MethodBuilder.SetImplementationFlags(MethodImplAttributes) 方法

定义

命名空间:

System.Reflection.Emit

程序集:

System.Reflection.Emit.dll

Source:

MethodBuilder.cs

为此方法设置实现标志。

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)

参数

attributes

MethodImplAttributes

要设置的实现标志。

例外

InvalidOperationException

该包含类型是以前使用 CreateType() 创建的。

- 或 -

对于当前的方法，属性 IsGenericMethod 为 true，但属性 IsGenericMethodDefinition 为 false。

示例

下面的代码示例演示了方法在 SetImplementationFlags 上下文中使用 来描述方法主体中 MSIL 的实现。

array<Type^>^ temp0 = { int::typeid, int::typeid };
MethodBuilder^ myMthdBuilder = myTypeBuilder->DefineMethod( "MyMethod",
                               MethodAttributes::Public,
                               CallingConventions::HasThis,
                               int::typeid,
                               temp0 );

// Specifies that the dynamic method declared above has a an MSIL implementation,
// is managed, synchronized (single-threaded) through the body, and that it
// cannot be inlined.

myMthdBuilder->SetImplementationFlags( (MethodImplAttributes)(
                                        MethodImplAttributes::IL |
                                        MethodImplAttributes::Managed |
                                        MethodImplAttributes::Synchronized |
                                        MethodImplAttributes::NoInlining) );

// Create an ILGenerator for the MethodBuilder and emit MSIL here ...

MethodBuilder myMthdBuilder = myTypeBuilder.DefineMethod("MyMethod",
                    MethodAttributes.Public,
                    CallingConventions.HasThis,
                    typeof(int),
                    new Type[] { typeof(int),
                             typeof(int) });	

// Specifies that the dynamic method declared above has a an MSIL implementation,
    // is managed, synchronized (single-threaded) through the body, and that it
// cannot be inlined.

myMthdBuilder.SetImplementationFlags(MethodImplAttributes.IL |
                     MethodImplAttributes.Managed |
                     MethodImplAttributes.Synchronized |
                     MethodImplAttributes.NoInlining);

// Create an ILGenerator for the MethodBuilder and emit MSIL here ...

Dim myMthdBuilder As MethodBuilder = myTypeBuilder.DefineMethod("MyMethod", _
                 MethodAttributes.Public, _
                 CallingConventions.HasThis, _
                 GetType(Integer), _
                 New Type() {GetType(Integer), GetType(Integer)})

' Specifies that the dynamic method declared above has a an MSIL implementation,
' is managed, synchronized (single-threaded) through the body, and that it 
' cannot be inlined.

myMthdBuilder.SetImplementationFlags((MethodImplAttributes.IL Or _
                  MethodImplAttributes.Managed Or _
                  MethodImplAttributes.Synchronized Or _
                  MethodImplAttributes.NoInlining))

' Create an ILGenerator for the MethodBuilder and emit MSIL here ...

注解

SetImplementationFlags将 方法与 SetCustomAttribute 方法结合使用时，请注意潜在的交互。 例如，使用 SetCustomAttribute 方法添加 DllImportAttribute 属性也会设置 MethodImplAttributes.PreserveSig 标志。 如果随后调用 SetImplementationFlags 方法，则会 PreserveSig 覆盖 标志。 可通过两种方式来避免此问题：

• 在 SetImplementationFlags 调用 方法之前调用 SetCustomAttribute 方法。 方法 SetCustomAttribute 始终遵循现有的方法实现标志。

• 设置实现标志时，请调用 GetMethodImplementationFlags 方法来检索现有标志，使用按位 OR 添加标志，然后调用 SetImplementationFlags 方法。