ParameterBuilder Sınıf

Tanım

Parametre bilgilerini oluşturur veya ilişkilendirir.

public ref class ParameterBuilder
public ref class ParameterBuilder abstract
public ref class ParameterBuilder : System::Runtime::InteropServices::_ParameterBuilder
public class ParameterBuilder
public abstract class ParameterBuilder
[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]
public class ParameterBuilder : System.Runtime.InteropServices._ParameterBuilder
[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]
[System.Runtime.InteropServices.ComVisible(true)]
public class ParameterBuilder : System.Runtime.InteropServices._ParameterBuilder
type ParameterBuilder = class
[<System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)>]
type ParameterBuilder = class
    interface _ParameterBuilder
[<System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type ParameterBuilder = class
    interface _ParameterBuilder
Public Class ParameterBuilder
Public MustInherit Class ParameterBuilder
Public Class ParameterBuilder
Implements _ParameterBuilder
Devralma
ParameterBuilder
Öznitelikler
Uygulamalar

Örnekler

Aşağıdaki örnekte kullanılarak ParameterBuilderbaşvuru ile geçirilen bir parametre ile dinamik yöntem oluşturma gösterilmektedir.

using namespace System;
using namespace System::Threading;
using namespace System::Reflection;
using namespace System::Reflection::Emit;
Type^ BuildCustomerDataType()
{
   AppDomain^ myDomain = Thread::GetDomain();
   AssemblyName^ myAsmName = gcnew AssemblyName;
   myAsmName->Name = "MyDynamicAssembly";
   AssemblyBuilder^ myAsmBuilder = myDomain->DefineDynamicAssembly( myAsmName, AssemblyBuilderAccess::Run );
   ModuleBuilder^ myModBuilder = myAsmBuilder->DefineDynamicModule( "MyMod" );
   TypeBuilder^ myTypeBuilder = myModBuilder->DefineType( "CustomerData", TypeAttributes::Public );
   FieldBuilder^ customerNameBldr = myTypeBuilder->DefineField( "customerName", String::typeid, FieldAttributes::Private );
   FieldBuilder^ acctIDBldr = myTypeBuilder->DefineField( "acctID", String::typeid, FieldAttributes::Private );
   FieldBuilder^ balanceAmtBldr = myTypeBuilder->DefineField( "balanceAmt", double::typeid, FieldAttributes::Private );
   array<Type^>^temp0 = {String::typeid,String::typeid,double::typeid};
   ConstructorBuilder^ myCtorBuilder = myTypeBuilder->DefineConstructor( MethodAttributes::Public, CallingConventions::HasThis, temp0 );
   ILGenerator^ ctorIL = myCtorBuilder->GetILGenerator();
   Type^ objType = Type::GetType( "System.Object" );
   ConstructorInfo^ objCtor = objType->GetConstructor( gcnew array<Type^>(0) );
   ctorIL->Emit( OpCodes::Ldarg_0 );
   ctorIL->Emit( OpCodes::Call, objCtor );
   ctorIL->Emit( OpCodes::Ldarg_0 );
   ctorIL->Emit( OpCodes::Ldarg_1 );
   ctorIL->Emit( OpCodes::Stfld, customerNameBldr );
   ctorIL->Emit( OpCodes::Ldarg_0 );
   ctorIL->Emit( OpCodes::Ldarg_2 );
   ctorIL->Emit( OpCodes::Stfld, acctIDBldr );
   ctorIL->Emit( OpCodes::Ldarg_0 );
   ctorIL->Emit( OpCodes::Ldarg_3 );
   ctorIL->Emit( OpCodes::Stfld, balanceAmtBldr );
   ctorIL->Emit( OpCodes::Ret );
   
