Can't get BindAttribute to work

Question

Hello

I'm having problems with binding values from a view to an object. Somehow the object gets all values set to null then.

In my viewmodel I have:

public class UserAdminEditViewModel
{
    public User User { get; set; }
    public IEnumerable<Usergroup> Usergroups { get; set; }
    public IEnumerable<User> Users { get; set; }

    public UserAdminEditViewModel() {}
}

In my controller I have:

[AcceptVerbs(HttpVerbs.Post)]       
public ActionResult UserEdit(
    [BindAttribute(
        Include="UserID,UserName,Email,Password,Firstname,Surname")]
    UserAdminEditViewModel User, 
    int[] UsergroupID)
{        
    if (ModelState.IsValid)
    {
        try
        {
            for(int i = 0; i < UsergroupID.Length; i++)
            {                         
                User.User.Usergroups.Add(
                    _ug.GetUsergroups(UsergroupID[i]).First());    
            }

            _us.SaveUser(User.User);

And in my edit-view I have:

<%= Html.TextBox("User.Username", Model.User.Username) %>
<%= Html.TextBox("User.Firstname", Model.User.Firstname) %>

etc etc..

I have tried with:

<%= Html.TextBox(
        "User.Username", Model.User.Username, new { id = "User.Username" } ) %>

etc, but that doesn't work either... Only works when I remove BindAttribute...

How can I fix this, I can't pass all the models columns...

Thanks in advance /M

Answer 1

To use an attribute, you must specify its name without the "Attribute" part of the class name, like:

public ActionResult UserEdit([Bind(Include="UserID,UserName,Email,Password,Firstname,Surname")]UserAdminEditViewModel User, int[] UsergroupID)
{

For instance, AcceptVerbs is also an attribute, and the related class is called AcceptVerbsAttribute...

One more detail: the Controller class contains a property called User, which represents the authenticated user who initiated the call to the action method. If you create a parameter named User, you will simply hide the "default" User property. You might want to change the name of your parameter!

Otherwise, you can still access the controller's User property through

base::User

Answer 2

Have you tried adding the prefix to the Bind attribute, either as the Prefix property or as part of the Includes, e.g:

public ActionResult UserEdit([Bind(Include="User.UserID,User.UserName,User.Email,User.Password,User.Firstname,User.Surname")]User User, int[] UsergroupID)

Answer 3

Passed in the wrong class to the postback action