ConstructorBuilder.SetImplementationFlags(MethodImplAttributes) Method

Definition

Namespace:

System.Reflection.Emit

Assembly:

System.Reflection.Emit.dll

Source:

ConstructorBuilder.cs

Sets the method implementation flags for this constructor.

public:
 void SetImplementationFlags(System::Reflection::MethodImplAttributes attributes);

public void SetImplementationFlags (System.Reflection.MethodImplAttributes attributes);

member this.SetImplementationFlags : System.Reflection.MethodImplAttributes -> unit

Public Sub SetImplementationFlags (attributes As MethodImplAttributes)

Parameters

attributes

MethodImplAttributes

The method implementation flags.

Exceptions

InvalidOperationException

The containing type has been created using CreateType().

Remarks

The following code sample illustrates the use of SetImplementationFlags.

MethodBuilder^ myMethodBuilder = nullptr;
AppDomain^ myCurrentDomain = AppDomain::CurrentDomain;

// Create assembly in current CurrentDomain.
AssemblyName^ myAssemblyName = gcnew AssemblyName;
myAssemblyName->Name = "TempAssembly";

// Create a dynamic assembly.
myAssemblyBuilder = myCurrentDomain->DefineDynamicAssembly( myAssemblyName, AssemblyBuilderAccess::Run );

// Create a dynamic module in the assembly.
myModuleBuilder = myAssemblyBuilder->DefineDynamicModule( "TempModule", true );
FieldInfo^ myFieldInfo2 = myModuleBuilder->DefineUninitializedData( "myField", 2, FieldAttributes::Public );

// Create a type in the module.
TypeBuilder^ myTypeBuilder = myModuleBuilder->DefineType( "TempClass", TypeAttributes::Public );
FieldBuilder^ myGreetingField = myTypeBuilder->DefineField( "Greeting", String::typeid, FieldAttributes::Public );
array<Type^>^myConstructorArgs = {String::typeid};

// Define a constructor of the dynamic class.
ConstructorBuilder^ myConstructor = myTypeBuilder->DefineConstructor( MethodAttributes::Public, CallingConventions::Standard, myConstructorArgs );

// Set the method implementation flags for the constructor.
myConstructor->SetImplementationFlags( static_cast<MethodImplAttributes>(MethodImplAttributes::PreserveSig | MethodImplAttributes::Runtime) );

// Get the method implementation flags for the constructor.
MethodImplAttributes myMethodAttributes = myConstructor->GetMethodImplementationFlags();
Type^ myAttributeType = MethodImplAttributes::typeid;
int myAttribValue = (int)myMethodAttributes;
if (  !myAttributeType->IsEnum )
{
   Console::WriteLine( "This is not an Enum" );
}

// Display the field info names of the retrieved method implementation flags.
array<FieldInfo^>^myFieldInfo = myAttributeType->GetFields( static_cast<BindingFlags>(BindingFlags::Public | BindingFlags::Static) );
Console::WriteLine( "The Field info names of the MethodImplAttributes for the constructor are:" );
for ( int i = 0; i < myFieldInfo->Length; i++ )
{
   int myFieldValue =  *safe_cast<Int32^>(myFieldInfo[ i ]->GetValue( nullptr ));
   if ( (myFieldValue & myAttribValue) == myFieldValue )
   {
      Console::WriteLine( " {0}", myFieldInfo[ i ]->Name );
   }
}