   // This method will take an amount from a static pool and add it to the balance.
   // Note that we are passing the first parameter, fundsPool, by reference. Therefore,
   // we need to inform the MethodBuilder to expect a ref, by declaring the first
   // parameter's type to be System::Double& (a reference to a double).
   array<Type^>^temp4 = {Type::GetType( "System.Double&" ),double::typeid};
   MethodBuilder^ myMthdBuilder = myTypeBuilder->DefineMethod( "AddFundsFromPool", MethodAttributes::Public, double::typeid, temp4 );
   ParameterBuilder^ poolRefBuilder = myMthdBuilder->DefineParameter( 1, ParameterAttributes::Out, "fundsPool" );
   ParameterBuilder^ amountFromPoolBuilder = myMthdBuilder->DefineParameter( 2, ParameterAttributes::In, "amountFromPool" );
   ILGenerator^ mthdIL = myMthdBuilder->GetILGenerator();
   mthdIL->Emit( OpCodes::Ldarg_1 );
   mthdIL->Emit( OpCodes::Ldarg_1 );
   mthdIL->Emit( OpCodes::Ldind_R8 );
   mthdIL->Emit( OpCodes::Ldarg_2 );
   mthdIL->Emit( OpCodes::Sub );
   mthdIL->Emit( OpCodes::Stind_R8 );
   mthdIL->Emit( OpCodes::Ldarg_0 );
   mthdIL->Emit( OpCodes::Ldarg_0 );
   mthdIL->Emit( OpCodes::Ldfld, balanceAmtBldr );
   mthdIL->Emit( OpCodes::Ldarg_2 );
   mthdIL->Emit( OpCodes::Add );
   mthdIL->Emit( OpCodes::Stfld, balanceAmtBldr );
   mthdIL->Emit( OpCodes::Ldarg_0 );
   mthdIL->Emit( OpCodes::Ldfld, balanceAmtBldr );
   mthdIL->Emit( OpCodes::Ret );
   return myTypeBuilder->CreateType();
}

int main()
{
   Type^ custType = nullptr;
   Object^ custObj = nullptr;
   array<Type^>^custArgTypes = {String::typeid,String::typeid,double::typeid};
   
   // Call the method to build our dynamic class.
   custType = BuildCustomerDataType();
   Console::WriteLine( "---" );
   ConstructorInfo^ myCustCtor = custType->GetConstructor( custArgTypes );
   double initialBalance = 100.00;
   array<Object^>^temp5 = {"Joe Consumer","5678-XYZ",initialBalance};
   custObj = myCustCtor->Invoke( temp5 );
   array<MemberInfo^>^myMemberInfo = custType->GetMember( "AddFundsFromPool" );
   double thePool = 1000.00;
   Console::WriteLine( "The pool is currently ${0}", thePool );
   Console::WriteLine( "The original balance of the account instance is ${0}", initialBalance );
   double amountFromPool = 50.00;
   Console::WriteLine( "The amount to be subtracted from the pool and added to the account is ${0}", amountFromPool );
   Console::WriteLine( "---" );
   Console::WriteLine( "Calling {0} ...", myMemberInfo[ 0 ] );
   Console::WriteLine( "---" );
   array<Object^>^passMe = {thePool,amountFromPool};
   Console::WriteLine( "The new balance in the account instance is ${0}", custType->InvokeMember( "AddFundsFromPool", BindingFlags::InvokeMethod, nullptr, custObj, passMe ) );
   thePool = safe_cast<double>(passMe[ 0 ]);
   Console::WriteLine( "The new amount in the pool is ${0}", thePool );
}

using System;
using System.Threading;
using System.Reflection;
using System.Reflection.Emit;

class ParamBuilderDemo

{

   public static Type BuildCustomerDataType()
   {

    AppDomain myDomain = Thread.GetDomain();
    AssemblyName myAsmName = new AssemblyName();
    myAsmName.Name = "MyDynamicAssembly";

    AssemblyBuilder myAsmBuilder = myDomain.DefineDynamicAssembly(myAsmName,
                        AssemblyBuilderAccess.Run);

    ModuleBuilder myModBuilder = myAsmBuilder.DefineDynamicModule("MyMod");

    TypeBuilder myTypeBuilder = myModBuilder.DefineType("CustomerData",
                        TypeAttributes.Public);

    FieldBuilder customerNameBldr = myTypeBuilder.DefineField("customerName",
                            typeof(string),
                            FieldAttributes.Private);
    FieldBuilder acctIDBldr = myTypeBuilder.DefineField("acctID",
                            typeof(string),
                            FieldAttributes.Private);
    FieldBuilder balanceAmtBldr = myTypeBuilder.DefineField("balanceAmt",
                            typeof(double),
                            FieldAttributes.Private);
                                
    ConstructorBuilder myCtorBuilder = myTypeBuilder.DefineConstructor(
                            MethodAttributes.Public,
                            CallingConventions.HasThis,
                            new Type[] { typeof(string),
                                     typeof(string),
                                     typeof(double) });

    ILGenerator ctorIL = myCtorBuilder.GetILGenerator();

    Type objType = Type.GetType("System.Object");
        ConstructorInfo objCtor = objType.GetConstructor(new Type[] {});

    ctorIL.Emit(OpCodes.Ldarg_0);
    ctorIL.Emit(OpCodes.Call, objCtor);

    ctorIL.Emit(OpCodes.Ldarg_0);
    ctorIL.Emit(OpCodes.Ldarg_1);
    ctorIL.Emit(OpCodes.Stfld, customerNameBldr);

    ctorIL.Emit(OpCodes.Ldarg_0);
    ctorIL.Emit(OpCodes.Ldarg_2);
    ctorIL.Emit(OpCodes.Stfld, acctIDBldr);

    ctorIL.Emit(OpCodes.Ldarg_0);
    ctorIL.Emit(OpCodes.Ldarg_3);
    ctorIL.Emit(OpCodes.Stfld, balanceAmtBldr);

    ctorIL.Emit(OpCodes.Ret);

    // This method will take an amount from a static pool and add it to the balance.

