LocalBuilder Třída

Definice

Představuje místní proměnnou v rámci metody nebo konstruktoru.Represents a local variable within a method or constructor.

public ref class LocalBuilder sealed : System::Reflection::LocalVariableInfo, System::Runtime::InteropServices::_LocalBuilder
[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]
[System.Runtime.InteropServices.ComVisible(true)]
public sealed class LocalBuilder : System.Reflection.LocalVariableInfo, System.Runtime.InteropServices._LocalBuilder
type LocalBuilder = class
    inherit LocalVariableInfo
    interface _LocalBuilder
Public NotInheritable Class LocalBuilder
Inherits LocalVariableInfo
Implements _LocalBuilder
Dědičnost
LocalBuilder
Atributy
Implementuje

Příklady

Následující příklad vytvoří static metodu (Shared v Visual Basic) s názvem Function1 , která vrací řetězec a má parametr typu Int32.The following example creates a static method (Shared in Visual Basic) named Function1 that returns a string and has a parameter of type Int32. V těle metody vytvoří LocalBuilder příklad kódu objekty reprezentující dvě místní proměnné a nastaví informace o symbolech pro místní proměnné.In the body of the method, the code example creates LocalBuilder objects representing two local variables, and sets symbol information for the local variables. Metoda nedělá něco významného, ale tělo metody ukazuje uložení parametru místní proměnné, uložení řetězcového literálu do lokální proměnné a načtení místní proměnné.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
 */
using System;
using System.Reflection;
using System.Reflection.Emit;
using System.Threading;

class LocalBuilder_Sample
{
    public static void Main()
    {
        // Create an assembly.
        AssemblyName myAssemblyName = new 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, 
           typeof(String), new Type[] { typeof(int) });

        // 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(typeof(string));
        myLB1.SetLocalSymInfo("myString");
        Console.WriteLine("local 'myString' type is: {0}", myLB1.LocalType);

        LocalBuilder myLB2 = myMethodIL.DeclareLocal(typeof(int));
        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, null, null, new 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
 */
Imports System.Reflection
Imports System.Reflection.Emit
Imports System.Threading

Class LocalBuilder_Sample

    Public Shared Sub Main()

        ' Create an assembly.
        Dim myAssemblyName As New AssemblyName()
        myAssemblyName.Name = "SampleAssembly"

        Dim myAssembly As AssemblyBuilder = _
            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.
        Dim myModule As ModuleBuilder = _
            myAssembly.DefineDynamicModule(myAssemblyName.Name, _
                myAssemblyName.Name & ".dll", True)

        ' Define a public class 'Example'.
        Dim myTypeBuilder As TypeBuilder = _
            myModule.DefineType("Example", TypeAttributes.Public)

        ' Create the 'Function1' public method, which takes an Integer
        ' and returns a string.
        Dim myMethod As MethodBuilder = myTypeBuilder.DefineMethod("Function1", _
            MethodAttributes.Public Or MethodAttributes.Static, _
            GetType(String), New Type() { GetType(Integer) })

        ' 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.
        Dim myMethodIL As ILGenerator = myMethod.GetILGenerator()

        ' Create local variables named myString and myInt.
        Dim myLB1 As LocalBuilder = myMethodIL.DeclareLocal(GetType(String))
        myLB1.SetLocalSymInfo("myString")
        Console.WriteLine("local 'myString' type is: {0}", myLB1.LocalType)

        Dim myLB2 As LocalBuilder = myMethodIL.DeclareLocal(GetType(Integer))
        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.
        Dim myType1 As Type = 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.
        Dim myObject2 As Object = myType1.InvokeMember("Function1", _
            BindingFlags.InvokeMethod, Nothing, Nothing, New Object() { 42 })

        Console.WriteLine("Example.Function1 returned: {0}", myObject2)

   End Sub 
End Class 

' 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

Poznámky

Objekt lze definovat DeclareLocal pomocí metody. LocalBuilderA LocalBuilder object can be defined using the DeclareLocal method.

Vlastnosti

IsPinned

Získá hodnotu, která označuje, zda je objekt, na který odkazuje místní proměnná, připojen v paměti.Gets a value indicating whether the object referred to by the local variable is pinned in memory.

LocalIndex

Vrátí index založený na nule místní proměnné v těle metody.Gets the zero-based index of the local variable within the method body.

LocalType

Získá typ místní proměnné.Gets the type of the local variable.

Metody

Equals(Object)

Určuje, zda se zadaný objekt rovná aktuálnímu objektu.Determines whether the specified object is equal to the current object.

(Zděděno od Object)
GetHashCode()

Slouží jako výchozí funkce hash.Serves as the default hash function.

(Zděděno od Object)
GetType()

Type Získá aktuální instanci.Gets the Type of the current instance.

(Zděděno od Object)
MemberwiseClone()

Vytvoří kopii aktuálního Objectseznamu.Creates a shallow copy of the current Object.

(Zděděno od Object)
SetLocalSymInfo(String)

Nastaví název této místní proměnné.Sets the name of this local variable.

SetLocalSymInfo(String, Int32, Int32)

Nastaví název a lexikální rozsah této místní proměnné.Sets the name and lexical scope of this local variable.

ToString()

Vrací řetězec, který představuje aktuální objekt.Returns a string that represents the current object.

(Zděděno od Object)

Explicitní implementace rozhraní

_LocalBuilder.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

Mapuje sadu názvů na odpovídající sadu identifikátorů pro rozesílání.Maps a set of names to a corresponding set of dispatch identifiers.

_LocalBuilder.GetTypeInfo(UInt32, UInt32, IntPtr)

Načte informace o typu objektu, který lze použít k získání informací o typu pro rozhraní.Retrieves the type information for an object, which can then be used to get the type information for an interface.

_LocalBuilder.GetTypeInfoCount(UInt32)

Získá počet rozhraní typu informací, které objekt poskytuje (0 nebo 1).Retrieves the number of type information interfaces that an object provides (either 0 or 1).

_LocalBuilder.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Poskytuje přístup k vlastnostem a metodám vystaveným objektem.Provides access to properties and methods exposed by an object.

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