ConstructorBuilder.GetParameters Método
Definição
Importante
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Retorna os parâmetros desse construtor.
public:
override cli::array <System::Reflection::ParameterInfo ^> ^ GetParameters();
public override System.Reflection.ParameterInfo[] GetParameters();
override this.GetParameters : unit -> System.Reflection.ParameterInfo[]
Public Overrides Function GetParameters () As ParameterInfo()
Retornos
Uma matriz que representa os parâmetros desse construtor.
Exceções
CreateType() não foi chamado no tipo desse construtor, nas versões do .NET Framework 1.0 e 1.1.
CreateType() não foi chamado no tipo desse construtor, no .NET Framework versão 2.0.
Exemplos
O exemplo de código ilustra o uso de GetParameters.
// Define a constructor of the dynamic class.
ConstructorBuilder myConstructorBuilder = myTypeBuilder.DefineConstructor(
MethodAttributes.Public, CallingConventions.Standard, myConstructorArgs);
// Get a reference to the module that contains this constructor.
Module myModule = myConstructorBuilder.GetModule();
Console.WriteLine("Module Name : " + myModule.Name);
// Get the 'MethodToken' that represents the token for this constructor.
MethodToken myMethodToken = myConstructorBuilder.GetToken();
Console.WriteLine("Constructor Token is : " + myMethodToken.Token);
// Get the method implementation flags for this constructor.
MethodImplAttributes myMethodImplAttributes = myConstructorBuilder.GetMethodImplementationFlags();
Console.WriteLine("MethodImplAttributes : " + myMethodImplAttributes);
// Generate IL for the method, call its base class constructor and store the arguments
// in the private field.
ILGenerator myILGenerator3 = myConstructorBuilder.GetILGenerator();
myILGenerator3.Emit(OpCodes.Ldarg_0);
ConstructorInfo myConstructorInfo = typeof(Object).GetConstructor(new Type[0]);
myILGenerator3.Emit(OpCodes.Call, myConstructorInfo);
myILGenerator3.Emit(OpCodes.Ldarg_0);
myILGenerator3.Emit(OpCodes.Ldarg_1);
myILGenerator3.Emit(OpCodes.Stfld, myGreetingField);
myILGenerator3.Emit(OpCodes.Ret);
// Add a method to the type.
myMethodBuilder = myTypeBuilder.DefineMethod
("HelloWorld",MethodAttributes.Public,null,null);
// Generate IL for the method.
ILGenerator myILGenerator2 = myMethodBuilder.GetILGenerator();
myILGenerator2.EmitWriteLine("Hello World from global");
myILGenerator2.Emit(OpCodes.Ret);
myModuleBuilder.CreateGlobalFunctions();
myType1 = myTypeBuilder.CreateType();
// Get the parameters of this constructor.
ParameterInfo[] myParameterInfo = myConstructorBuilder.GetParameters();
for(int i =0 ; i < myParameterInfo.Length; i++)
{
Console.WriteLine("Declaration type : " + myParameterInfo[i].Member.DeclaringType);
}
' Define a constructor of the dynamic class.
Dim myConstructorBuilder As ConstructorBuilder = _
myTypeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, _
myConstructorArgs)
' Get a reference to the module that contains this constructor.
Dim myModule As [Module] = myConstructorBuilder.GetModule()
Console.WriteLine("Module Name : " + myModule.Name)
' Get the 'MethodToken' that represents the token for this constructor.
Dim myMethodToken As MethodToken = myConstructorBuilder.GetToken()
Console.WriteLine("Constructor Token is : " + myMethodToken.Token.ToString())
' Get the method implementation flags for this constructor.
Dim myMethodImplAttributes As MethodImplAttributes = _
myConstructorBuilder.GetMethodImplementationFlags()
Console.WriteLine("MethodImplAttributes : " + myMethodImplAttributes.ToString())
' Generate IL for the method, call its base class constructor and store the arguments
' in the private field.
Dim myILGenerator3 As ILGenerator = myConstructorBuilder.GetILGenerator()
myILGenerator3.Emit(OpCodes.Ldarg_0)
Dim myConstructorInfo As ConstructorInfo = GetType(Object).GetConstructor(New Type() {})
myILGenerator3.Emit(OpCodes.Call, myConstructorInfo)
myILGenerator3.Emit(OpCodes.Ldarg_0)
myILGenerator3.Emit(OpCodes.Ldarg_1)
myILGenerator3.Emit(OpCodes.Stfld, myGreetingField)
myILGenerator3.Emit(OpCodes.Ret)
' Add a method to the type.
myMethodBuilder = _
myTypeBuilder.DefineMethod("HelloWorld", MethodAttributes.Public, Nothing, Nothing)
' Generate IL for the method.
Dim myILGenerator2 As ILGenerator = myMethodBuilder.GetILGenerator()
myILGenerator2.EmitWriteLine("Hello World from global")
myILGenerator2.Emit(OpCodes.Ret)
myModuleBuilder.CreateGlobalFunctions()
myType1 = myTypeBuilder.CreateType()
' Get the parameters of this constructor.
Dim myParameterInfo As ParameterInfo() = myConstructorBuilder.GetParameters()
Dim i As Integer
For i = 0 To myParameterInfo.Length - 1
Console.WriteLine _
("Declaration type : " + myParameterInfo(i).Member.DeclaringType.ToString())
Next i
Comentários
Essa propriedade não tem suporte até que o TypeBuilder.CreateType método tenha sido chamado. No .NET Framework versões 1.0 e 1.1, InvalidOperationException é gerado. No .NET Framework versão 2.0, NotSupportedException é gerado.