    // Note that we are passing the first parameter, fundsPool, by reference. Therefore,
    // we need to inform the MethodBuilder to expect a ref, by declaring the first
    // parameter's type to be System.Double& (a reference to a double).

    MethodBuilder myMthdBuilder = myTypeBuilder.DefineMethod("AddFundsFromPool",
                        MethodAttributes.Public,
                        typeof(double),
                        new Type[] { Type.GetType("System.Double&"),
                                 typeof(double) });

    ParameterBuilder poolRefBuilder = myMthdBuilder.DefineParameter(1,
                        ParameterAttributes.Out,
                        "fundsPool");

    ParameterBuilder amountFromPoolBuilder = myMthdBuilder.DefineParameter(2,
                        ParameterAttributes.In,
                            "amountFromPool");

    ILGenerator mthdIL = myMthdBuilder.GetILGenerator();

    mthdIL.Emit(OpCodes.Ldarg_1);
    mthdIL.Emit(OpCodes.Ldarg_1);
    mthdIL.Emit(OpCodes.Ldind_R8);
    mthdIL.Emit(OpCodes.Ldarg_2);
    mthdIL.Emit(OpCodes.Sub);

    mthdIL.Emit(OpCodes.Stind_R8);

    mthdIL.Emit(OpCodes.Ldarg_0);
    mthdIL.Emit(OpCodes.Ldarg_0);
    mthdIL.Emit(OpCodes.Ldfld, balanceAmtBldr);
    mthdIL.Emit(OpCodes.Ldarg_2);
    mthdIL.Emit(OpCodes.Add);

    mthdIL.Emit(OpCodes.Stfld, balanceAmtBldr);

    mthdIL.Emit(OpCodes.Ldarg_0);
    mthdIL.Emit(OpCodes.Ldfld, balanceAmtBldr);
    mthdIL.Emit(OpCodes.Ret);

    return myTypeBuilder.CreateType();
   }

   public static void Main()
   {
    Type custType = null;
    object custObj = null;

    Type[] custArgTypes = new Type[] {typeof(string), typeof(string), typeof(double)};
    
    // Call the method to build our dynamic class.

    custType = BuildCustomerDataType();

    Console.WriteLine("---");

    ConstructorInfo myCustCtor = custType.GetConstructor(custArgTypes);
    double initialBalance = 100.00;
    custObj = myCustCtor.Invoke(new object[] { "Joe Consumer",
                           "5678-XYZ",
                           initialBalance });

    MemberInfo[] myMemberInfo = custType.GetMember("AddFundsFromPool");

    double thePool = 1000.00;
    Console.WriteLine("The pool is currently ${0}", thePool);
    Console.WriteLine("The original balance of the account instance is ${0}",
                            initialBalance);

    double amountFromPool = 50.00;
    Console.WriteLine("The amount to be subtracted from the pool and added " +
              "to the account is ${0}", amountFromPool);
    
    Console.WriteLine("---");
    Console.WriteLine("Calling {0} ...", myMemberInfo[0].ToString());
    Console.WriteLine("---");

    object[] passMe = new object[] { thePool, amountFromPool };
    Console.WriteLine("The new balance in the account instance is ${0}",
                    custType.InvokeMember("AddFundsFromPool",
                    BindingFlags.InvokeMethod,
                    null, custObj, passMe));
    thePool = (double)passMe[0];
    Console.WriteLine("The new amount in the pool is ${0}", thePool);
   }
}

Imports System.Threading
Imports System.Reflection
Imports System.Reflection.Emit

 _

Class ParamBuilderDemo
   
   Public Shared Function BuildCustomerDataType() As Type
      
      Dim myDomain As AppDomain = Thread.GetDomain()
      Dim myAsmName As New AssemblyName()
      myAsmName.Name = "MyDynamicAssembly"
      
      Dim myAsmBuilder As AssemblyBuilder = myDomain.DefineDynamicAssembly(myAsmName, _
                        AssemblyBuilderAccess.Run)
      
