Html.DropDownList disable if it is Empty

Question

I am new to MVC and working on an MVC4 Application.

What I wan to do is I want to disable my Dropdown if it is empty.

View->

@Html.DropDownList("UserName", null, string.Empty)

Controller->

ViewBag.UserName = new SelectList(lstUserName, "username", "username");

UserName is my viewbag which contains the list of items to fill dropdown.

Now if lstUserName is empty,I want to disable the DropDown..How can I achieve that..

Thousand · Accepted Answer · 2013-07-20 11:16:44Z

1

@if (@ViewBag.UserName.Items.Count == 0)
{
@Html.DropDownList("UserName", null, string.Empty, new { @disabled=true})
}
else
{
 @Html.DropDownList("UserName", null, string.Empty)
}

You could use @readonly aswell, instead of @disabled.

edited Jul 20, 2013 at 11:16

answered Jul 20, 2013 at 11:00

Thousand

6,6484 gold badges42 silver badges46 bronze badges

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

9 Comments

Simon Belanger Over a year ago

Your first version wouldn't work. As far as I know, disabled is based on the presence of the attribute, not the value contained within.

Simon Belanger Over a year ago

@Farzi Try for List of one item.

Thousand Over a year ago

@SimonBelanger I tested this out on my own machine and it works for me. I am using MVC4 tho, maybe it doesn't work in older versions.

Simon Belanger Over a year ago

@Thousand It will work for list with 0 items. Disabled="false" is still disabling a field. Check the W3C specification or better yet, if you have chrome, right click the comment box click inspect element and add an attribute with disabled='false'. It will be disabled. If your browser is enabling the box, it's not a standard behavior and should be avoided. Nothing to do with MVC, this is an HTML specification.

Thousand Over a year ago

@SimonBelanger ah indeed, i just tested it and it doesn't work. The second option still does though.

|

Collectives™ on Stack Overflow

Html.DropDownList disable if it is Empty

1 Answer 1

9 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

9 Comments

Your Answer

Sign up or log in

Post as a guest

Related