ASP.NET MVC - using the same form to both create and edit

Question

Whats the best practice approach to creating a form that is used to both create new models and edit existing models?

Are there any tutorials that people can point me in

Answer 1

this is not always the best practice because it depends on the case, here's how i did it

1/ i combined the controller actions for create and edit

public PartialViewResult Creedit(string id = null)
{
    if (id == null)
    {
        // Create new record (this is the view in Create mode)
        return PartialView();
    }
    else
    {
        // Edit record (view in Edit mode)
        Client x = db.ClientSet.Find(id);
        if (x == null) { return PartialView("_error"); }
        // ...
        return PartialView(x);
    }
}

[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Creedit(Client x)
{
    if (x.id == null)
    {
        // insert new record
    }
    else
    {
        // update record
    }
}

2/ i combined the edit and create views into one view i call Creedit

// if you need to display something unique to a create view
// just check if the Model is null
@if(Model==null){
}

so i have 1 view and 2 actions (1 post and 1 get) instead of 2 views and 4 action.