Type.MakeArrayType Método

Definición

Devuelve un objeto Type que representa una matriz del tipo actual.Returns a Type object that represents an array of the current type.

Sobrecargas

MakeArrayType()

Devuelve un objeto Type que representa una matriz unidimensional del tipo actual, con un límite inferior de cero.Returns a Type object representing a one-dimensional array of the current type, with a lower bound of zero.

MakeArrayType(Int32)

Devuelve un objeto Type que representa una matriz del tipo actual, con el número de dimensiones especificado.Returns a Type object representing an array of the current type, with the specified number of dimensions.

Ejemplos

En el ejemplo de código siguiente se crea una matriz, ref ( ByRef en Visual Basic) y tipos de puntero para la Test clase.The following code example creates array, ref (ByRef in Visual Basic), and pointer types for the Test class.

using namespace System;
using namespace System::Reflection;

public ref class Example
{
public:
   static void Main()
   {
      // Create a Type object that represents a one-dimensional
      // array of Example objects.
      Type^ t = Example::typeid->MakeArrayType();
      Console::WriteLine( L"\r\nArray of Example: {0}", t );
      
      // Create a Type object that represents a two-dimensional
      // array of Example objects.
      t = Example::typeid->MakeArrayType( 2 );
      Console::WriteLine( L"\r\nTwo-dimensional array of Example: {0}", t );
      
      // Demonstrate an exception when an invalid array rank is
      // specified.
      try
      {
         t = Example::typeid->MakeArrayType(  -1 );
      }
      catch ( Exception^ ex ) 
      {
         Console::WriteLine( L"\r\n{0}", ex );
      }
      
      // Create a Type object that represents a ByRef parameter
      // of type Example.
      t = Example::typeid->MakeByRefType();
      Console::WriteLine( L"\r\nByRef Example: {0}", t );
      
      // Get a Type object representing the Example class, a
      // MethodInfo representing the "Test" method, a ParameterInfo
      // representing the parameter of type Example, and finally
      // a Type object representing the type of this ByRef parameter.
      // Compare this Type object with the Type object created using
      // MakeByRefType.
      Type^ t2 = Example::typeid;
      MethodInfo^ mi = t2->GetMethod( L"Test" );
      ParameterInfo^ pi = mi->GetParameters()[ 0 ];
      Type^ pt = pi->ParameterType;
      Console::WriteLine( L"Are the ByRef types equal? {0}", (t == pt) );
      
      // Create a Type object that represents a pointer to an
      // Example object.
      t = Example::typeid->MakePointerType();
      Console::WriteLine( L"\r\nPointer to Example: {0}", t );
   }

   // A sample method with a ByRef parameter.
   //
   void Test( interior_ptr<Example^> /*e*/ )
   {
   }
};

int main()
{
   Example::Main();
}

/* This example produces output similar to the following:

Array of Example: Example[]

Two-dimensional array of Example: Example[,]

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at System.RuntimeType.MakeArrayType(Int32 rank) in c:\vbl\ndp\clr\src\BCL\System\RtType.cs:line 2999
   at Example.Main()

ByRef Example: Example&
Are the ByRef types equal? True

Pointer to Example: Example*

 */
using System;
using System.Reflection;

public class Example
{
    public static void Main()
    {
        // Create a Type object that represents a one-dimensional
        // array of Example objects.
        Type t = typeof(Example).MakeArrayType();
        Console.WriteLine("\r\nArray of Example: {0}", t);

        // Create a Type object that represents a two-dimensional
        // array of Example objects.
        t = typeof(Example).MakeArrayType(2);
        Console.WriteLine("\r\nTwo-dimensional array of Example: {0}", t);

        // Demonstrate an exception when an invalid array rank is
        // specified.
        try
        {
            t = typeof(Example).MakeArrayType(-1);
        }
        catch(Exception ex)
        {
            Console.WriteLine("\r\n{0}", ex);
        }

        // Create a Type object that represents a ByRef parameter
        // of type Example.
        t = typeof(Example).MakeByRefType();
        Console.WriteLine("\r\nByRef Example: {0}", t);

