Asp.net MVC Chosen DrownList Validation issue Resolved

1. Property should be nullable in model.

2. script code should be in separate js file

3. Add Following code at top of js file

$.validator.setDefaults({ ignore: ":hidden:not(select)" });
$.validator.unobtrusive.parse($("#form_ConflictOfInterest"));

[Required(ErrorMessage = "This field is required")]
public int? EmpID { get; set; }

@Html.DropDownListFor(model => model.EmpId, Model.EmpList, "Select", new { @id = "ddlEmpid", @class = "ddlEmpid", data_placeholder = "Select", @style = "width:100%;" })
@Html.ValidationMessageFor(k=>k.EmpId)