How to display fields from object at View?

See more:

C#

ASP.NET

C#4.0

entity-framework

At ViewBag.users have only one object:

@foreach (var c in ViewBag.users)
{

    var Username = @c.Username;
    var Nome = @c.Nome;


}

And below there is:
@Html.TextBoxFor(model => model.Username, new { @Value = @Username, maxlength = 50 })

It gets me error:

Error 1 The name 'Username' does not exist in the current context