I have an enum like this:
public enum PaymentType
{
Self=1,
Insurer=2,
PrivateCompany=3
}
And I am showing it as select box options like this inside Controller:
List<Patient.PaymentType> paymentTypeList =
Enum.GetValues(typeof (Patient.PaymentType)).Cast<Patient.PaymentType>().ToList();
ViewBag.PaymentType = new SelectList(paymentTypeList);
Here I can see that only the string part (example "Self") of the enum is going to the front end, so I won't get the value (example "1") of enum in my dropdown. How can I pass text as well as value of enum to select list?
You can write an extension method like this:
public static System.Web.Mvc.SelectList ToSelectList<TEnum>(this TEnum obj)
where TEnum : struct, IComparable, IFormattable, IConvertible // correct one
{
return new SelectList(Enum.GetValues(typeof(TEnum)).OfType<Enum>()
.Select(x =>
new SelectListItem
{
Text = Enum.GetName(typeof(TEnum), x),
Value = (Convert.ToInt32(x)).ToString()
}), "Value", "Text");
}
and in action use it like this:
public ActionResult Test()
{
ViewBag.EnumList = PaymentType.Self.ToSelectList();
return View();
}
and in View :
@Html.DropDownListFor(m=>m.SomeProperty,ViewBag.EnumList as SelectList)
<select id="EnumDropDown" name="EnumDropDown">
<option value="1">Self</option>
<option value="2">Insurer</option>
<option value="3">PrivateCompany</option>
</select>
Here is a working Demo Fiddle of Enum binding with DropDownListFor
public enum PaymentType
{
Self=1,
Insurer=2,
PrivateCompany=3
}
Get Self value:
int enumNumber = (int)PaymentType.Self; //enumNumber = 1
Exemple:
getEnum(PaymentType.Self);
private void getEnum(PaymentType t)
{
string enumName = t.ToString();
int enumNumber = (int)t;
MessageBox.Show(enumName + ": " + enumNumber.ToString());
}
MVC5中有一个扩展方法,称为SelectExtensions.EnumDropDownListFor ,它将为您生成下拉列表,并将响应绑定回模型中的enum属性。
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