[英]Is there any alternates Attribute for asp.net core enum model binding instead of EnumMemberAttribute?
There's a enum type:有一个枚举类型:
public enum Cat {
[EnumMember(Value = "white_cat")]
WhiteCat,
[EnumMember(Value = "black_cat")]
BlackCat
}
but use as follow asp.net core 2.2 model binding, it will binding failure:但是按照asp.net core 2.2模型绑定使用,会绑定失败:
public class A {
public Cat TheCat { get; set; }
}
public class XXXController : ControllerBase {
public ActionResult XXX([FromForm] Cat cat) {
// ...
}
}
Reference: https://stackoverflow.com/a/58338955/3907561参考: https : //stackoverflow.com/a/58338955/3907561
public class EnumMemberConverter<T> : EnumConverter {
public EnumMemberConverter(Type type) : base(type) { }
public override object ConvertFrom(ITypeDescriptorContext context,
CultureInfo culture,
object value) {
var type = typeof(T);
foreach (var field in type.GetFields()) {
if (Attribute.GetCustomAttribute(field, typeof(EnumMemberAttribute)) is EnumMemberAttribute attribute &&
value is string enumValue &&
attribute.Value == enumValue) {
return field.GetValue(null);
}
}
return base.ConvertFrom(context, culture, value);
}
}
usage:用法:
[TypeConverter(typeof(EnumMemberConverter<Cat>))]
public enum Cat {
[EnumMember(Value = "white_cat")]
WhiteCat,
[EnumMember(Value = "black_cat")]
BlackCat
}
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