怎么办时，位掩码（标志）枚举变得太大(What to do when bit mask (flags

我有一个非常大集在我的应用程序的权限，我用一个标志枚举表示。 它正在迅速接近实际的上限长数据类型。 而我不得不想出一个策略，以尽快过渡到一个不同的结构。 现在，我能分解这个列表成小块，不过，这已经是只为我们的应用程序的整体权限的基础上，我们的应用程序布局的一个子集。 我们的管理权限时大量使用这种区别用于显示目的，我宁可不要在这个时候重新审视代码，如果我能避免它。

有其他人遇到这个问题？ 你是怎么过去的呢？ 一般例子都很好，但我最感兴趣的是C＃具体的例子，如果有，我可以使用，以完成任务的任何语言特定的技巧。

也许不是neccessary，但这里是目前我处理的应用程序的部分定义的权限列表。

//Subgroup WebAgent
[Flags]
public enum WebAgentPermission : long
{
    [DescriptionAttribute("View Rule Group")]
    ViewRuleGroup = 1,
    [DescriptionAttribute("Add Rule Group")]
    AddRuleGroup = 2,
    [DescriptionAttribute("Edit Rule Group")]
    EditRuleGroup = 4,
    [DescriptionAttribute("Delete Rule Group")]
    DeleteRuleGroup = 8,
    [DescriptionAttribute("View Rule")]
    ViewRule = 16,
    [DescriptionAttribute("Add Rule")]
    AddRule = 32,
    [DescriptionAttribute("Edit Rule")]
    EditRule = 64,
    [DescriptionAttribute("Delete Rule")]
    DeleteRule = 128,
    [DescriptionAttribute("View Location")]
    ViewLocation = 256,
    [DescriptionAttribute("Add Location")]
    AddLocation = 512,
    [DescriptionAttribute("Edit Location")]
    EditLocation = 1024,
    [DescriptionAttribute("Delete Location")]
    DeleteLocation = 2048,
    [DescriptionAttribute("View Volume Statistics")]
    ViewVolumeStatistics = 4096,
    [DescriptionAttribute("Edit Volume Statistics")]
    EditVolumeStatistics = 8192,
    [DescriptionAttribute("Upload Volume Statistics")]
    UploadVolumeStatistics = 16384,
    [DescriptionAttribute("View Role")]
    ViewRole = 32768,
    [DescriptionAttribute("Add Role")]
    AddRole = 65536,
    [DescriptionAttribute("Edit Role")]
    EditRole = 131072,
    [DescriptionAttribute("Delete Role")]
    DeleteRole = 262144,
    [DescriptionAttribute("View User")]
    ViewUser = 524288,
    [DescriptionAttribute("Add User")]
    AddUser = 1048576,
    [DescriptionAttribute("Edit User")]
    EditUser = 2097152,
    [DescriptionAttribute("Delete User")]
    DeleteUser = 4194304,
    [DescriptionAttribute("Assign Permissions To User")]
    AssignPermissionsToUser = 8388608,
    [DescriptionAttribute("Change User Password")]
    ChangeUserPassword = 16777216,
    [DescriptionAttribute("View Audit Logs")]
    ViewAuditLogs = 33554432,
    [DescriptionAttribute("View Team")]
    ViewTeam = 67108864,
    [DescriptionAttribute("Add Team")]
    AddTeam = 134217728,
    [DescriptionAttribute("Edit Team")]
    EditTeam = 268435456,
    [DescriptionAttribute("Delete Team")]
    DeleteTeam = 536870912,
    [DescriptionAttribute("View Web Agent Reports")]
    ViewWebAgentReports = 1073741824,
    [DescriptionAttribute("View All Locations")]
    ViewAllLocations = 2147483648,
    [DescriptionAttribute("Access to My Search")]
    AccessToMySearch = 4294967296,
    [DescriptionAttribute("Access to Pespective Search")]
    AccessToPespectiveSearch = 8589934592,
    [DescriptionAttribute("Add Pespective Search")]
    AddPespectiveSearch = 17179869184,
    [DescriptionAttribute("Edit Pespective Search")]
    EditPespectiveSearch = 34359738368,
    [DescriptionAttribute("Delete Pespective Search")]
    DeletePespectiveSearch = 68719476736,
    [DescriptionAttribute("Access to Search")]
    AccessToSearch = 137438953472,
    [DescriptionAttribute("View Form Roles")]
    ViewFormRole = 274877906944,
    [DescriptionAttribute("Add / Edit Form Roles")]
    AddFormRole = 549755813888,
    [DescriptionAttribute("Delete UserFormRolesDifferenceMasks")]
    DeleteFormRole = 1099511627776,
    [DescriptionAttribute("Export Locations")]
    ExportLocations = 2199023255552,
    [DescriptionAttribute("Import Locations")]
    ImportLocations = 4398046511104,
    [DescriptionAttribute("Manage Location Levels")]
    ManageLocationLevels = 8796093022208,
    [DescriptionAttribute("View Job Title")]
    ViewJobTitle = 17592186044416,
    [DescriptionAttribute("Add Job Title")]
    AddJobTitle = 35184372088832,
    [DescriptionAttribute("Edit Job Title")]
    EditJobTitle = 70368744177664,
    [DescriptionAttribute("Delete Job Title")]
    DeleteJobTitle = 140737488355328,
    [DescriptionAttribute("View Dictionary Manager")]
    ViewDictionaryManager = 281474976710656,
    [DescriptionAttribute("Add Dictionary Manager")]
    AddDictionaryManager = 562949953421312,
    [DescriptionAttribute("Edit Dictionary Manager")]
    EditDictionaryManager = 1125899906842624,
    [DescriptionAttribute("Delete Dictionary Manager")]
    DeleteDictionaryManager = 2251799813685248,
    [DescriptionAttribute("View Choice Manager")]
    ViewChoiceManager = 4503599627370496,
    [DescriptionAttribute("Add Choice Manager")]
    AddChoiceManager = 9007199254740992,
    [DescriptionAttribute("Edit Chioce Manager")]
    EditChoiceManager = 18014398509481984,
    [DescriptionAttribute("Delete Choice Manager")]
    DeleteChoiceManager = 36028797018963968,
    [DescriptionAttribute("Import Export Choices")] //57
    ImportExportChoices = 72057594037927936
}