MethodBuilder myMethodBuilder = null;
AppDomain myCurrentDomain = AppDomain.CurrentDomain;
// Create assembly in current CurrentDomain.
AssemblyName myAssemblyName = new AssemblyName();
myAssemblyName.Name = "TempAssembly";
// Create a dynamic assembly.
myAssemblyBuilder = myCurrentDomain.DefineDynamicAssembly
   (myAssemblyName, AssemblyBuilderAccess.Run);
// Create a dynamic module in the assembly.
myModuleBuilder = myAssemblyBuilder.DefineDynamicModule("TempModule", true);
FieldInfo myFieldInfo2 =
   myModuleBuilder.DefineUninitializedData("myField", 2, FieldAttributes.Public);
// Create a type in the module.
TypeBuilder myTypeBuilder = myModuleBuilder.DefineType("TempClass",TypeAttributes.Public);
FieldBuilder myGreetingField = myTypeBuilder.DefineField("Greeting",
   typeof(String), FieldAttributes.Public);
Type[] myConstructorArgs = { typeof(String) };
// Define a constructor of the dynamic class.
ConstructorBuilder myConstructor = myTypeBuilder.DefineConstructor(
   MethodAttributes.Public, CallingConventions.Standard, myConstructorArgs);
// Set the method implementation flags for the constructor.
myConstructor.SetImplementationFlags(MethodImplAttributes.PreserveSig | MethodImplAttributes.Runtime);
// Get the method implementation flags for the constructor.
MethodImplAttributes myMethodAttributes = myConstructor.GetMethodImplementationFlags();
Type myAttributeType = typeof(MethodImplAttributes);
int myAttribValue = (int) myMethodAttributes;
if(! myAttributeType.IsEnum)
{
   Console.WriteLine("This is not an Enum");
}
// Display the field info names of the retrieved method implementation flags.
FieldInfo[] myFieldInfo = myAttributeType.GetFields(BindingFlags.Public | BindingFlags.Static);
Console.WriteLine("The Field info names of the MethodImplAttributes for the constructor are:");
for (int i = 0; i < myFieldInfo.Length; i++)
{
   int myFieldValue = (Int32)myFieldInfo[i].GetValue(null);
   if ((myFieldValue & myAttribValue) == myFieldValue)
   {
      Console.WriteLine("   " + myFieldInfo[i].Name);
   }
}

Dim myMethodBuilder As MethodBuilder = Nothing
Dim myCurrentDomain As AppDomain = AppDomain.CurrentDomain
' Create assembly in current CurrentDomain.
Dim myAssemblyName As New AssemblyName()
myAssemblyName.Name = "TempAssembly"
' Create a dynamic assembly.
myAssemblyBuilder = myCurrentDomain.DefineDynamicAssembly _
                                      (myAssemblyName, AssemblyBuilderAccess.Run)
' Create a dynamic module in the assembly.
myModuleBuilder = myAssemblyBuilder.DefineDynamicModule("TempModule", True)
Dim myFieldInfo2 As FieldInfo = myModuleBuilder.DefineUninitializedData _
                                      ("myField", 2, FieldAttributes.Public)
' Create a type in the module.
Dim myTypeBuilder As TypeBuilder = myModuleBuilder.DefineType _
                                            ("TempClass", TypeAttributes.Public)
Dim myGreetingField As FieldBuilder = myTypeBuilder.DefineField _
                                 ("Greeting", GetType(String), FieldAttributes.Public)
Dim myConstructorArgs As Type() = {GetType(String)}
' Define a constructor of the dynamic class.
Dim myConstructor As ConstructorBuilder = myTypeBuilder.DefineConstructor _
                  (MethodAttributes.Public, CallingConventions.Standard, myConstructorArgs)
' Set the method implementation flags for the constructor.
myConstructor.SetImplementationFlags(MethodImplAttributes.PreserveSig Or _
                                     MethodImplAttributes.Runtime)
' Get the method implementation flags for the constructor.
Dim myMethodAttributes As MethodImplAttributes = myConstructor.GetMethodImplementationFlags()
Dim myAttributeType As Type = GetType(MethodImplAttributes)
Dim myAttribValue As Integer = CInt(myMethodAttributes)
If Not myAttributeType.IsEnum Then
   Console.WriteLine("This is not an Enum")
End If
' Display the field info names of the retrieved method implementation flags.
Dim myFieldInfo As FieldInfo() = myAttributeType.GetFields(BindingFlags.Public Or _
                                                           BindingFlags.Static)
Console.WriteLine("The Field info names of the MethodImplAttributes for the constructor are:")
Dim i As Integer
For i = 0 To myFieldInfo.Length - 1
   Dim myFieldValue As Integer = CType(myFieldInfo(i).GetValue(Nothing), Int32)
   If(myFieldValue And myAttribValue) = myFieldValue Then
      Console.WriteLine("   " + myFieldInfo(i).Name)
   End If
Next i