PropertyInfo.GetIndexParameters PropertyInfo.GetIndexParameters PropertyInfo.GetIndexParameters PropertyInfo.GetIndexParameters Method

정의

파생 클래스에 재정의할 때 속성에 대한 모든 인덱스 매개 변수의 배열을 반환합니다.When overridden in a derived class, returns an array of all the index parameters for the property.

public:
 abstract cli::array <System::Reflection::ParameterInfo ^> ^ GetIndexParameters();
public abstract System.Reflection.ParameterInfo[] GetIndexParameters ();
abstract member GetIndexParameters : unit -> System.Reflection.ParameterInfo[]
Public MustOverride Function GetIndexParameters () As ParameterInfo()

반환

인덱스에 대한 매개 변수가 들어 있는 ParameterInfo 형식의 배열입니다.An array of type ParameterInfo containing the parameters for the indexes. 속성이 인덱싱되지 않은 경우 배열에는 요소가 없습니다.If the property is not indexed, the array has 0 (zero) elements.

구현

예제

다음 예제에서는 지정된 된 속성의 인덱스 매개 변수를 표시합니다.The following example displays the index parameters of the specified property.

using namespace System;
using namespace System::Reflection;

// A class that contains some properties.
public ref class MyProperty
{
private:

   // Define a simple string property.
   String^ caption;

public:

   property String^ Caption 
   {
      String^ get()
      {
         return caption;
      }

      void set( String^ value )
      {
         if ( caption != value )
         {
            caption = value;
         }
      }

   }

private:

   // A very limited indexer that gets or sets one of four 
   // strings.
   array<String^>^strings;

public:
   MyProperty()
   {
      array<String^>^temp0 = {"abc","def","ghi","jkl"};
      strings = temp0;
   }


   property String^ Item [int]
   {
      String^ get( int Index )
      {
         return strings[ Index ];
      }

      void set( int Index, String^ value )
      {
         strings[ Index ] = value;
      }

   }

};

int main()
{
   
   // Get the type and PropertyInfo.
   Type^ t = Type::GetType( "MyProperty" );
   PropertyInfo^ pi = t->GetProperty( "Caption" );
   
   // Get the public GetIndexParameters method.
   array<ParameterInfo^>^parms = pi->GetIndexParameters();
   Console::WriteLine( "\n{0}.{1} has {2} parameters.", t->FullName, pi->Name, parms->GetLength( 0 ) );
   
   // Display a property that has parameters. 
   pi = t->GetProperty( "Item" );
   parms = pi->GetIndexParameters();
   Console::WriteLine( "{0}.{1} has {2} parameters.", t->FullName, pi->Name, parms->GetLength( 0 ) );
   for ( int i = 0; i < parms->GetLength( 0 ); i++ )
   {
      Console::WriteLine( "    Parameter: {0}", parms[ i ]->Name );

   }
   return 0;
}

/*
 This example produces the following output:
 MyProperty.Caption has 0 parameters.
 MyProperty.Item has 1 parameters.
    Parameter: Index
 */
using System;
using System.Reflection;
 
// A class that contains some properties.
public class MyProperty   
{
    // Define a simple string property.
    private string caption = "A Default caption";
    public string Caption
    {
        get{return caption;}
        set {if(caption!=value) {caption = value;}
        }
    }

    // A very limited indexer that gets or sets one of four 
    // strings.
    private string[] strings = {"abc", "def", "ghi", "jkl"};
    public string this[int Index]    
    {
        get
        {
            return strings[Index];
        }
        set
        {
            strings[Index] = value;
        }
    }
}
 
class Mypropertyinfo
{
    public static int Main()
    {
        // Get the type and PropertyInfo.
        Type t = Type.GetType("MyProperty");
        PropertyInfo pi = t.GetProperty("Caption");
 
        // Get the public GetIndexParameters method.
        ParameterInfo[] parms = pi.GetIndexParameters();
        Console.WriteLine("\r\n" + t.FullName + "." + pi.Name
            + " has " + parms.GetLength(0) + " parameters.");
 
        // Display a property that has parameters. The default 
        // name of an indexer is "Item".
        pi = t.GetProperty("Item");
        parms = pi.GetIndexParameters();
        Console.WriteLine(t.FullName + "." + pi.Name + " has " + 
            parms.GetLength(0) + " parameters.");
        foreach( ParameterInfo p in parms )
        {
            Console.WriteLine("   Parameter: " + p.Name);
        }

        return 0;
    }
}
/*
 This example produces the following output:
 MyProperty.Caption has 0 parameters.
 MyProperty.Item has 1 parameters.
    Parameter: Index
 */
Imports System
Imports System.Reflection
Imports System.Collections
Imports Microsoft.VisualBasic

' A test class that has some properties.
Public Class MyProperty

    ' Define a simple string property.
    Private myCaption As String = "A Default caption"
    Public Property Caption() As String
        Get
            Return myCaption
        End Get
        Set(ByVal Value As String)
            If myCaption <> value Then
                myCaption = value
            End If
        End Set
    End Property

    ' A very limited indexed default property that gets or
    ' sets one of four string values.
    Private strings() As String = {"abc", "def", "ghi", "jkl"}
    Public Default Property Item(ByVal Index As Integer) As String
        Get
            Return strings(Index)
        End Get
        Set
            strings(Index) = Value
        End Set 
    End Property
End Class

Public Class Example

    Public Shared Function Main() As Integer

        ' Get the type and PropertyInfo.
        Dim t As Type = GetType(MyProperty)
        Dim pi As PropertyInfo = t.GetProperty("Caption")

        ' Get an array containing the parameters (if any).
        Dim params As ParameterInfo() = pi.GetIndexParameters()
        Console.WriteLine(vbCrLf & t.FullName & "." & pi.Name & _
           " has " & params.GetLength(0) & " parameters.")

        ' Display a property that has parameters.
        pi = t.GetProperty("Item")
        params = pi.GetIndexParameters()
        Console.WriteLine(t.FullName & "." & pi.Name & _
           " has " & params.GetLength(0) & " parameters.")
        For Each p As ParameterInfo In params
            Console.WriteLine("   Parameter: " & p.Name)
        Next

        Return 0
    End Function
End Class

' This example produces the following output:
' MyProperty.Caption has 0 parameters.
' MyProperty.Item has 1 parameters.
'    Parameter: Index

설명

반환된 된 배열에서 모든 필수 매개 변수 정보를 추출 합니다.Extract any required parameter information from the returned array.

사용 하 여 GetIndexParameters 메서드를 먼저 클래스를 가져옵니다 Type합니다.To use the GetIndexParameters method, first get the class Type. Type, 가져오기는 PropertyInfo합니다.From the Type, get the PropertyInfo. PropertyInfo를 사용 하 여를 GetIndexParameters 메서드.From the PropertyInfo, use the GetIndexParameters method.

보안

ReflectionPermission
호출 될 때 런타임에 바인딩된 메커니즘을 통해 같은 InvokeMember(String, BindingFlags, Binder, Object, Object[], ParameterModifier[], CultureInfo, String[])합니다.when invoked late-bound through mechanisms such as InvokeMember(String, BindingFlags, Binder, Object, Object[], ParameterModifier[], CultureInfo, String[]). 연관된 열거형: MemberAccessAssociated enumeration: MemberAccess.

적용 대상