Answer 1:

我看到至少在那里不同枚举值屈指可数...

我首先想到的是通过在逻辑组拆分权限了（来解决这个问题RuleGroupPermissions ， RulePermissions ， LocationPermissions ，...），然后有一个类（ WebAgentPermissions ）使每个许可枚举类型的属性。

由于权限价值观似乎重复的，你很可能逃脱在最后一个枚举：

[Flags]
public enum Permissions
{
    View = 1,
    Add = 2,
    Edit = 4,
    Delete = 8
}

然后有WebAgentPermissions类公开的属性对每个地方的权限将被设置区域;

class WebAgentPermissions
{
    public Permissions RuleGroup { get; set; }
    public Permissions Rule{ get; set; }
    public Permissions Location{ get; set; }
    // and so on...
}

Answer 2:

语言文档说：

http://msdn.microsoft.com/en-us/library/system.flagsattribute.aspx

“基础类型是的Int32等的最大单个比特标志为1073741824，显然存在总共32个标志每个枚举是”。

然而...更新时间：

批评家是正确的。 看看这个：

http://msdn.microsoft.com/en-us/library/ms182147(VS.80).aspx

INT32是只有默认的数据类型！ 事实上，你可以指定的Int64。

public enum MyEnumType : Int64

...允许多达64个值。 但是，这肯定似乎是最大的，在这之后你要寻找的重新设计。 没有太多了解您的解决方案的其余部分，我不能说什么可能适合。 但是，特权标识符数组（或散列图）可能是最自然的方法。

Answer 3:

您可以检查BitArray类。 也许你会在将来使用它。

Answer 4:

事实证明，这是一个比较常见的问题比我想象的还要好，我在那里代表CSS类为标志的类型和有超过64点的可能性。 我已经采取了所有我从过程中学习，并把它变成一个可重用的模式，尽管是因为它是一个结构，这是一个复制和粘贴型的图案。

这是BigFlags “枚举类型”。 它使用任何BigInteger从System.Numerics ，或者如果没有办法可以引用组装，存在使用后备BitArray通过简单地关闭NUMERICS预处理指令。

它的行为非常象一个Flags枚举，甚至限定这样的事情HasFlag(...) GetNames() GetValues() TryParse(...)一个TypeConverter ， IConvertible等。由于它限定TypeConverter和IConvertible ，它也适合于，存储在数据存储器中虽然总是为一个字符串或文本数据类型。

