The specified value does not conform to the required format yyyy-MM-dd
The specifications for the HTML5 date picker state that the date must be in the format yyyy-MM-dd (ISO format). This means that you DisplayFormatAttribute must be
[DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}", ApplyFormatInEditMode = true)]public string MyDate { get; set; }Alternatively you can manually add the format using
@Html.TextBoxFor(m => m.MyDate, "{0:yyyy-MM-dd}", new { @type = "date" })The later option allows you to keep the DataFormatString = "{0:dd/MM/yyyy}") for usage in @Html.DisplayFor()
The issue could be from the type="date". That was my situation anyway. Worked once it was changed to type="text". If the interface is built with an MVC wrapper, you need to replace or set the html attribute accordingly.
You can use the InputTagHelper.Format
<input asp-for="MyDate" asp-format="{0:yyyy-MM-dd}" />