      Dim myModBuilder As ModuleBuilder = myAsmBuilder.DefineDynamicModule("MyMod")
      
      Dim myTypeBuilder As TypeBuilder = myModBuilder.DefineType("CustomerData", TypeAttributes.Public)
      
      Dim customerNameBldr As FieldBuilder = myTypeBuilder.DefineField("customerName", _
                                GetType(String), _
                                FieldAttributes.Private)
      Dim acctIDBldr As FieldBuilder = myTypeBuilder.DefineField("acctID", _
                                GetType(String), _
                                FieldAttributes.Private)
      Dim balanceAmtBldr As FieldBuilder = myTypeBuilder.DefineField("balanceAmt", _
                                GetType(Double), _
                                FieldAttributes.Private)
      
      Dim myCtorBuilder As ConstructorBuilder = myTypeBuilder.DefineConstructor(MethodAttributes.Public, _
                                CallingConventions.HasThis, _
                                New Type() {GetType(String), _
                                        GetType(String), _
                                        GetType(Double)})
      
      
      Dim ctorIL As ILGenerator = myCtorBuilder.GetILGenerator()
      
      Dim objType As Type = Type.GetType("System.Object")
      Dim objCtor As ConstructorInfo = objType.GetConstructor(New Type(){})
      
      ctorIL.Emit(OpCodes.Ldarg_0)
      ctorIL.Emit(OpCodes.Call, objCtor)
      
      ctorIL.Emit(OpCodes.Ldarg_0)
      ctorIL.Emit(OpCodes.Ldarg_1)
      ctorIL.Emit(OpCodes.Stfld, customerNameBldr)
      
      ctorIL.Emit(OpCodes.Ldarg_0)
      ctorIL.Emit(OpCodes.Ldarg_2)
      ctorIL.Emit(OpCodes.Stfld, acctIDBldr)
      
      ctorIL.Emit(OpCodes.Ldarg_0)
      ctorIL.Emit(OpCodes.Ldarg_3)
      ctorIL.Emit(OpCodes.Stfld, balanceAmtBldr)
      
      ctorIL.Emit(OpCodes.Ret)
      
      ' This method will take an amount from a static pool and add it to the balance.
      ' Note that we are passing the first parameter, fundsPool, by reference. Therefore,
      ' we need to inform the MethodBuilder to expect a ref, by declaring the first
      ' parameter's type to be System.Double& (a reference to a double).

      Dim myMthdBuilder As MethodBuilder = myTypeBuilder.DefineMethod("AddFundsFromPool", _
                                MethodAttributes.Public, _
                                GetType(Double), _
                                New Type() {Type.GetType("System.Double&"), _
                                         GetType(Double)})
      
      Dim poolRefBuilder As ParameterBuilder = myMthdBuilder.DefineParameter(1, _
                            ParameterAttributes.Out, "fundsPool")
      
      Dim amountFromPoolBuilder As ParameterBuilder = myMthdBuilder.DefineParameter(2, _
                            ParameterAttributes.In, "amountFromPool")
      
      Dim mthdIL As ILGenerator = myMthdBuilder.GetILGenerator()
      
      mthdIL.Emit(OpCodes.Ldarg_1)
      mthdIL.Emit(OpCodes.Ldarg_1)
      mthdIL.Emit(OpCodes.Ldind_R8)
      mthdIL.Emit(OpCodes.Ldarg_2)
      mthdIL.Emit(OpCodes.Sub)
      
      mthdIL.Emit(OpCodes.Stind_R8)
      
      mthdIL.Emit(OpCodes.Ldarg_0)
      mthdIL.Emit(OpCodes.Ldarg_0)
      mthdIL.Emit(OpCodes.Ldfld, balanceAmtBldr)
      mthdIL.Emit(OpCodes.Ldarg_2)
      mthdIL.Emit(OpCodes.Add)
      
      mthdIL.Emit(OpCodes.Stfld, balanceAmtBldr)
      
      mthdIL.Emit(OpCodes.Ldarg_0)
      mthdIL.Emit(OpCodes.Ldfld, balanceAmtBldr)
      mthdIL.Emit(OpCodes.Ret)
      
      Return myTypeBuilder.CreateType()

   End Function 'BuildCustomerDataType
    
   
   Public Shared Sub Main()

      Dim custType As Type = Nothing
      Dim custObj As Object = Nothing
      
      Dim custArgTypes() As Type = {GetType(String), GetType(String), GetType(Double)}
      
      ' Call the method to build our dynamic class.
      custType = BuildCustomerDataType()
      
      Console.WriteLine("---")
      
