MethodBase.GetParameters Metode

Definisi

Ruang nama:

System.Reflection

Rakitan:

System.Runtime.dll

Sumber:

MethodBase.cs

Ketika ditimpa di kelas turunan, mendapatkan parameter metode atau konstruktor yang ditentukan.

public:
 abstract cli::array <System::Reflection::ParameterInfo ^> ^ GetParameters();

public abstract System.Reflection.ParameterInfo[] GetParameters ();

abstract member GetParameters : unit -> System.Reflection.ParameterInfo[]

Public MustOverride Function GetParameters () As ParameterInfo()

Mengembalikan

ParameterInfo[]

Array jenis ParameterInfo yang berisi informasi yang cocok dengan tanda tangan metode (atau konstruktor) yang tercermin oleh instans ini MethodBase .

Contoh

Contoh berikut menggunakan GetParameters metode untuk mengambil parameter Invoke metode delegasi.

Contoh mendefinisikan delegasi bernama MyDelegate dan peristiwa bernama ev jenis MyDelegate. Kode dalam Main metode menemukan tanda tangan peristiwa dengan mendapatkan jenis delegasi peristiwa, mendapatkan Invoke metode jenis delegasi, lalu mengambil dan menampilkan parameter.

// The following example uses instances of classes in
// the System::Reflection namespace to discover an event argument type.
using namespace System;
using namespace System::Reflection;

public delegate void MyDelegate( int i );
public ref class MainClass
{
public:
   event MyDelegate^ ev;
};

int main()
{
   Type^ delegateType = MainClass::typeid->GetEvent( "ev" )->EventHandlerType;
   MethodInfo^ invoke = delegateType->GetMethod( "Invoke" );
   array<ParameterInfo^>^pars = invoke->GetParameters();
   System::Collections::IEnumerator^ myEnum = pars->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      ParameterInfo^ p = safe_cast<ParameterInfo^>(myEnum->Current);
      Console::WriteLine( p->ParameterType );
   }
}
// The example displays the following output:
//       System.Int32

// The following example uses instances of classes in
// the System.Reflection namespace to discover an event argument type.
using System;
using System.Reflection;

public delegate void MyDelegate(int i);
public class MainClass
{
    public event MyDelegate ev;

    public static void Main()
    {
        Type delegateType = typeof(MainClass).GetEvent("ev").EventHandlerType;
        MethodInfo invoke = delegateType.GetMethod("Invoke");
        ParameterInfo[] pars = invoke.GetParameters();
        foreach (ParameterInfo p in pars)
        {
            Console.WriteLine(p.ParameterType);
        }
    }
}
// The example displays the following output:
//       System.Int32

Imports System.Reflection

Public Delegate Sub MyDelegate(ByVal i As Integer)

Public Class MainClass
    Public Event ev As MyDelegate

    Public Shared Sub Main()
        Dim delegateType As Type = GetType(MainClass).GetEvent("ev").EventHandlerType
        Dim invoke As MethodInfo = delegateType.GetMethod("Invoke")
        Dim pars As ParameterInfo() = invoke.GetParameters()
        For Each p As ParameterInfo In pars
            Console.WriteLine(p.ParameterType)
        Next 
    End Sub 
End Class 
' The example displays the following output:
'     System.Int32

Lihat juga

• ParameterInfo