This is a migrated thread and some comments may be shown as answers.

No parameterless constructor defined for this object

4 Answers 222 Views

ComboBox

This is a migrated thread and some comments may be shown as answers.

This question is locked. New answers and comments are not allowed.

Dave Hayward asked on 25 Jan 2012, 07:47 PM

I'm using ASP.NET MVC 3 technology and Telerik combobox in my project.

Here is how I'm populating the data:

mod.LangPref = new SelectList(new[]{

new SelectListItem{ Text="English", Value="1"},

new SelectListItem{ Text="French", Value="2"},

new SelectListItem{ Text="German", Value="3"}

}, "Value", "Text", "2");

and populate the control in the view as follows:

@( Html.Telerik().DropDownList()

.Name("langpref")

.BindTo(new SelectList(mod.LangPref, "Value", "Text"))

.HtmlAttributes(new { style = "width:150px; text-align: left" })

)

But when I attempt to update model using the

TryUpdateModel(mod) function

I'm getting error message:

"No parameterless constructor defined for this object."

Could you tell me what's wrong?

Thanks.

4 Answers, 1 is accepted

answered on 08 Feb 2012, 04:10 PM

I am getting the same error message with the menu control. I have tried previous versions of the control, but I am still getting the error.

The only way I can make the application run is to remove the Action(string ActionName, string ControllerName ) functions, Which defeats the purpose of having a menu.


<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl" %>
 
    <% Html.Telerik().Menu()
           .Name("NotificationMenu")
           .Items(menu => {
               menu.Add()
                   .Text("Notification")
                   .Items(item => {
                       item.Add()
                           .Action( "Index", "Subscriber")
                           .Text("My Subscribers");
                       item.Add()
                           .Action("Create", "Subscriber")
                           .Text("Add Subscriber");
                   });
           }).Render(); %>