Input type checkbox with MVC razor - asp.net-mvc

Question

Why is the value of my checkbox not passed to my ViewModel?
My View (I omitted input tags not relevant for this post):
#model Pro.WebUI.ViewModels.UserViewModel
#using (Html.BeginForm("ManageUsers", "Administration", FormMethod.Post,
new { id = "request-form", #class = "form-horizontal" }))
{
<div class="form-group">
<label for="inputAuthorize" class="col-lg-2 control-label">Authorize</label>
<div class="col-lg-8">
<input type="checkbox" id="Authorized" name="Authorized" value="#Model.Authorized" />
</div>
</div>
<div class="form-group">
<div class="col-lg-10 col-lg-offset-2">
<br /><br />
<button type="submit" class="btn btn-primary">Submit Request</button>
</div>
</div>
}
My ViewModel:
public class UserViewModel
{
[Key]
public string UserID { get; private set; }
public string UserName { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public bool Authorized { get; set; }
public string Email { get; set; }
public string Phone { get; set; }
public string Notes { get; set; }
}
My Controller:
[HttpPost]
public ActionResult ManageUsers(UserViewModel model)
{
if (ModelState.IsValid)
{
ProcurementUser obj = new ProcurementUser();
obj.UserName = model.Email;
obj.FirstName = model.FirstName;
obj.LastName = model.LastName;
obj.Email = model.Email;
obj.Phone = model.Phone;
obj.Authorized = model.Authorized;
UserRepository.SaveUser(obj);
//success message
}
return View(model);
}
I did not include all input tags but when I step through the code without the checkbox, all values are passed. I looked at other checkbox questions on SOF but they mostly use the #Html.Checkbox or #Html.CheckboxFor. I would like to just use input type="checkbox"

Answer 1

If we need to use <input> filed instead of #Html.CheckboxFor, we can use "checked=\"checked\"" syntax as in this code:
<input type="checkbox" id="Authorized" name="Authorized" value="true" #(Model.Authorized ? "checked=\"checked\"" : "") />

Answer 2

As has been hinted at in the comments the issue you're having is that you're not really creating your checkbox correctly:
Assuming your model has Authorized = true your mark-up would be:
<input type="checkbox" id="Authorized" name="Authorized" value="true" />
Similarly the false state would result in:
<input type="checkbox" id="Authorized" name="Authorized" value="false" />
But these aren't "checked" checkboxes - they're still "unchecked", and need the checked attribute setting:
<input type="checkbox" id="Authorized" name="Authorized" value="true" checked />
As Stephen points out - an unchecked checkbox will not send any data back to the server so that you don't get confused about which options where selected.
Finally, as has also been noted, your <label> element is for an non-existent field looking for inputAuthorize instead of Authorized.
All of these issues would be taken care of for you if you were to use the #Html.CheckboxFor and #Html.LabelFor helper classes.