您揭露“枚举”的价值观作为public static readonly成员。 联合枚举值公开为得到-唯一属性。

要使用它，复制和粘贴代码，然后执行搜索和替换上BigFlags与结构名称，然后删除该枚举TODO部分，并添加你的价值观。

希望有人认为它有用。

#define NUMERICS

using System;
using System.Collections;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.ComponentModel;
using System.Globalization;
using System.Linq;
#if NUMERICS
using System.Numerics;
#endif
using System.Reflection;
using System.Text;
using System.Threading.Tasks;


namespace Aim
{
    /// <summary>
    /// The BigFlags struct behaves like a Flags enumerated type.
    /// <para>
    /// Note that if this struct will be stored in some type of data
    /// store, it should be stored as a string type. There are two
    /// reasons for this:
    /// </para>
    /// <para>
    /// 1. Presumably, this pattern is being used because the number
    /// of values will exceed 64 (max positions in a long flags enum).
    /// Since this is so, there is in any case no numeric type which
    /// can store all the possible combinations of flags.
    /// </para>
    /// <para>
    /// 2. The "enum" values are assigned based on the order that the
    /// static public fields are defined. It is much safer to store
    /// these fields by name in case the fields are rearranged. This
    /// is particularly important if this represents a permission set!
    /// </para>
    /// </summary>
    [
    TypeConverter( typeof( BigFlagsConverter ) )
    ]
    public struct BigFlags : IEquatable<BigFlags>,
        IComparable<BigFlags>, IComparable, IConvertible
    {
        #region State...

        private static readonly List<FieldInfo> Fields;
        private static readonly List<BigFlags> FieldValues;
#if NUMERICS
        private static readonly bool ZeroInit = true;
        private BigInteger Value;

        /// <summary>
        /// Creates a value taking ZeroInit into consideration.
        /// </summary>
        /// <param name="index"></param>
        /// <returns></returns>
        private static BigInteger CreateValue( int index )
        {
            if( ZeroInit && index == 0 )
            {
                return 0;
            }
            int idx = ZeroInit ? index - 1 : index;

            return new BigInteger( 1 ) << idx;
        }
#else
        private BitArray Array;

        /// <summary>
        /// Lazy-initialized BitArray.
        /// </summary>
        private BitArray Bits
        {
            get
            {
                if( null == Array )
                {
                    Array = new BitArray( Fields.Count );
                }
                return Array;
            }
        }
#endif
        #endregion ...State

        #region Construction...

        /// <summary>
        /// Static constructor. Sets the static public fields.
        /// </summary>
        static BigFlags()
        {
            Fields = typeof( BigFlags ).GetFields(
                BindingFlags.Public | BindingFlags.Static ).ToList();
            FieldValues = new List<BigFlags>();
            for( int i = 0; i < Fields.Count; i++ )
            {
                var field = Fields[i];
                var fieldVal = new BigFlags();
#if NUMERICS
                fieldVal.Value = CreateValue( i );
#else
                fieldVal.Bits.Set( i, true );
#endif
                field.SetValue( null, fieldVal );
                FieldValues.Add( fieldVal );
            }
        }
        #endregion ...Construction

        #region Operators...

        /// <summary>
        /// OR operator. Or together BigFlags instances.
        /// </summary>
        /// <param name="lhs"></param>
        /// <param name="rhs"></param>
        /// <returns></returns>
        public static BigFlags operator |( BigFlags lhs, BigFlags rhs )
        {
            var result = new BigFlags();
#if NUMERICS
            result.Value = lhs.Value | rhs.Value;
#else
            // BitArray is modified in place - always copy!
            result.Array = new BitArray( lhs.Bits ).Or( rhs.Bits );
#endif

            return result;
        }

        /// <summary>
        /// AND operator. And together BigFlags instances.
        /// </summary>
        /// <param name="lhs"></param>
        /// <param name="rhs"></param>
        /// <returns></returns>
        public static BigFlags operator &( BigFlags lhs, BigFlags rhs )
        {
            var result = new BigFlags();
#if NUMERICS
            result.Value = lhs.Value & rhs.Value;
#else
            // BitArray is modified in place - always copy!
            result.Array = new BitArray( lhs.Bits ).And( rhs.Bits );
#endif

            return result;
        }

        /// <summary>
        /// XOR operator. Xor together BigFlags instances.
        /// </summary>
        /// <param name="lhs"></param>
        /// <param name="rhs"></param>
        /// <returns></returns>
        public static BigFlags operator ^( BigFlags lhs, BigFlags rhs )
        {
            var result = new BigFlags();
#if NUMERICS
            result.Value = lhs.Value ^ rhs.Value;
#else
            // BitArray is modified in place - always copy!
            result.Array = new BitArray( lhs.Bits ).Xor( rhs.Bits );
#endif

            return result;
        }

        /// <summary>
        /// Equality operator.
        /// </summary>
        /// <param name="lhs"></param>
        /// <param name="rhs"></param>
        /// <returns></returns>
        public static bool operator ==( BigFlags lhs, BigFlags rhs )
        {
            return lhs.Equals( rhs );
        }

