Puzzling ... why do most of my links, in ASP.NET MVC, have Length=4 appended to them?

Question

Why does the following code:

<%= Html.ActionLink("[Click Here For More +]", "Work", "Home", new { @class = "more" }) %>

render as:

<a class="more" href="/Home/Work?Length=4">[Click Here For More +]</a>

Where is that "Length=4" coming from?

Update

If I remove the new { @class = "more" }, I don't get that Length=4 parameter.

Answer 1

Do you have a default value for "length" in one of your routes? If the wrong route is selected, use Html.RouteLink instead of ActionLink.

Answer 2

Looks like a DebuggerVisualizer property! But that should not surface.

Anyways 'Length=4' looks suspiciously like an array (with 4 elements). Use the debugger to look for the culprit.

Answer 3

I look at the overloads for ActionLink and changed the code to look like:

    <%= Html.ActionLink("[Click Here For More +]", "Work", "Home", null, new { @class = "more" }) %>

Added a "null" for the route values. This seems to work. Not sure though what this might affect.

Answer 4

I've had this happen before, and it never hit me. If you look at the overload you're actually using it's probably not the one you want.

Try...

<%= Html.ActionLink("[Click Here For More +]", "Work", "Home", null, new { @class = "more" }) %>

Answer 5

The length=4 issue has popped up for me a couple times. The culprit is usually a bad route, either in the definition or the link I am using.

I've gotten in the habit of always double checking those first.