LocalBuilder Class
Represents a local variable within a method or constructor.
Assembly: mscorlib (in mscorlib.dll)
The LocalBuilder type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | IsPinned | Gets a value indicating whether the object referred to by the local variable is pinned in memory. (Overrides LocalVariableInfo::IsPinned.) |
![]() | LocalIndex | Gets the zero-based index of the local variable within the method body. (Overrides LocalVariableInfo::LocalIndex.) |
![]() | LocalType | Gets the type of the local variable. (Overrides LocalVariableInfo::LocalType.) |
| Name | Description | |
|---|---|---|
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | SetLocalSymInfo(String) | Sets the name of this local variable. |
![]() | SetLocalSymInfo(String, Int32, Int32) | Sets the name and lexical scope of this local variable. |
![]() | ToString | Returns a user-readable string that describes the local variable. (Inherited from LocalVariableInfo.) |
| Name | Description | |
|---|---|---|
![]() ![]() | _LocalBuilder::GetIDsOfNames | Maps a set of names to a corresponding set of dispatch identifiers. |
![]() ![]() | _LocalBuilder::GetTypeInfo | Retrieves the type information for an object, which can then be used to get the type information for an interface. |
![]() ![]() | _LocalBuilder::GetTypeInfoCount | Retrieves the number of type information interfaces that an object provides (either 0 or 1). |
![]() ![]() | _LocalBuilder::Invoke | Provides access to properties and methods exposed by an object. |
A LocalBuilder object can be defined using the DeclareLocal method.
The following example creates a static method (Shared in Visual Basic) named Function1 that returns a string and has a parameter of type Int32. In the body of the method, the code example creates LocalBuilder objects representing two local variables, and sets symbol information for the local variables. The method does not do anything significant, but the method body demonstrates storing a parameter to a local variable, storing a literal string to a local variable, and loading a local variable.
using namespace System; using namespace System::Reflection; using namespace System::Reflection::Emit; using namespace System::Threading; int main() { // Create an assembly. AssemblyName^ myAssemblyName = gcnew AssemblyName; myAssemblyName->Name = "SampleAssembly"; AssemblyBuilder^ myAssembly = Thread::GetDomain()->DefineDynamicAssembly( myAssemblyName, AssemblyBuilderAccess::RunAndSave ); // Create a module. For a single-file assembly the module // name is usually the same as the assembly name. ModuleBuilder^ myModule = myAssembly->DefineDynamicModule( myAssemblyName->Name, myAssemblyName->Name + ".dll", true ); // Define a public class 'Example'. TypeBuilder^ myTypeBuilder = myModule->DefineType( "Example", TypeAttributes::Public ); // Create the 'Function1' public method, which takes an integer // and returns a string. MethodBuilder^ myMethod = myTypeBuilder->DefineMethod( "Function1", MethodAttributes::Public | MethodAttributes::Static, String::typeid, gcnew array<Type^> { int::typeid } ); // Generate IL for 'Function1'. The function body demonstrates // assigning an argument to a local variable, assigning a // constant string to a local variable, and putting the contents // of local variables on the stack. ILGenerator^ myMethodIL = myMethod->GetILGenerator(); // Create local variables named myString and myInt. LocalBuilder^ myLB1 = myMethodIL->DeclareLocal( String::typeid ); myLB1->SetLocalSymInfo( "myString" ); Console::WriteLine( "local 'myString' type is: {0}", myLB1->LocalType ); LocalBuilder^ myLB2 = myMethodIL->DeclareLocal( int::typeid ); myLB2->SetLocalSymInfo( "myInt", 1, 2 ); Console::WriteLine( "local 'myInt' type is: {0}", myLB2->LocalType ); // Store the function argument in myInt. myMethodIL->Emit( OpCodes::Ldarg_0 ); myMethodIL->Emit( OpCodes::Stloc_1 ); // Store a literal value in myString, and return the value. myMethodIL->Emit( OpCodes::Ldstr, "string value" ); myMethodIL->Emit( OpCodes::Stloc_0 ); myMethodIL->Emit( OpCodes::Ldloc_0 ); myMethodIL->Emit( OpCodes::Ret ); // Create "Example" class. Type^ myType1 = myTypeBuilder->CreateType(); Console::WriteLine( "'Example' is created." ); myAssembly->Save(myAssemblyName->Name + ".dll"); Console::WriteLine( "'{0}' is created.", myAssemblyName->Name + ".dll" ); // Invoke 'Function1' method of 'Example', passing the value 42. Object^ myObject2 = myType1->InvokeMember( "Function1", BindingFlags::InvokeMethod, nullptr, nullptr, gcnew array<Object^> { 42 } ); Console::WriteLine( "Example::Function1 returned: {0}", myObject2 ); } /* This code example produces the following output: local 'myString' type is: System.String local 'myInt' type is: System.Int32 'Example' is created. 'SampleAssembly.dll' is created. Example::Function1 returned: string value */
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