        // Get a Type object representing the Example class, a
        // MethodInfo representing the "Test" method, a ParameterInfo
        // representing the parameter of type Example, and finally
        // a Type object representing the type of this ByRef parameter.
        // Compare this Type object with the Type object created using
        // MakeByRefType.
        Type t2 = typeof(Example);
        MethodInfo mi = t2.GetMethod("Test");
        ParameterInfo pi = mi.GetParameters()[0];
        Type pt = pi.ParameterType;
        Console.WriteLine("Are the ByRef types equal? {0}", (t == pt));

        // Create a Type object that represents a pointer to an
        // Example object.
        t = typeof(Example).MakePointerType();
        Console.WriteLine("\r\nPointer to Example: {0}", t);
    }

    // A sample method with a ByRef parameter.
    //
    public void Test(ref Example e)
    {
    }
}

/* This example produces output similar to the following:

Array of Example: Example[]

Two-dimensional array of Example: Example[,]

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at System.RuntimeType.MakeArrayType(Int32 rank) in c:\vbl\ndp\clr\src\BCL\System\RtType.cs:line 2999
   at Example.Main()

ByRef Example: Example&
Are the ByRef types equal? True

Pointer to Example: Example*

 */
Imports System.Reflection

Public Class Example
    Public Shared Sub Main()
        ' Create a Type object that represents a one-dimensional
        ' array of Example objects.
        Dim t As Type = GetType(Example).MakeArrayType()
        Console.WriteLine(vbCrLf & "Array of Example: " & t.ToString())

        ' Create a Type object that represents a two-dimensional
        ' array of Example objects.
        t = GetType(Example).MakeArrayType(2)
        Console.WriteLine(vbCrLf & "Two-dimensional array of Example: " & t.ToString())

        ' Demonstrate an exception when an invalid array rank is
        ' specified.
        Try
            t = GetType(Example).MakeArrayType(-1)
        Catch ex As Exception
            Console.WriteLine(vbCrLf & ex.ToString())
        End Try

        ' Create a Type object that represents a ByRef parameter
        ' of type Example.
        t = GetType(Example).MakeByRefType()
        Console.WriteLine(vbCrLf & "ByRef Example: " & t.ToString())

        ' Get a Type object representing the Example class, a
        ' MethodInfo representing the "Test" method, a ParameterInfo
        ' representing the parameter of type Example, and finally
        ' a Type object representing the type of this ByRef parameter.
        ' Compare this Type object with the Type object created using
        ' MakeByRefType.
        Dim t2 As Type = GetType(Example)
        Dim mi As MethodInfo = t2.GetMethod("Test")
        Dim pi As ParameterInfo = mi.GetParameters()(0)
        Dim pt As Type = pi.ParameterType
        Console.WriteLine("Are the ByRef types equal? " & (t Is pt))

        ' Create a Type object that represents a pointer to an
        ' Example object.
        t = GetType(Example).MakePointerType()
        Console.WriteLine(vbCrLf & "Pointer to Example: " & t.ToString())
    End Sub

    ' A sample method with a ByRef parameter.
    '
    Public Sub Test(ByRef e As Example)
    End Sub
End Class

' This example produces output similar to the following:
'
'Array of Example: Example[]
'
'Two-dimensional array of Example: Example[,]
'
'System.IndexOutOfRangeException: Index was outside the bounds of the array.
'   at System.RuntimeType.MakeArrayType(Int32 rank) in c:\vbl\ndp\clr\src\BCL\System\RtType.cs:line 2999
'   at Example.Main()
'
'ByRef Example: Example&
'Are the ByRef types equal? True
'
'Pointer to Example: Example*

MakeArrayType()

Devuelve un objeto Type que representa una matriz unidimensional del tipo actual, con un límite inferior de cero.Returns a Type object representing a one-dimensional array of the current type, with a lower bound of zero.

public:
 abstract Type ^ MakeArrayType();
public:
 virtual Type ^ MakeArrayType();
public abstract Type MakeArrayType ();
public virtual Type MakeArrayType ();
abstract member MakeArrayType : unit -> Type
abstract member MakeArrayType : unit -> Type
override this.MakeArrayType : unit -> Type
Public MustOverride Function MakeArrayType () As Type
Public Overridable Function MakeArrayType () As Type

Devoluciones

Type

Objeto Type que representa una matriz unidimensional del tipo actual, con un límite inferior de cero.A Type object representing a one-dimensional array of the current type, with a lower bound of zero.

