how to convert java enums in c#

Question

I have searched and found many example but still I need expert help. Below in the code in java:

public class myClass { public static enum myEnum { P("aco", 1000, 4, 8), L("acs", 2100, 1, 9), S("acn", 3500, 1, 6), H("ach", 5400, 1, 6); final public String cc; final int bt; final int Qp; final int lp; private myEnum(String cc, int bt, int Qp, int lp) { this.cc = cc; this.bt = bt; this.Qp = Qp; this.lp = lp; } };}

I have tried to convert it like below by seeing examples:

using System.Reflection; using System; [System.AttributeUsage(System.AttributeTargets.Field, AllowMultiple = false, Inherited = true)] public class EnumAttr : System.Attribute { public EnumAttr() { } } public static class EnumExtension { public static EnumAttr GetAttr(this Enum value) { Type type = value.GetType(); FieldInfo fieldInfo = type.GetField(value.ToString()); var atts = (EnumAttr[])fieldInfo.GetCustomAttributes(typeof(EnumAttr), false); return atts.Length > 0 ? atts[0] : null; } } public class myEnumAttr : EnumAttr { public string Desc { get; set; } } public class myClass { public enum myEnum { [myEnumAttr("aco", 1000, 4, 8)]P, [myEnumAttr("acs", 2100, 1, 9)]L, [myEnumAttr("acn", 3500, 1, 6)]S, [myEnumAttr("ach", 5400, 1, 6)]H, public String cc; int bt; int Qp; int lp; private void myEnum(String cc, int bt, int Qp, int lp) { this.cc = cc; this.bt = bt; this.Qp = Qp; this.lp = lp; } };}

The above code is not correct as per compiler which I know but how to make it working. Please help. Thanks.

Tim S. · Accepted Answer · 2013-09-28 22:02:29Z

This is a working version of your approach:

// use like string desc = myEnum.P.GetAttr().Desc; [System.AttributeUsage(System.AttributeTargets.Field, AllowMultiple = false, Inherited = true)] public class EnumAttr : System.Attribute { public EnumAttr() { } } public static class EnumExtension { public static EnumAttr GetAttr(this Enum value) { Type type = value.GetType(); FieldInfo fieldInfo = type.GetField(value.ToString()); var atts = (EnumAttr[])fieldInfo.GetCustomAttributes(typeof(EnumAttr), false); return atts.Length > 0 ? atts[0] : null; } public static myEnumAttr GetAttr(this myEnum value) { Type type = value.GetType(); FieldInfo fieldInfo = type.GetField(value.ToString()); var atts = (myEnumAttr[])fieldInfo.GetCustomAttributes(typeof(myEnumAttr), false); return atts.Length > 0 ? atts[0] : null; } } public class myEnumAttr : EnumAttr { public string Desc { get; set; } int bt; int Qp; int lp; public myEnumAttr(String desc, int bt, int Qp, int lp) { this.Desc = desc; this.bt = bt; this.Qp = Qp; this.lp = lp; } } public enum myEnum { [myEnumAttr("aco", 1000, 4, 8)]P, [myEnumAttr("acs", 2100, 1, 9)]L, [myEnumAttr("acn", 3500, 1, 6)]S, [myEnumAttr("ach", 5400, 1, 6)]H, }

However, I'm not sure this is the best way to approach this problem. Maybe it'd make more sense to use instances of a class with a private constructor.

// use like string desc = MyEnumLike.P.Desc; public sealed class MyEnumLike { public static readonly MyEnumLike P = new MyEnumLike("aco", 1000, 4, 8); public static readonly MyEnumLike L = new MyEnumLike("acs", 2100, 1, 9); public static readonly MyEnumLike S = new MyEnumLike("acn", 3500, 1, 6); public static readonly MyEnumLike H = new MyEnumLike("ach", 5400, 1, 6); public string Desc { get; set; } int bt; int Qp; int lp; private MyEnumLike(String desc, int bt, int Qp, int lp) { this.Desc = desc; this.bt = bt; this.Qp = Qp; this.lp = lp; } }

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