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TreeView BindTo Get Cannot use lamda expression error

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TreeView

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Aleksander asked on 02 Jul 2012, 09:26 PM

So I have the following for my Tree

@{ Html.Telerik().TreeView().Name("tvContacts")

.BindTo(ViewBag.Contacts, mappings =>

{

mappings.For<ContactSite>(binding => binding

.ItemDataBound((item, site) =>

{

item.Text = site.SiteName;

})

.Children(site => site.ContactGroups));

mappings.For<ContactGroup>(binding => binding

.ItemDataBound((item, group) =>

{

item.Text = group.GroupName;

})

.Children(group => group.ContactPeople));

mappings.For<ContactPerson>(binding => binding

.itemDataBound((item, person) =>

{

item.Text = person.FirstName + " " + person.LastName;

}));

});

}

Then I have the following for my objects

using System;

using System.Collections.Generic;

using System.Linq;

namespace OnCallTracker.Business

{

public class ContactPage

{

public IEnumerable<ContactSite> ContactSites { get; set; }

}

public class ContactSites : List<ContactSite>

{

}

public class ContactSite

{

public int SiteId { get; set; }

public string SiteName { get; set; }

public IEnumerable<ContactGroup> ContactGroups { get; set; }

}

public class ContactGroups : List<ContactGroup>

{

}

public class ContactGroup

{

public int GroupId { get; set; }

public string GroupName { get; set; }

public string GroupDescription { get; set; }

public ContactPerson Manager { get; set; }

public IEnumerable<ContactPerson> ContactPeople { get; set; }

}

public class ContactPeople : List<ContactPerson>

{

}

public class ContactPerson

{

public int PersonProfileId { get; set; }

public Int64 PersonnelId { get; set; }

public string FirstName { get; set; }

public string LastName { get; set; }

public string PersonnelName { get; set; }

public string CellNumber { get; set; }

public string DeskNumber { get; set; }

public string GetContactPersonName()

{

return FirstName + " " + LastName;

}

Can you please tell me what I'm missing? I get the following error.

Server Error in '/' Application.

Compilation Error

Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: CS1977: Cannot use a lambda expression as an argument to a dynamically dispatched operation without first casting it to a delegate or expression tree type

Source Error:


            Line 4:  
Line 5:  @{ Html.Telerik().TreeView().Name("tvContacts")
Line 6:         .BindTo(ViewBag.Contacts, mappings =>
Line 7:         {
Line 8:             mappings.For<ContactSite>(binding => binding

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TreeView BindTo Get Cannot use lamda expression error

Server Error in '/' Application.

Compilation Error

3 Answers, 1 is accepted