        /// <summary>
        /// Inequality operator.
        /// </summary>
        /// <param name="lhs"></param>
        /// <param name="rhs"></param>
        /// <returns></returns>
        public static bool operator !=( BigFlags lhs, BigFlags rhs )
        {
            return !( lhs == rhs );
        }
        #endregion ...Operators

        #region System.Object Overrides...

        /// <summary>
        /// Overridden. Returns a comma-separated string.
        /// </summary>
        /// <returns></returns>
        public override string ToString()
        {
#if NUMERICS
            if( ZeroInit && Value == 0 )
            {
                return Fields[0].Name;
            }
#endif
            var names = new List<string>();
            for( int i = 0; i < Fields.Count; i++ )
            {
#if NUMERICS
                if( ZeroInit && i == 0 )
                    continue;

                var bi = CreateValue( i );
                if( ( Value & bi ) ==  bi )
                    names.Add( Fields[i].Name );
#else
                if( Bits[i] )
                    names.Add( Fields[i].Name );
#endif
            }

            return String.Join( ", ", names );
        }

        /// <summary>
        /// Overridden. Compares equality with another object.
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public override bool Equals( object obj )
        {
            if( obj is BigFlags )
            {
                return Equals( (BigFlags)obj );
            }

            return false;
        }

        /// <summary>
        /// Overridden. Gets the hash code of the internal BitArray.
        /// </summary>
        /// <returns></returns>
        public override int GetHashCode()
        {
#if NUMERICS
            return Value.GetHashCode();
#else
            int hash = 17;
            for( int i = 0; i < Bits.Length; i++ )
            {
                if( Bits[i] )
                    hash ^= i;
            }

            return hash;
#endif
        }
        #endregion ...System.Object Overrides

        #region IEquatable<BigFlags> Members...

        /// <summary>
        /// Strongly-typed equality method.
        /// </summary>
        /// <param name="other"></param>
        /// <returns></returns>
        public bool Equals( BigFlags other )
        {
#if NUMERICS
            return Value == other.Value;
#else
            for( int i = 0; i < Bits.Length; i++ )
            {
                if( Bits[i] != other.Bits[i] )
                    return false;
            }

            return true;
#endif
        }
        #endregion ...IEquatable<BigFlags> Members

        #region IComparable<BigFlags> Members...

        /// <summary>
        /// Compares based on highest bit set. Instance with higher
        /// bit set is bigger.
        /// </summary>
        /// <param name="other"></param>
        /// <returns></returns>
        public int CompareTo( BigFlags other )
        {
#if NUMERICS
            return Value.CompareTo( other.Value );
#else
            for( int i = Bits.Length - 1; i >= 0; i-- )
            {
                bool thisVal = Bits[i];
                bool otherVal = other.Bits[i];
                if( thisVal && !otherVal )
                    return 1;
                else if( !thisVal && otherVal )
                    return -1;
            }

            return 0;
#endif
        }
        #endregion ...IComparable<BigFlags> Members

        #region IComparable Members...

        int IComparable.CompareTo( object obj )
        {
            if( obj is BigFlags )
            {
                return CompareTo( (BigFlags)obj );
            }

            return -1;
        }
        #endregion ...IComparable Members

        #region IConvertible Members...

