我有一个枚举：
public enum Action {
Remove=1,
Add=2
}
还有一个类：
[DataContract]
public class Container {
[DataMember]
public Action Action {get; set;}
}
{Action:1}（如果 Action 是 Remove）。{Action:Remove}（代替 int，我需要枚举类型的 ToString 表示形式）。您只需要添加属性：
[Newtonsoft.Json.JsonConverter(typeof(StringEnumConverter))]
对于无法序列化为字符串的枚举属性，可以使用以下属性将其序列化。
或者，如果您有更奇特的格式要求，您可以使用以下属性告诉JSON序列化器仅序列化您希望格式化的属性。这在某种程度上取决于其余实现。它也会识别属性上的DataMember属性。
[JsonObject(MemberSerialization = MemberSerialization.OptOut)]
public class Container
{
public Action Action { get; set; }
[JsonProperty(PropertyName = "Action")]
public string ActionString
{
get
{
return Action.ToString();
}
}
}
[Newtonsoft.Json.JsonConverter(typeof(Newtonsoft.Json.Converters.StringEnumConverter))] - Thomas Schreiter使用Json.Net，您可以定义一个自定义的StringEnumConverter，方法如下：
public class MyStringEnumConverter : Newtonsoft.Json.Converters.StringEnumConverter
{
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
if (value is Action)
{
writer.WriteValue(Enum.GetName(typeof(Action),(Action)value));// or something else
return;
}
base.WriteJson(writer, value, serializer);
}
}
并将其序列化为
string json=JsonConvert.SerializeObject(container,new MyStringEnumConverter());
L.B +1 - Nopeif (value.GetType().IsEnum) { writer.WriteValue(Enum.GetName(value.GetType(), value)); return; } - Gman这是一个简单的方法：
JsonConvert.SerializeObject(myObject, Formatting.Indented, new StringEnumConverter());
public enum Color {red, green, blue, yellow,pink}，则序列化yellow会产生数字3而不是字符串"yellow"。EnumMemberAttribute的值进行序列化。最大的优点是：
string而不是int[DataContract]
public class SerializableClass {
public Shapes Shape {get; set;} //Do not use the DataMemberAttribute in the public property
[DataMember(Name = "shape")]
private string ShapeSerialization // Notice the PRIVATE here!
{
get { return EnumHelper.Serialize(this.Shape); }
set { this.Shape = EnumHelper.Deserialize<Shapes>(value); }
}
}
/* Available at: https://gist.github.com/mniak/a4d09264ad1ca40c489178325b98935b */
public static class EnumHelper
{
public static string Serialize<TEnum>(TEnum value)
{
var fallback = Enum.GetName(typeof(TEnum), value);
var member = typeof(TEnum).GetMember(value.ToString()).FirstOrDefault();
if (member == null)
return fallback;
var enumMemberAttributes = member.GetCustomAttributes(typeof(EnumMemberAttribute), false).Cast<EnumMemberAttribute>().FirstOrDefault();
if (enumMemberAttributes == null)
return fallback;
return enumMemberAttributes.Value;
}
public static TEnum Deserialize<TEnum>(string value) where TEnum : struct
{
TEnum parsed;
if (Enum.TryParse<TEnum>(value, out parsed))
return parsed;
var found = typeof(TEnum).GetMembers()
.Select(x => new
{
Member = x,
Attribute = x.GetCustomAttributes(typeof(EnumMemberAttribute), false).OfType<EnumMemberAttribute>().FirstOrDefault()
})
.FirstOrDefault(x => x.Attribute?.Value == value);
if (found != null)
return (TEnum)Enum.Parse(typeof(TEnum), found.Member.Name);
return default(TEnum);
}
}
尝试使用
public enum Action {
[EnumMember(Value = "Remove")]
Remove=1,
[EnumMember(Value = "Add")]
Add=2
}
我不确定这是否适合您的情况，所以我可能是错的。
public class Container
{
public string Action { get; set; }
}
枚举定义
public enum Action {
Remove=1,
Add=2
}
视图中的代码
@Html.DropDownListFor(model => model.Action, typeof (Action))
扩展方法
/// <summary>
/// Returns an HTML select element for each property in the object that is represented by the specified expression using the given enumeration list items.
/// </summary>
/// <typeparam name="TModel">The type of the model.</typeparam>
/// <typeparam name="TProperty">The type of the value.</typeparam>
/// <param name="htmlHelper">The HTML helper instance that this method extends.</param>
/// <param name="expression">An expression that identifies the object that contains the properties to display.</param>
/// <param name="enumType">The type of the enum that fills the drop box list.</param>
/// <returns>An HTML select element for each property in the object that is represented by the expression.</returns>
public static MvcHtmlString DropDownListFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper,
Expression<Func<TModel, TProperty>> expression, Type enumType)
{
var values = from Enum e in Enum.GetValues(enumType)
select new { Id = e, Name = e.ToString() };
return htmlHelper.DropDownListFor(expression, new SelectList(values, "Id", "Name"));
}
[DataContract]
public enum ControlSelectionType
{
[EnumMember(Value = "Not Applicable")]
NotApplicable = 1,
[EnumMember(Value = "Single Select Radio Buttons")]
SingleSelectRadioButtons = 2,
[EnumMember(Value = "Completely Different Display Text")]
SingleSelectDropDownList = 3,
}
public static string GetDescriptionFromEnumValue(Enum value)
{
EnumMemberAttribute attribute = value.GetType()
.GetField(value.ToString())
.GetCustomAttributes(typeof(EnumMemberAttribute), false)
.SingleOrDefault() as EnumMemberAttribute;
return attribute == null ? value.ToString() : attribute.Value;}
我已经使用Newtonsoft.Json库提供了一个解决方案。它修复了枚举问题，使错误处理更好，并且适用于IIS托管服务而不是自托管服务。它不需要对您的DataContract类进行任何更改或添加任何特殊内容。这是相当多的代码，所以您可以在GitHub上找到它：https://github.com/jongrant/wcfjsonserializer/blob/master/NewtonsoftJsonFormatter.cs
您必须向您的Web.config添加一些条目才能使其正常工作，您可以在此处查看示例文件：
https://github.com/jongrant/wcfjsonserializer/blob/master/Web.config