EnumBuilder Class

Describes and represents an enumeration type.

Inheritance Hierarchy

System.Object
  System.Reflection.MemberInfo
    System.Type
      System.Reflection.Emit.EnumBuilder

Namespace:  System.Reflection.Emit
Assembly:  mscorlib (in mscorlib.dll)

Syntax

'Declaration
<ComVisibleAttribute(True)> _
<ClassInterfaceAttribute(ClassInterfaceType.None)> _
Public NotInheritable Class EnumBuilder _
    Inherits Type
[ComVisibleAttribute(true)]
[ClassInterfaceAttribute(ClassInterfaceType.None)]
public sealed class EnumBuilder : Type

The EnumBuilder type exposes the following members.

Properties

  Name Description
Public property Assembly Retrieves the dynamic assembly that contains this enum definition. (Overrides Type.Assembly.)
Public property AssemblyQualifiedName Returns the full path of this enum qualified by the display name of the parent assembly. (Overrides Type.AssemblyQualifiedName.)
Public property Attributes Gets the attributes associated with the Type. (Inherited from Type.)
Public property BaseType Returns the parent Type of this type which is always Enum. (Overrides Type.BaseType.)
Public property ContainsGenericParameters Gets a value indicating whether the current Type object has type parameters that have not been replaced by specific types. (Inherited from Type.)
Public property DeclaringMethod Gets a MethodBase that represents the declaring method, if the current Type represents a type parameter of a generic method. (Inherited from Type.)
Public property DeclaringType Returns the type that declared this EnumBuilder. (Overrides Type.DeclaringType.)
Public property FullName Returns the full path of this enumeration. (Overrides Type.FullName.)
Public property GenericParameterAttributes Gets a combination of GenericParameterAttributes flags that describe the covariance and special constraints of the current generic type parameter. (Inherited from Type.)
Public property GenericParameterPosition Gets the position of the type parameter in the type parameter list of the generic type or method that declared the parameter, when the Type object represents a type parameter of a generic type or a generic method. (Inherited from Type.)
Public property GUID Returns the GUID of this enum. (Overrides Type.GUID.)
Public property HasElementType Gets a value indicating whether the current Type encompasses or refers to another type; that is, whether the current Type is an array, a pointer, or is passed by reference. (Inherited from Type.)
Public property IsAbstract Gets a value indicating whether the Type is abstract and must be overridden. (Inherited from Type.)
Public property IsAnsiClass Gets a value indicating whether the string format attribute AnsiClass is selected for the Type. (Inherited from Type.)
Public property IsArray Gets a value indicating whether the Type is an array. (Inherited from Type.)
Public property IsAutoClass Gets a value indicating whether the string format attribute AutoClass is selected for the Type. (Inherited from Type.)
Public property IsAutoLayout Gets a value indicating whether the class layout attribute AutoLayout is selected for the Type. (Inherited from Type.)
Public property IsByRef Gets a value indicating whether the Type is passed by reference. (Inherited from Type.)
Public property IsClass Gets a value indicating whether the Type is a class; that is, not a value type or interface. (Inherited from Type.)
Public property IsCOMObject Gets a value indicating whether the Type is a COM object. (Inherited from Type.)
Public property IsEnum Gets a value indicating whether the current Type represents an enumeration. (Inherited from Type.)
Public property IsGenericParameter Gets a value indicating whether the current Type represents a type parameter in the definition of a generic type or method. (Inherited from Type.)
