EnumBuilder::DefineLiteral Method (String^, Object^)
Defines the named static field in an enumeration type with the specified constant value.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- literalName
-
Type:
System::String^
The name of the static field.
- literalValue
-
Type:
System::Object^
The constant value of the literal.
The defined field will have the field attributes Public, Static, and Literal set.
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In the .NET Framework versions 1.0 and 1.1, it is necessary to define enumerations using TypeBuilder because EnumBuilder emits enumerations whose elements are of type Int32 instead of the enumeration type. In the .NET Framework version 2.0, EnumBuilder emits enumerations whose elements have the correct type. |
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. After the type has been created, the assembly is saved with the name TempAssembly.dll. You can use the Ildasm.exe (IL Disassembler) to examine the contents of this assembly.
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Prior to the .NET Framework version 2.0, this code example does not produce a correct enumeration. |
using namespace System; using namespace System::Reflection; using namespace System::Reflection::Emit; void main() { // 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 and saved to disk. AssemblyName^ aName = gcnew AssemblyName("TempAssembly"); AssemblyBuilder^ ab = currentDomain->DefineDynamicAssembly( aName, AssemblyBuilderAccess::RunAndSave); // Define a dynamic module in "TempAssembly" assembly. For a single- // module assembly, the module has the same name as the assembly. ModuleBuilder^ mb = ab->DefineDynamicModule(aName->Name, aName->Name + ".dll"); // Define a public enumeration with the name "Elevation" and an // underlying type of Int32. EnumBuilder^ eb = mb->DefineEnum("Elevation", TypeAttributes::Public, int::typeid); // Define two members, "High" and "Low". eb->DefineLiteral("Low", (Object^) 0); eb->DefineLiteral("High", 1); // Create the type and save the assembly. Type^ finished = eb->CreateType(); ab->Save(aName->Name + ".dll"); for each (Object^ o in Enum::GetValues(finished)) { Console::WriteLine("{0}.{1} = {2}", finished, o, (int)o); } } /* This code example produces the following output: Elevation.Low = 0 Elevation.High = 1 */
Available since 1.1
Silverlight
Available since 2.0