        /// <summary>
        /// Returns TypeCode.Object.
        /// </summary>
        /// <returns></returns>
        public TypeCode GetTypeCode()
        {
            return TypeCode.Object;
        }

        bool IConvertible.ToBoolean( IFormatProvider provider )
        {
            throw new NotSupportedException();
        }

        byte IConvertible.ToByte( IFormatProvider provider )
        {
#if NUMERICS
            return Convert.ToByte( Value );
#else
            throw new NotSupportedException();
#endif
        }

        char IConvertible.ToChar( IFormatProvider provider )
        {
            throw new NotSupportedException();
        }

        DateTime IConvertible.ToDateTime( IFormatProvider provider )
        {
            throw new NotSupportedException();
        }

        decimal IConvertible.ToDecimal( IFormatProvider provider )
        {
#if NUMERICS
            return Convert.ToDecimal( Value );
#else
            throw new NotSupportedException();
#endif
        }

        double IConvertible.ToDouble( IFormatProvider provider )
        {
#if NUMERICS
            return Convert.ToDouble( Value );
#else
            throw new NotSupportedException();
#endif
        }

        short IConvertible.ToInt16( IFormatProvider provider )
        {
#if NUMERICS
            return Convert.ToInt16( Value );
#else
            throw new NotSupportedException();
#endif
        }

        int IConvertible.ToInt32( IFormatProvider provider )
        {
#if NUMERICS
            return Convert.ToInt32( Value );
#else
            throw new NotSupportedException();
#endif
        }

        long IConvertible.ToInt64( IFormatProvider provider )
        {
#if NUMERICS
            return Convert.ToInt64( Value );
#else
            throw new NotSupportedException();
#endif
        }

        sbyte IConvertible.ToSByte( IFormatProvider provider )
        {
#if NUMERICS
            return Convert.ToSByte( Value );
#else
            throw new NotSupportedException();
#endif
        }

        float IConvertible.ToSingle( IFormatProvider provider )
        {
#if NUMERICS
            return Convert.ToSingle( Value );
#else
            throw new NotSupportedException();
#endif
        }

        string IConvertible.ToString( IFormatProvider provider )
        {
            return ToString();
        }

        object IConvertible.ToType( Type conversionType, IFormatProvider provider )
        {
            var tc = TypeDescriptor.GetConverter( this );

            return tc.ConvertTo( this, conversionType );
        }

        ushort IConvertible.ToUInt16( IFormatProvider provider )
        {
#if NUMERICS
            return Convert.ToUInt16( Value );
#else
            throw new NotSupportedException();
#endif
        }

        uint IConvertible.ToUInt32( IFormatProvider provider )
        {
#if NUMERICS
            return Convert.ToUInt32( Value );
#else
            throw new NotSupportedException();
#endif
        }

        ulong IConvertible.ToUInt64( IFormatProvider provider )
        {
#if NUMERICS
            return Convert.ToUInt64( Value );
#else
            throw new NotSupportedException();
#endif
        }
        #endregion ...IConvertible Members

        #region Public Interface...

        /// <summary>
        /// Checks <paramref name="flags"/> to see if all the bits set in
        /// that flags are also set in this flags.
        /// </summary>
        /// <param name="flags"></param>
        /// <returns></returns>
        public bool HasFlag( BigFlags flags )
        {
            return ( this & flags ) == flags;
        }

        /// <summary>
        /// Gets the names of this BigFlags enumerated type.
        /// </summary>
        /// <returns></returns>
        public static string[] GetNames()
        {
            return Fields.Select( x => x.Name ).ToArray();
        }

        /// <summary>
        /// Gets all the values of this BigFlags enumerated type.
        /// </summary>
        /// <returns></returns>
        public static BigFlags[] GetValues()
        {
            return FieldValues.ToArray();
        }

        /// <summary>
        /// Standard TryParse pattern. Parses a BigFlags result from a string.
        /// </summary>
        /// <param name="s"></param>
        /// <param name="result"></param>
        /// <returns></returns>
        public static bool TryParse( string s, out BigFlags result )
        {
            result = new BigFlags();
            if( String.IsNullOrEmpty( s ) )
                return true;

            var fieldNames = s.Split( ',' );
            foreach( var f in fieldNames )
            {
                var field = Fields.FirstOrDefault( x =>
                    String.Equals( x.Name, f.Trim(),
                    StringComparison.OrdinalIgnoreCase ) );
                if( null == field )
                {
                    result = new BigFlags();
                    return false;
                }
#if NUMERICS
                int i = Fields.IndexOf( field );
                result.Value |= CreateValue( i );
#else
                result.Bits.Set( Fields.IndexOf( field ), true );
#endif
            }

            return true;
        }

        //
        // Expose "enums" as public static readonly fields.
        // TODO: Replace this section with your "enum" values.
        //
        public static readonly BigFlags None;
        public static readonly BigFlags FirstValue;
        public static readonly BigFlags ValueTwo;
        public static readonly BigFlags ValueThree;
        public static readonly BigFlags ValueFour;
        public static readonly BigFlags ValueFive;
        public static readonly BigFlags ValueSix;
        public static readonly BigFlags LastValue;

