 2015-03-07 19:04:38Z

1

You may be tied to your solution of using HiddenConditional in your ViewModel, but I think it would be better to keep the class name in your View and simply use a boolean in your ViewModel. So it would look like this:

ViewModel

public bool MyListIsHidden { get; set; }

View

<%= Html.DropDownListFor(r=>r.Id, Model.MyList, new { @class = "Dropdown" + (Model.MyListIsHidden ? " hidden" : "") })%>

edited Mar 7, 2015 at 19:04

answered Mar 7, 2015 at 17:51

John Washam

4,1134 gold badges35 silver badges46 bronze badges

Collectives™ on Stack Overflow

In asp.net-mvc, How can I insert a class name from my view model for a html.dropdownlistfor

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related