如何根据操作方法的名称更改标题表单？

Question

我有一个表单和两个操作方法，我的操作方法使用相同的表单进行编辑和添加 我想基于Action方法的名称更改表单标题。例如，当我点击一个电影的添加按钮时，表单的标题名称必须是“新电影”。 当我点击一个电影的编辑按钮时，表单的标题名称必须是“编辑电影”。

 public ActionResult New() 
    { 
     var geners=_context.Genres.ToList(); 
     var viewModel=new MovieFormViewModel 
     { 
      Genres=geners 
     }; 
     //_context.Movies.Add(movie); 
     return View("New", viewModel); 
    } 
    public ActionResult Edit(int id) 
    { 
     var movie=_context.Movies.SingleOrDefault(m => m.Id==id); 
     if (movie == null) 
      return HttpNotFound(); 
     var viewModel=new MovieFormViewModel 
     { 
      Movie=movie, 
      Genres=_context.Genres.ToList() 
     }; 

     return View("New",viewModel); 
    } 

[HttpPost] 
    public ActionResult Save(Movie movie) 
    { 
     movie.DateAdded = DateTime.Now; 
     _context.Movies.Add(movie); 
     _context.SaveChanges(); 
     return RedirectToAction("index", "Movies"); 
    } 

=========================================== =======

@model Vidly.ViewModels.MovieFormViewModel 
@{ 
    ViewBag.Title = "New"; 
} 
<h2>New Movie</h2> 
@using (@Html.BeginForm("Save", "Movies")) 
{ 
    <div class="form-group"> 
     @Html.LabelFor(m =>m.Movie.Name) 
     @Html.TextBoxFor(m => m.Movie.Name, new { @class = "form-control" }) 

    </div> 
    <div class="form-group"> 
     @Html.LabelFor(m => m.Movie.ReleaseDate) 
     @Html.TextBoxFor(m => m.Movie.ReleaseDate, new { @class = "form-control" }) 
    </div> 

    <div class="form-group"> 
     @Html.LabelFor(m => m.Movie.Genre) 
     @Html.DropDownListFor(m => m.Movie.GenreId, new SelectList(Model.Genres, "Id", "Name"), "Select Genres", new { @class = "form-control" }) 
    </div> 
    <div class="form-group"> 
     @Html.LabelFor(m => m.Movie.NumberInStock) 
     @Html.TextBoxFor(m => m.Movie.NumberInStock, new { @class = "form-control" }) 
    </div> 
    <button type="submit" class="btn btn-primary">Save</button> 
} 

Answer 1

我的问题已修复。

public class MovieFormViewModel 
{ 
    public IEnumerable<Genre> Genres { get; set; } 
    public Movie Movie { get; set; } 
    public string Title 
    { 
     get 
     { 
      if (Movie != null && Movie.Id != 0) 
       return "Edit Movie"; 
      return "New Movie"; 
     } 
    } 
} 

}