title: saving datetime with format yyyy/MM/dd HH:mm:ss cause validation error in asp.net mvc
body: <p>i have a model like this :</p>
  
  <pre><code>[DataType(DataType.Date)]
  [DisplayFormat(DataFormatString = "{0:yyyy/MM/dd HH:mm:ss}", ApplyFormatInEditMode = true)]
  public DateTime DateUpdate { get; set; }
  </code></pre>
  
  <p>and have a view :</p>
  
  <pre><code>&lt;div class="form-group"&gt;
          @Html.LabelFor(model =&gt; model.DateUpdate, htmlAttributes: new { @class = "control-label col-md-2" })
          &lt;div class="col-md-10"&gt;
              @Helpers.EditVal(Html.EditorFor(m =&gt; m.DateUpdate, new { htmlAttributes = new { @class = "form-control", @Value = DateTime.UtcNow.ToString("yyyy/MM/dd HH:mm:ss") } }))
              @Html.ValidationMessageFor(model =&gt; model.DateUpdate, "", new { @class = "text-danger" })
          &lt;/div&gt;
      &lt;/div&gt;
  </code></pre>
  
  <p>but i can't save it because i get validation error for dateupdate field ! what is wrong here ? i want to save this format <code>{0:yyyy/MM/dd HH:mm:ss}</code> not mm/dd/yy or something else and i don't want to get validation error</p>