Public property IsGenericType Gets a value indicating whether the current type is a generic type. (Inherited from Type.)
Public property IsGenericTypeDefinition Gets a value indicating whether the current Type represents a generic type definition, from which other generic types can be constructed. (Inherited from Type.)
Public property IsImport Gets a value indicating whether the Type has a ComImportAttribute attribute applied, indicating that it was imported from a COM type library. (Inherited from Type.)
Public property IsInterface Gets a value indicating whether the Type is an interface; that is, not a class or a value type. (Inherited from Type.)
Public property IsNested Gets a value indicating whether the current Type object represents a type whose definition is nested inside the definition of another type. (Inherited from Type.)
Public property IsNestedAssembly Gets a value indicating whether the Type is nested and visible only within its own assembly. (Inherited from Type.)
Public property IsNestedFamANDAssem Gets a value indicating whether the Type is nested and visible only to classes that belong to both its own family and its own assembly. (Inherited from Type.)
Public property IsNestedFamily Gets a value indicating whether the Type is nested and visible only within its own family. (Inherited from Type.)
Public property IsNestedFamORAssem Gets a value indicating whether the Type is nested and visible only to classes that belong to either its own family or to its own assembly. (Inherited from Type.)
Public property IsNestedPrivate Gets a value indicating whether the Type is nested and declared private. (Inherited from Type.)
Public property IsNestedPublic Gets a value indicating whether a class is nested and declared public. (Inherited from Type.)
Public property IsNotPublic Gets a value indicating whether the Type is not declared public. (Inherited from Type.)
Public property IsPointer Gets a value indicating whether the Type is a pointer. (Inherited from Type.)
Public property IsPrimitive Gets a value indicating whether the Type is one of the primitive types. (Inherited from Type.)
Public property IsPublic Gets a value indicating whether the Type is declared public. (Inherited from Type.)
Public property IsSealed Gets a value indicating whether the Type is declared sealed. (Inherited from Type.)
Public property IsSpecialName Gets a value indicating whether the Type has a name that requires special handling. (Inherited from Type.)
Public property IsUnicodeClass Gets a value indicating whether the string format attribute UnicodeClass is selected for the Type. (Inherited from Type.)
Public property IsValueType Gets a value indicating whether the Type is a value type. (Inherited from Type.)
Public property IsVisible Gets a value indicating whether the Type can be accessed by code outside the assembly. (Inherited from Type.)
Public property MemberType Gets a MemberTypes value indicating that this member is a type or a nested type. (Inherited from Type.)
Public property MetadataToken Gets a value that identifies a metadata element. (Inherited from MemberInfo.)
Public property Module Retrieves the dynamic module that contains this EnumBuilder definition. (Overrides Type.Module.)
Public property Name Returns the name of this enum. (Overrides MemberInfo.Name.)
Public property Namespace Returns the namespace of this enum. (Overrides Type.Namespace.)
Public property ReflectedType Returns the type that was used to obtain this EnumBuilder. (Overrides Type.ReflectedType.)
Public property TypeHandle Retrieves the internal handle for this enum. (Overrides Type.TypeHandle.)
Public property TypeToken Gets the internal metadata type token of this enum.
Public property UnderlyingField Gets the underlying field for this enum.
Public property UnderlyingSystemType Gets the underlying system type for this enum. (Overrides Type.UnderlyingSystemType.)

