MVC pass int from view to controller with a button click

Question

Here is my view:

@foreach (var item in Model)
{
    if(i == 0)
    {
        @:<div class="row">
    }
    <div class="col-md-3 col-xs-12" style="margin-top:20px;">
        @Html.ActionLink(item.Name, "ClientDetail", "Client", null, new { @class = "btn btn-primary btn-block", id = @item.id})

    </div>
    i++;
    if(i%4 == 0)
    {
        @:</div>
        i = 0;
    }
}

and here is the controller:

public ActionResult ClientDetail(int id)
{        
    ClientModel model = cserv.Get(id, User.Identity.GetUserId());
    ClientViewModel viewModel = new ClientViewModel(model);
    return View(viewModel);    
}

Every time I click on one of my links it gives me this error:

The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult ClientDetail(Int32)' in 'TechUCRM.Controllers.ClientController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter.
Parameter name: parameters

Why is my id parameter not being passed into the controller?

Thank you!

Win · Accepted Answer · 2016-06-14 13:02:12Z

2

You want to place id at routeValues argument.

@Html.ActionLink(item.Name, "ClientDetail", "Client", 
   new { id = item.id}, 
   new { @class = "btn btn-primary btn-block"})

Same as

@Html.ActionLink(item.Name, "ClientDetail", "Client", 
    routeValues: new { id = item.id }, 
    htmlAttributes: new { @class = "btn btn-primary btn-block" })

answered Jun 14, 2016 at 13:02

Win

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1 Comment

Sam Redmond Over a year ago

Worked like a charm. Thank you!

MRebati · Accepted Answer · 2016-06-14 13:02:49Z

1

change this line:

@Html.ActionLink(item.Name, "ClientDetail", "Client", null, new { @class = "btn btn-primary btn-block", id = @item.id})

to:

@Html.ActionLink(item.Name, "ClientDetail", "Client", new{ id= item.Id }, new { @class = "btn btn-primary btn-block"})

one you used up there sets id attribute of HTML. it is not the Id for Routing.

answered Jun 14, 2016 at 13:02

MRebati

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