      Dim myCustCtor As ConstructorInfo = custType.GetConstructor(custArgTypes)
      Dim initialBalance As Double = 100.0
      custObj = myCustCtor.Invoke(New Object() {"Joe Consumer", "5678-XYZ", initialBalance})
      
      Dim myMemberInfo As MemberInfo() = custType.GetMember("AddFundsFromPool")
      
      
      Dim thePool As Double = 1000.0
      Console.WriteLine("The pool is currently ${0}", thePool)
      Console.WriteLine("The original balance of the account instance is ${0}", initialBalance)
      
      Dim amountFromPool As Double = 50.0
      Console.WriteLine("The amount to be subtracted from the pool and added " & _
            "to the account is ${0}", amountFromPool)
      
      Console.WriteLine("---")
      Console.WriteLine("Calling {0} ...", myMemberInfo(0).ToString())
      Console.WriteLine("---")
      
      Dim passMe() As Object = {thePool, amountFromPool}
      Console.WriteLine("The new balance in the account instance is ${0}", _
                custType.InvokeMember("AddFundsFromPool", _
                BindingFlags.InvokeMethod, Nothing, custObj, passMe))
      thePool = CDbl(passMe(0))
      Console.WriteLine("The new amount in the pool is ${0}", thePool)

   End Sub

End Class

Açıklamalar

Parametre özniteliklerinin yöntem imzası ile tutarlı olması gerekir. Bir parametrenin özniteliklerini belirtirseniz Out , bu yöntem parametresinin türünün bir ByRef tür olduğundan emin olmanız gerekir.

Bazı ParameterBuilder öznitelikler, Microsoft ara dilinin (MSIL) çalışma zamanında düzgün çalışması için uygun parametrelerle çağırmanızı DefineMethod gerektirir. Örneğin, bir ParameterBuilder parametresinin 1. parametresi için parameterAttributes.Out ile bir tanımlarsanız, parametre 1'i MethodBuilderMethodBuilder Type.GetType("System.String&") yerine Type.GetType("System.String") gibi bir başvuru olmalıdır.

Oluşturucular

ParameterBuilder()

ParameterBuilder sınıfının yeni bir örneğini başlatır.

Özellikler

Attributes

Bu parametrenin özniteliklerini alır.

IsIn

Bunun bir giriş parametresi olup olmadığını alır.

IsOptional

Bu parametrenin isteğe bağlı olup olmadığını alır.

IsOut

Bu parametrenin bir çıkış parametresi olup olmadığını alır.

Name

Bu parametrenin adını alır.

Position

Bu parametre için imza konumunu alır.

Yöntemler

Equals(Object)

Belirtilen nesnenin geçerli nesneye eşit olup olmadığını belirler.

(Devralındığı yer: Object)
GetHashCode()

Varsayılan karma işlevi işlevi görür.

(Devralındığı yer: Object)
GetToken()

Bu parametre için belirteci alır.

GetType()

Type Geçerli örneğini alır.

(Devralındığı yer: Object)
MemberwiseClone()

Geçerli Objectöğesinin sığ bir kopyasını oluşturur.

(Devralındığı yer: Object)
SetConstant(Object)

parametresinin varsayılan değerini ayarlar.

SetCustomAttribute(ConstructorInfo, Byte[])

Belirtilen özel öznitelik blobu kullanarak özel bir öznitelik ayarlayın.

SetCustomAttribute(CustomAttributeBuilder)

Özel öznitelik oluşturucu kullanarak özel bir öznitelik ayarlayın.

SetCustomAttributeCore(ConstructorInfo, ReadOnlySpan<Byte>)

Türetilmiş bir sınıfta geçersiz kılındığında, bu derlemede özel bir öznitelik ayarlar.

SetMarshal(UnmanagedMarshal)
Geçersiz.

Bu parametre için hazırlamayı belirtir.

ToString()

Geçerli nesneyi temsil eden dizeyi döndürür.

(Devralındığı yer: Object)

Belirtik Arabirim Kullanımları

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

Bir ad kümesini karşılık gelen bir dağıtma tanımlayıcısı kümesine eşler.

_ParameterBuilder.GetTypeInfo(UInt32, UInt32, IntPtr)

Bir nesne için tür bilgilerini alır ve bu da bir arabirimin tür bilgisini almak için kullanılabilir.

_ParameterBuilder.GetTypeInfoCount(UInt32)

Bir nesnenin sağladığı tür bilgisi arabirimlerinin sayısını alır (0 ya da 1).

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

Bir nesne tarafından sunulan özelliklere ve yöntemlere erişim sağlar.

Şunlara uygulanır