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Methods

  Name Description
Public method CreateType Creates a Type object for this enum.
Public method DefineLiteral Defines the named static field in an enumeration type with the specified constant value.
Public method Equals(Object) Determines if the underlying system type of the current Type is the same as the underlying system type of the specified Object. (Inherited from Type.)
Public method Equals(Type) Determines if the underlying system type of the current Type is the same as the underlying system type of the specified Type. (Inherited from Type.)
Protected method Finalize Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public method FindMembers Returns a filtered array of MemberInfo objects of the specified member type. (Inherited from Type.)
Public method GetArrayRank Gets the number of dimensions in an Array. (Inherited from Type.)
Protected method GetAttributeFlagsImpl When overridden in a derived class, implements the Attributes property and gets a bitmask indicating the attributes associated with the Type. (Inherited from Type.)
Public method GetConstructor(array<Type[]) Searches for a public instance constructor whose parameters match the types in the specified array. (Inherited from Type.)
Public method GetConstructor(BindingFlags, Binder, array<Type[], array<ParameterModifier[]) Searches for a constructor whose parameters match the specified argument types and modifiers, using the specified binding constraints. (Inherited from Type.)
Protected method GetConstructorImpl When overridden in a derived class, searches for a constructor whose parameters match the specified argument types and modifiers, using the specified binding constraints and the specified calling convention. (Inherited from Type.)
Public method GetConstructors() Returns all the public constructors defined for the current Type. (Inherited from Type.)
Public method GetConstructors(BindingFlags) Returns an array of ConstructorInfo objects representing the public and non-public constructors defined for this class, as specified. (Overrides Type.GetConstructors(BindingFlags).)
Public method GetCustomAttributes(Boolean) Returns all the custom attributes defined for this constructor. (Overrides MemberInfo.GetCustomAttributes(Boolean).)
Public method GetCustomAttributes(Type, Boolean) Returns the custom attributes identified by the given type. (Overrides MemberInfo.GetCustomAttributes(Type, Boolean).)
Public method GetDefaultMembers Searches for the members defined for the current Type whose DefaultMemberAttribute is set. (Inherited from Type.)
Public method GetElementType Calling this method always throws NotSupportedException. (Overrides Type.GetElementType().)
Public method GetEvent(String) Returns the EventInfo object representing the specified public event. (Inherited from Type.)
Public method GetEvent(String, BindingFlags) Returns the event with the specified name. (Overrides Type.GetEvent(String, BindingFlags).)
Public method GetEvents() Returns the events for the public events declared or inherited by this type. (Overrides Type.GetEvents().)
Public method GetEvents(BindingFlags) Returns the public and non-public events that are declared by this type. (Overrides Type.GetEvents(BindingFlags).)
Public method GetField(String) Searches for the public field with the specified name. (Inherited from Type.)
Public method GetField(String, BindingFlags) Returns the field specified by the given name. (Overrides Type.GetField(String, BindingFlags).)
Public method GetFields() Returns all the public fields of the current Type. (Inherited from Type.)
Public method GetFields(BindingFlags) Returns the public and non-public fields that are declared by this type. (Overrides Type.GetFields(BindingFlags).)
Public method GetGenericArguments Returns an array of Type objects that represent the type arguments of a generic type or the type parameters of a generic type definition. (Inherited from Type.)
Public method GetGenericParameterConstraints Returns an array of Type objects that represent the constraints on the current generic type parameter. (Inherited from Type.)
Public method GetGenericTypeDefinition Returns a Type object that represents a generic type definition from which the current generic type can be constructed. (Inherited from Type.)
Public method GetHashCode Returns the hash code for this instance. (Inherited from Type.)
Public method GetInterface Returns the interface implemented (directly or indirectly) by this type, with the specified fully-qualified name. (Overrides Type.GetInterface(String, Boolean).)
Public method GetInterfaceMap Returns an interface mapping for the interface requested. (Overrides Type.GetInterfaceMap(Type).)
Public method GetInterfaces Returns an array of all the interfaces implemented on this a class and its base classes. (Overrides Type.GetInterfaces().)
Public method GetMember(String) Searches for the public members with the specified name. (Inherited from Type.)
Public method GetMember(String, BindingFlags) Searches for the specified members, using the specified binding constraints. (Inherited from Type.)
Public method GetMember(String, MemberTypes, BindingFlags) Returns all members with the specified name, type, and binding that are declared or inherited by this type. (Overrides Type.GetMember(String, MemberTypes, BindingFlags).)
Public method GetMembers() Returns all the public members of the current Type. (Inherited from Type.)
Public method GetMembers(BindingFlags) Returns the specified members declared or inherited by this type,. (Overrides Type.GetMembers(BindingFlags).)
Public method GetMethod(String) Searches for the public method with the specified name. (Inherited from Type.)
Public method GetMethod(String, BindingFlags) Searches for the specified method, using the specified binding constraints. (Inherited from Type.)
Public method GetMethod(String, array<Type[]) Searches for the specified public method whose parameters match the specified argument types. (Inherited from Type.)
Public method GetMethod(String, array<Type[], array<ParameterModifier[]) Searches for the specified public method whose parameters match the specified argument types and modifiers. (Inherited from Type.)
Public method GetMethod(String, BindingFlags, Binder, array<Type[], array<ParameterModifier[]) Searches for the specified method whose parameters match the specified argument types and modifiers, using the specified binding constraints. (Inherited from Type.)
