cannot implicitly convert type void to object. .NET MVC PartialViewResult

Question

I have the following controller action:

[ChildActionOnly]
public virtual PartialViewResult ListActions(int id)
{
    var actions = meetingActionRepository.GetAllMeetingActions(id);

    return PartialView(actions);
}

And the following action link (using t4MVC and the razor syntax)

<p>
   @Html.RenderAction(MVC.MeetingActions.ListActions(Model.MeetingId))
</p>

However this gives me the error:

cannot implicitly convert type void to object

As far as i can tell the controller action is ok, so what could be giving me this error?

score 137 · Accepted Answer · edited Jun 17 '11 at 12:28

137

Like this:

<p>
    @Html.Action(MVC.MeetingActions.ListActions(Model.MeetingId))
</p>

or if you insist on RenderAction like this:

<p>
    @{Html.RenderAction(MVC.MeetingActions.ListActions(Model.MeetingId));}
</p>

Personally I prefer the first, makes fewer keystrokes.

edited Jun 17 '11 at 12:28

Ryan Lundy

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answered Feb 07 '11 at 22:50

Darin Dimitrov

1,023,142
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2,928

1

Thank you. Funky syntax there. I assume that's the razor way of doing <%html instead of <%=Html ? What's the difference between Action and Renderaction anyway. Phil Haack says RenderAction is more efficient? – MrBliz Feb 07 '11 at 23:08
2

@Doozer1979, yeah, exactly, that's the Razor way. – Darin Dimitrov Feb 07 '11 at 23:09
1

This also works : {Html.RenderAction(MVC.MeetingActions.ListActions(Model.MeetingId));}, so using @ is not necessary. – FrenkyB Jul 01 '16 at 08:19

Ewald · Answer 2 · 2017-01-19T07:04:43.300

48

I had the same issue. What worked for me is to encapsulate the expression it in curly brackets.

@{Html.RenderPartial("viewName", Model);}

edited Jan 19 '17 at 07:04

answered Dec 08 '16 at 14:13

Ewald

698
7
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This worked for me, however I have no idea why adding curling brackets would work. Can you elaborate on that? – Brad Thiessen Jun 12 '18 at 01:26
2

@BradThiessen It works because ASP.NET MVC is quite frankly a shoddy framework full of glaring holes and poor design decisions. I just came across this too. Who knows why, but my patience is wearing thin with MVC. – user9993 Jun 14 '18 at 14:40
11

@BradThiessen `RenderPartial()` is a void, using `@` you say the Razor to print it which is not possible as it doesn't produce any output content! – S.Serpooshan Sep 26 '18 at 14:44

score 45 · Answer 3 · answered Nov 20 '13 at 18:03

45

Html.Partial should work as well :)

@Html.Partial("View", Model);

answered Nov 20 '13 at 18:03

VladL

12,769
10
63
83

score 6 · Answer 4 · edited May 23 '17 at 11:54

6

Difference between Html.RenderAction and Html.Action

Different things for different purposes. Check out the above link.

edited May 23 '17 at 11:54

Community

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answered Mar 04 '12 at 07:10

Ahmed

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cannot implicitly convert type void to object. .NET MVC PartialViewResult

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