        /// <summary>
        /// Expose flagged combinations as get-only properties.
        /// </summary>
        public static BigFlags FirstLast
        {
            get
            {
                return BigFlags.FirstValue | BigFlags.LastValue;
            }
        }
        #endregion ...Public Interface
    }

    /// <summary>
    /// Converts objects to and from BigFlags instances.
    /// </summary>
    public class BigFlagsConverter : TypeConverter
    {
        /// <summary>
        /// Can convert to string only.
        /// </summary>
        /// <param name="context"></param>
        /// <param name="destinationType"></param>
        /// <returns></returns>
        public override bool CanConvertTo( ITypeDescriptorContext context,
            Type destinationType )
        {
            return destinationType == typeof( String );
        }

        /// <summary>
        /// Can convert from any object.
        /// </summary>
        /// <param name="context"></param>
        /// <param name="sourceType"></param>
        /// <returns></returns>
        public override bool CanConvertFrom( ITypeDescriptorContext context,
            Type sourceType )
        {
            return true;
        }

        /// <summary>
        /// Converts BigFlags to a string.
        /// </summary>
        /// <param name="context"></param>
        /// <param name="culture"></param>
        /// <param name="value"></param>
        /// <param name="destinationType"></param>
        /// <returns></returns>
        public override object ConvertTo( ITypeDescriptorContext context,
            CultureInfo culture, object value, Type destinationType )
        {
            if( value is BigFlags && CanConvertTo( destinationType ) )
                return value.ToString();

            return null;
        }

        /// <summary>
        /// Attempts to parse <paramref name="value"/> and create and
        /// return a new BigFlags instance.
        /// </summary>
        /// <param name="context"></param>
        /// <param name="culture"></param>
        /// <param name="value"></param>
        /// <returns></returns>
        public override object ConvertFrom( ITypeDescriptorContext context,
            CultureInfo culture, object value )
        {
            var s = Convert.ToString( value );
            BigFlags result;
            BigFlags.TryParse( s, out result );

            return result;
        }
    }
}

Answer 5:

在C＃，一个灵活的方式来表示一个值，该值是排序枚举的但更灵活的是将其表示为具有可用预煮的值，这样一个静态类：

public sealed class WebAgentPermission
{
    private long ID;

    public static readonly WebAgentPermission
        ViewRuleGroup = new WebAgentPermission { ID = 1 };
    public static readonly WebAgentPermission
        AddRuleGroup  = new WebAgentPermission { ID = 2 };

    private WebAgentPermission() { } 

    // considerations: override equals/gethashcode, probably override tostring,
    // maybe implicit cast to/from long, maybe other stuff
}

另外，刚刚拆分的事情了; 它看起来像你可以，如果你真的尽力了。

Answer 6:

如果我在这个应用程序的控制权，我可能会拿出一套共同的权限（查看，添加，编辑，删除，上传/进口）和一组资源的（用户，角色，规则等）。 在网页上找到与该页面相关联的资源类型，然后检查权限。 也许是这样的：

Permissions perms = agent.GetPermissions(ResourceType.User);
if((perms & Permissions.View) == Permissions.View) { /* do work */ }

要么

Permissions perms = agent.Permissions[ResourceType.User];
if((perms & Permissions.View) == Permissions.View) { /* do work */ }

甚至

if(agent.IsAuthorized(ResourceType.User, Permissions.View)) { /* do work */ }

你有一对夫妇权限不与一切意义的（分配Permissoins用户，仅举一个）。 我不知道我会如何根据我知之甚少的问题搞定。

Answer 7:

我没有过这种情况。

这里是我的想法，每个类别创建单独的枚举和接受这些作为参数。

RuleGroupPermission
    None = 0
    ViewRuleGroup = 1,
    AddRuleGroup = 2,
    EditRuleGroup = 4,
    DeleteRuleGroup = 8,

LocationOperations
    None = 0
    Add = 1
    View = 2
    Delete = 4

void setPermission(RuleGroupPermission ruleGroupOpsAllowed, LocationOperations locationOptions)
{
   ...
}

编辑：看看messagebox.show是怎么做的。 OK，从艾伯塔省问题，信息，感叹号分隔。

文章来源: What to do when bit mask (flags) enum gets too large