Public method GetMethod(String, BindingFlags, Binder, CallingConventions, array<Type[], array<ParameterModifier[]) Searches for the specified method whose parameters match the specified argument types and modifiers, using the specified binding constraints and the specified calling convention. (Inherited from Type.)
Protected method GetMethodImpl When overridden in a derived class, searches for the specified method whose parameters match the specified argument types and modifiers, using the specified binding constraints and the specified calling convention. (Inherited from Type.)
Public method GetMethods() Returns all the public methods of the current Type. (Inherited from Type.)
Public method GetMethods(BindingFlags) Returns all the public and non-public methods declared or inherited by this type, as specified. (Overrides Type.GetMethods(BindingFlags).)
Public method GetNestedType Returns the specified nested type that is declared by this type. (Overrides Type.GetNestedType(String, BindingFlags).)
Public method GetNestedTypes Returns the public and non-public nested types that are declared or inherited by this type. (Overrides Type.GetNestedTypes(BindingFlags).)
Public method GetProperties() Returns all the public properties of the current Type. (Inherited from Type.)
Public method GetProperties(BindingFlags) Returns all the public and non-public properties declared or inherited by this type, as specified. (Overrides Type.GetProperties(BindingFlags).)
Public method GetProperty(String) Searches for the public property with the specified name. (Inherited from Type.)
Public method GetProperty(String, BindingFlags) Searches for the specified property, using the specified binding constraints. (Inherited from Type.)
Public method GetProperty(String, Type) Searches for the public property with the specified name and return type. (Inherited from Type.)
Public method GetProperty(String, Type, array<Type[]) Searches for the specified public property whose parameters match the specified argument types. (Inherited from Type.)
Public method GetProperty(String, Type, array<Type[], array<ParameterModifier[]) Searches for the specified public property whose parameters match the specified argument types and modifiers. (Inherited from Type.)
Public method GetProperty(String, BindingFlags, Binder, Type, array<Type[], array<ParameterModifier[]) Searches for the specified property whose parameters match the specified argument types and modifiers, using the specified binding constraints. (Inherited from Type.)
Protected method GetPropertyImpl When overridden in a derived class, searches for the specified property whose parameters match the specified argument types and modifiers, using the specified binding constraints. (Inherited from Type.)
Public method GetType() Gets the current Type. (Inherited from Type.)
Protected method HasElementTypeImpl When overridden in a derived class, implements the HasElementType property and determines whether the current Type encompasses or refers to another type; that is, whether the current Type is an array, a pointer, or is passed by reference. (Inherited from Type.)
Public method InvokeMember(String, BindingFlags, Binder, Object, array<Object[]) Invokes the specified member, using the specified binding constraints and matching the specified argument list. (Inherited from Type.)
Public method InvokeMember(String, BindingFlags, Binder, Object, array<Object[], array<ParameterModifier[], CultureInfo, array<String[]) Invokes the specified member. The method that is to be invoked must be accessible and provide the most specific match with the specified argument list, under the contraints of the specified binder and invocation attributes. (Overrides Type.InvokeMember(String, BindingFlags, Binder, Object, array<Object[], array<ParameterModifier[], CultureInfo, array<String[]).)
Protected method IsArrayImpl When overridden in a derived class, implements the IsArray property and determines whether the Type is an array. (Inherited from Type.)
Public method IsAssignableFrom Determines whether an instance of the current Type can be assigned from an instance of the specified Type. (Inherited from Type.)
Protected method IsByRefImpl When overridden in a derived class, implements the IsByRef property and determines whether the Type is passed by reference. (Inherited from Type.)
Protected method IsCOMObjectImpl When overridden in a derived class, implements the IsCOMObject property and determines whether the Type is a COM object. (Inherited from Type.)
Public method IsDefined Checks if the specified custom attribute type is defined. (Overrides MemberInfo.IsDefined(Type, Boolean).)
Public method IsInstanceOfType Determines whether the specified object is an instance of the current Type. (Inherited from Type.)
Protected method IsPointerImpl When overridden in a derived class, implements the IsPointer property and determines whether the Type is a pointer. (Inherited from Type.)
Protected method IsPrimitiveImpl When overridden in a derived class, implements the IsPrimitive property and determines whether the Type is one of the primitive types. (Inherited from Type.)
Public method IsSubclassOf Determines whether the class represented by the current Type derives from the class represented by the specified Type. (Inherited from Type.)
Protected method IsValueTypeImpl Implements the IsValueType property and determines whether the Type is a value type; that is, not a class or an interface. (Inherited from Type.)
Public method MakeArrayType() Returns a Type object representing a one-dimensional array of the current type, with a lower bound of zero. (Overrides Type.MakeArrayType().)
Public method MakeArrayType(Int32) Returns a Type object representing an array of the current type, with the specified number of dimensions. (Overrides Type.MakeArrayType(Int32).)
Public method MakeByRefType Returns a Type object that represents the current type when passed as a ref parameter (ByRef parameter in Visual Basic). (Overrides Type.MakeByRefType().)
Public method MakeGenericType Substitutes the elements of an array of types for the type parameters of the current generic type definition and returns a Type object representing the resulting constructed type. (Inherited from Type.)
Public method MakePointerType Returns a Type object that represents a pointer to the current type. (Overrides Type.MakePointerType().)
Protected method MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public method SetCustomAttribute Sets a custom attribute using a custom attribute builder.
Public method ToString Returns a String representing the name of the current Type. (Inherited from Type.)

