title: DevExtreme Grid DateTime column head filter format
body: <p>Russian(ru-RU) locale is set as default on my PC.</p>
  
  <p>Building .NET Core 3.1 MVC application.</p>
  
  <p>I'm using <code>DevExtreme</code> grid to represent some data.</p>
  
  <p>My class:</p>
  
  <pre><code>     public class DateTest
      {
          public string Name { get; set; }
          public DateTime TestDate { get; set; }
      }
  My action with test data:
  
      public IActionResult Test()
          {
              var model = new List&lt;DateTest&gt;
              {
                  new DateTest{ Name = "wa1", TestDate = new DateTime(2020,1,1) },
                  new DateTest{ Name = "wa2", TestDate = new DateTime(2020,2,2) },
                  new DateTest{ Name = "wa3", TestDate = new DateTime(2020,3,3) },
                  new DateTest{ Name = "wa4", TestDate = new DateTime(2020,4,4) },
                  new DateTest{ Name = "wa5", TestDate = new DateTime(2020,5,5) },
                  new DateTest{ Name = "wa6", TestDate = new DateTime(2020,6,6) },
                  new DateTest{ Name = "wa7", TestDate = new DateTime(2020,7,7) }
              };
              return View("Test", model);
          }
  </code></pre>
  
  <p>And <code>DxDataGrid</code> on my view:</p>
  
  <pre><code>    @(Html.DevExtreme().DataGrid&lt;dxDates.Models.DateTest&gt;()
      .DataSource(Model)
      .RemoteOperations(true)
      .Columns(columns =&gt; {
  
          columns.AddFor(m =&gt; m.Name);
  
          columns.AddFor(m =&gt; m.TestDate);
      })
      .HeaderFilter(c=&gt;c.Visible(true))
  )
  </code></pre>
  
  <p>This is what I get in browser:
  <img src="https://i.stack.imgur.com/4AB8U.png" alt="This is what I get in browser"></p>
  
  <p>I enabled header filter, when I try to filter date column I get timezone included, which makes filter look terrible and uncomfortable to use.</p>
  
  <p>This is how filter looks:
  <img src="https://i.stack.imgur.com/aE6e7.png" alt="This is how filter looks"></p>
  
  <p>As an option it's possible to create property which converts <code>DateTime</code> to string  in correct format and use it instead of real date property.
  But I hope there's a way to make filter date format <code>dd.MM.yyyy</code> without additional properties in data class.</p>