Excepciones

El método invocado no se admite en la clase base.The invoked method is not supported in the base class. Las clases derivadas deben proporcionar una implementación.Derived classes must provide an implementation.

El tipo actual es TypedReference.The current type is TypedReference.

O bien-or- El tipo actual es un tipo ByRef.The current type is a ByRef type. Es decir, IsByRef devuelve true.That is, IsByRef returns true.

Comentarios

El MakeArrayType método proporciona una manera de generar tipos de matriz cuyos tipos de elemento se calculan en tiempo de ejecución.The MakeArrayType method provides a way to generate array types whose element types are computed at run time.

Nota: El Common Language Runtime hace una distinción entre vectores (es decir, matrices unidimensionales que siempre son de base cero) y matrices multidimensionales.Note The common language runtime makes a distinction between vectors (that is, one-dimensional arrays that are always zero-based) and multidimensional arrays. Un vector, que siempre tiene una sola dimensión, no es lo mismo que una matriz multidimensional que solo tiene una dimensión.A vector, which always has only one dimension, is not the same as a multidimensional array that happens to have only one dimension. Esta sobrecarga del método solo se puede usar para crear tipos de vectores y es la única forma de crear un tipo de vector.This method overload can only be used to create vector types, and it is the only way to create a vector type. Utilice la MakeArrayType(Int32) sobrecarga del método para crear tipos de matriz multidimensionales.Use the MakeArrayType(Int32) method overload to create multidimensional array types.

Consulte también

Se aplica a

MakeArrayType(Int32)

Devuelve un objeto Type que representa una matriz del tipo actual, con el número de dimensiones especificado.Returns a Type object representing an array of the current type, with the specified number of dimensions.

public:
 abstract Type ^ MakeArrayType(int rank);
public:
 virtual Type ^ MakeArrayType(int rank);
public abstract Type MakeArrayType (int rank);
public virtual Type MakeArrayType (int rank);
abstract member MakeArrayType : int -> Type
abstract member MakeArrayType : int -> Type
override this.MakeArrayType : int -> Type
Public MustOverride Function MakeArrayType (rank As Integer) As Type
Public Overridable Function MakeArrayType (rank As Integer) As Type

Parámetros

rank
Int32

Número de dimensiones de la matriz.The number of dimensions for the array. Este número debe ser menor o igual que 32.This number must be less than or equal to 32.

Devoluciones

Type

Objeto que representa una matriz del tipo actual, con el número de dimensiones especificado.An object representing an array of the current type, with the specified number of dimensions.

Excepciones

rank no es válido.rank is invalid. Por ejemplo, 0 o negativo.For example, 0 or negative.

No se admite el método invocado en la clase base.The invoked method is not supported in the base class.

El tipo actual es TypedReference.The current type is TypedReference.

O bien-or- El tipo actual es un tipo ByRef.The current type is a ByRef type. Es decir, IsByRef devuelve true.That is, IsByRef returns true.

O bien-or- rank es mayor que 32.rank is greater than 32.

Comentarios

El MakeArrayType método proporciona una manera de generar tipos de matriz cuyos tipos de elemento se calculan en tiempo de ejecución.The MakeArrayType method provides a way to generate array types whose element types are computed at run time.

Nota

El Common Language Runtime hace una distinción entre vectores (es decir, matrices unidimensionales que siempre son de base cero) y matrices multidimensionales.The common language runtime makes a distinction between vectors (that is, one-dimensional arrays that are always zero-based) and multidimensional arrays. Un vector, que siempre tiene una sola dimensión, no es lo mismo que una matriz multidimensional que solo tiene una dimensión.A vector, which always has only one dimension, is not the same as a multidimensional array that happens to have only one dimension. No se puede usar esta sobrecarga del método para crear un tipo de vector. Si rank es 1, esta sobrecarga del método devuelve un tipo de matriz multidimensional que tiene una dimensión.You cannot use this method overload to create a vector type; if rank is 1, this method overload returns a multidimensional array type that happens to have one dimension. Utilice la MakeArrayType() sobrecarga del método para crear tipos de vector.Use the MakeArrayType() method overload to create vector types.

Consulte también

Se aplica a