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Remarks

To get an EnumBuilder, use the ModuleBuilder.DefineEnum method. To define a nested enumeration, use one of the overloads of the TypeBuilder.DefineNestedType method that specifies a base type. Specify Enum as the base type.

Examples

The following code example demonstrates the construction of an enumeration within a dynamic assembly, using EnumBuilder. The example defines an enumeration named Elevation, with an underlying type of Int32, and creates two elements: Low, with a value of 0, and High, with a value of 1.

Imports System.Reflection
Imports System.Reflection.Emit

Class Example

   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)

      ' Get the current application domain for the current thread.
      Dim currentDomain As AppDomain = AppDomain.CurrentDomain

      ' Create a dynamic assembly in the current application domain, 
      ' and allow it to be executed.
      Dim aName As AssemblyName = New AssemblyName("TempAssembly")
      Dim ab As AssemblyBuilder = currentDomain.DefineDynamicAssembly( _
          aName, AssemblyBuilderAccess.Run)

      ' Define a dynamic module in "TempAssembly" assembly. The module can
      ' have the same name as the assembly.
      Dim mb As ModuleBuilder = _
          ab.DefineDynamicModule(aName.Name)

      ' Define a public enumeration with the name "Elevation" and an 
      ' underlying type of Integer.
      Dim eb As EnumBuilder = _
          mb.DefineEnum("Elevation", TypeAttributes.Public, GetType(Integer))

      ' Define two members, "High" and "Low".
      eb.DefineLiteral("Low", 0)
      eb.DefineLiteral("High", 1)

      ' Create the type.
      Dim finished As Type = eb.CreateType()

      For Each fi As FieldInfo in finished.GetFields()
         outputBlock.Text += String.Format("{0}.{1} = {2}" & vbCrLf, _
            finished.Name, fi.Name, fi.GetRawConstantValue())
      Next
   End Sub
End Class

' This code example produces the following output:
'
'Elevation.Low = 0
'Elevation.High = 1 
using System;
using System.Reflection;
using System.Reflection.Emit;

class Example
{
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      // Get the current application domain for the current thread.
      AppDomain currentDomain = AppDomain.CurrentDomain;

      // Create a dynamic assembly in the current application domain, 
      // and allow it to be executed.
      AssemblyName aName = new AssemblyName("TempAssembly");
      AssemblyBuilder ab = currentDomain.DefineDynamicAssembly(
          aName, AssemblyBuilderAccess.Run);

      // Define a dynamic module in "TempAssembly" assembly. The module can
      // have the same name as the assembly.
      ModuleBuilder mb = ab.DefineDynamicModule(aName.Name);

      // Define a public enumeration with the name "Elevation" and an 
      // underlying type of Integer.
      EnumBuilder eb = mb.DefineEnum("Elevation", TypeAttributes.Public, typeof(int));

      // Define two members, "High" and "Low".
      eb.DefineLiteral("Low", 0);
      eb.DefineLiteral("High", 1);

      // Create the type.
      Type finished = eb.CreateType();

      foreach (FieldInfo fi in finished.GetFields())
      {
         outputBlock.Text += String.Format("{0}.{1} = {2}\n", 
            finished.Name, fi.Name, fi.GetRawConstantValue());
      }
   }
}

/* This code example produces the following output:

Elevation.Low = 0
Elevation.High = 1 
 */

Version Information

Silverlight

Supported in: 5, 4, 3

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.