MVC4 DataType.Date EditorFor won't display dat

2019-01-01 07:58发布

I'm using the DataType.Date attribute on my model and an EditorFor in my view. This is working fine in Internet Explorer 8 and Internet Explorer 9, but in Google Chrome it is showing a date picker and instead of displaying the value it just displays "Month/Day/Year" in faded gray text.

Why won't Google Chrome display the value?

Model:

[DataType(DataType.Date)]
public Nullable<System.DateTime> EstPurchaseDate { get; set; }

View:

<td class="fieldLabel">Est. Pur. Date</td>
<td class="field">@Html.EditorFor(m=>m.EstPurchaseDate)</td>

Chrome

Internet Explorer

8条回答
长期被迫恋爱
2楼-- · 2019-01-01 08:25

In MVC 3 I had to add:

using System.ComponentModel.DataAnnotations;

among usings when adding properties:

[DataType(DataType.Date)]
[DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}", ApplyFormatInEditMode = true)]

Especially if you are adding these properties in .edmx file like me. I found that by default .edmx files don't have this using so adding only propeties is not enough.

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人气声优
3楼-- · 2019-01-01 08:26

When you decorate a model property with [DataType(DataType.Date)] the default template in ASP.NET MVC 4 generates an input field of type="date":

<input class="text-box single-line" 
       data-val="true" 
       data-val-date="The field EstPurchaseDate must be a date."
       id="EstPurchaseDate" 
       name="EstPurchaseDate" 
       type="date" value="9/28/2012" />

Browsers that support HTML5 such Google Chrome render this input field with a date picker.

In order to correctly display the date, the value must be formatted as 2012-09-28. Quote from the specification:

value: A valid full-date as defined in [RFC 3339], with the additional qualification that the year component is four or more digits representing a number greater than 0.

You could enforce this format using the DisplayFormat attribute:

[DataType(DataType.Date)]
[DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}", ApplyFormatInEditMode = true)]
public Nullable<System.DateTime> EstPurchaseDate { get; set; }
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妖精总统
4楼-- · 2019-01-01 08:27

If you remove [DataType(DataType.Date)] from your model, the input field in Chrome is rendered as type="datetime" and won't show the datepicker either.

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一个人的天荒地老
5楼-- · 2019-01-01 08:27

Reply to MVC4 DataType.Date EditorFor won't display date value in Chrome, fine in IE

In the Model you need to have following type of declaration:

[DataType(DataType.Date)]
public DateTime? DateXYZ { get; set; }

OR

[DataType(DataType.Date)]
public Nullable<System.DateTime> DateXYZ { get; set; }

You don't need to use following attribute:

[DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}", ApplyFormatInEditMode = true)]

At the Date.cshtml use this template:

@model Nullable<DateTime>
@using System.Globalization;

@{
    DateTime dt = DateTime.Now;
    if (Model != null)
    {
        dt = (System.DateTime)Model;

    }

    if (Request.Browser.Type.ToUpper().Contains("IE") || Request.Browser.Type.Contains("InternetExplorer"))
    {
        @Html.TextBox("", String.Format("{0:d}", dt.ToShortDateString()), new { @class = "datefield", type = "date" })
    }
    else
    {
        //Tested in chrome
        DateTimeFormatInfo dtfi = CultureInfo.CreateSpecificCulture("en-US").DateTimeFormat;
        dtfi.DateSeparator = "-";
        dtfi.ShortDatePattern = @"yyyy/MM/dd"; 
        @Html.TextBox("", String.Format("{0:d}", dt.ToString("d", dtfi)), new { @class = "datefield", type = "date" })
    } 
}

Have fun! Regards, Blerton

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墨雨无痕
6楼-- · 2019-01-01 08:32

In MVC5.2, add Date.cshtml to folder ~/Views/Shared/EditorTemplates:

@model DateTime?
@{
    IDictionary<string, object> htmlAttributes;
    object objAttributes;
    if (ViewData.TryGetValue("htmlAttributes", out objAttributes))
    {
        htmlAttributes = objAttributes as IDictionary<string, object> ?? HtmlHelper.AnonymousObjectToHtmlAttributes(objAttributes);
    }
    else
    {
        htmlAttributes = new RouteValueDictionary();
    }
    htmlAttributes.Add("type", "date");
    String format = (Request.UserAgent != null && Request.UserAgent.Contains("Chrome")) ? "{0:yyyy-MM-dd}" : "{0:d}";
    @Html.TextBox("", Model, format, htmlAttributes)
}
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浪荡孟婆
7楼-- · 2019-01-01 08:34

I still had an issue with it passing the format yyyy-MM-dd, but I got around it by changing the Date.cshtml:

@model DateTime?

@{
    string date = string.Empty;
    if (Model != null)
    {
        date = string.Format("{0}-{1}-{2}", Model.Value.Year, Model.Value.Month, Model.Value.Day);
    }

    @Html.TextBox(string.Empty, date, new { @class = "datefield", type = "date"  })
}
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