MissingMethodException MissingMethodException MissingMethodException MissingMethodException Class

Definición

Excepción que se produce cuando se intenta tener acceso dinámicamente a un método que no existe.The exception that is thrown when there is an attempt to dynamically access a method that does not exist.

public ref class MissingMethodException : MissingMemberException
[System.Runtime.InteropServices.ComVisible(true)]
[System.Serializable]
public class MissingMethodException : MissingMemberException
type MissingMethodException = class
    inherit MissingMemberException
    interface ISerializable
Public Class MissingMethodException
Inherits MissingMemberException
Herencia
Atributos
Implementaciones

Ejemplos

Este ejemplo se muestra lo que sucede si se intenta usar la reflexión para llamar a un método que no existe y el acceso a un campo que no existe.This example shows what happens if you attempt to use reflection to call a method that does not exist and access a field that does not exist. La aplicación recupera detectando la MissingMethodException, MissingFieldException, y MissingMemberException.The application recovers by catching the MissingMethodException, MissingFieldException, and MissingMemberException.

using namespace System;
using namespace System::Reflection;

ref class App
{
};

int main()
{
    try
    {
        // Attempt to call a static DoSomething method defined in the App class.
        // However, because the App class does not define this method,
        // a MissingMethodException is thrown.
        App::typeid->InvokeMember("DoSomething", BindingFlags::Static |
            BindingFlags::InvokeMethod, nullptr, nullptr, nullptr);
    }
    catch (MissingMethodException^ ex)
    {
        // Show the user that the DoSomething method cannot be called.
        Console::WriteLine("Unable to call the DoSomething method: {0}",
            ex->Message);
    }

    try
    {
        // Attempt to access a static AField field defined in the App class.
        // However, because the App class does not define this field,
        // a MissingFieldException is thrown.
        App::typeid->InvokeMember("AField", BindingFlags::Static |
            BindingFlags::SetField, nullptr, nullptr, gcnew array<Object^>{5});
    }
    catch (MissingFieldException^ ex)
    {
        // Show the user that the AField field cannot be accessed.
        Console::WriteLine("Unable to access the AField field: {0}",
            ex->Message);
    }

    try
    {
        // Attempt to access a static AnotherField field defined in the App class.
        // However, because the App class does not define this field,
        // a MissingFieldException is thrown.
        App::typeid->InvokeMember("AnotherField", BindingFlags::Static |
            BindingFlags::GetField, nullptr, nullptr, nullptr);
    }
    catch (MissingMemberException^ ex)
    {
        // Notice that this code is catching MissingMemberException which is the
        // base class of MissingMethodException and MissingFieldException.
        // Show the user that the AnotherField field cannot be accessed.
        Console::WriteLine("Unable to access the AnotherField field: {0}",
            ex->Message);
    }
}
// This code produces the following output.
//
// Unable to call the DoSomething method: Method 'App.DoSomething' not found.
// Unable to access the AField field: Field 'App.AField' not found.
// Unable to access the AnotherField field: Field 'App.AnotherField' not found.
using System;
using System.Reflection;

public class App
{
    public static void Main()
    {

        try
        {
            // Attempt to call a static DoSomething method defined in the App class.
            // However, because the App class does not define this method,
            // a MissingMethodException is thrown.
            typeof(App).InvokeMember("DoSomething", BindingFlags.Static |
                BindingFlags.InvokeMethod, null, null, null);
        }
        catch (MissingMethodException e)
        {
            // Show the user that the DoSomething method cannot be called.
            Console.WriteLine("Unable to call the DoSomething method: {0}", e.Message);
        }

        try
        {
            // Attempt to access a static AField field defined in the App class.
            // However, because the App class does not define this field,
            // a MissingFieldException is thrown.
            typeof(App).InvokeMember("AField", BindingFlags.Static | BindingFlags.SetField,
                null, null, new Object[] { 5 });
        }
        catch (MissingFieldException e)
        {
         // Show the user that the AField field cannot be accessed.
         Console.WriteLine("Unable to access the AField field: {0}", e.Message);
        }

        try
        {
            // Attempt to access a static AnotherField field defined in the App class.
            // However, because the App class does not define this field,
            // a MissingFieldException is thrown.
            typeof(App).InvokeMember("AnotherField", BindingFlags.Static |
                BindingFlags.GetField, null, null, null);
        }
        catch (MissingMemberException e)
        {
         // Notice that this code is catching MissingMemberException which is the
         // base class of MissingMethodException and MissingFieldException.
         // Show the user that the AnotherField field cannot be accessed.
         Console.WriteLine("Unable to access the AnotherField field: {0}", e.Message);
        }
    }
}
// This code example produces the following output:
//
// Unable to call the DoSomething method: Method 'App.DoSomething' not found.
// Unable to access the AField field: Field 'App.AField' not found.
// Unable to access the AnotherField field: Field 'App.AnotherField' not found.
Imports System
Imports System.Reflection

Public Class App
    Public Shared Sub Main() 
        Try
            ' Attempt to call a static DoSomething method defined in the App class.
            ' However, because the App class does not define this method, 
            ' a MissingMethodException is thrown.
            GetType(App).InvokeMember("DoSomething", BindingFlags.Static Or BindingFlags.InvokeMethod, _
                                       Nothing, Nothing, Nothing)
        Catch e As MissingMethodException
            ' Show the user that the DoSomething method cannot be called.
            Console.WriteLine("Unable to call the DoSomething method: {0}", e.Message)
        End Try
        Try
            ' Attempt to access a static AField field defined in the App class.
            ' However, because the App class does not define this field, 
            ' a MissingFieldException is thrown.
            GetType(App).InvokeMember("AField", BindingFlags.Static Or BindingFlags.SetField, _
                                       Nothing, Nothing, New [Object]() {5})
        Catch e As MissingFieldException
            ' Show the user that the AField field cannot be accessed.
            Console.WriteLine("Unable to access the AField field: {0}", e.Message)
        End Try
        Try
            ' Attempt to access a static AnotherField field defined in the App class.
            ' However, because the App class does not define this field, 
            ' a MissingFieldException is thrown.
            GetType(App).InvokeMember("AnotherField", BindingFlags.Static Or BindingFlags.GetField, _
                                       Nothing, Nothing, Nothing)
        Catch e As MissingMemberException
            ' Notice that this code is catching MissingMemberException which is the  
            ' base class of MissingMethodException and MissingFieldException.
            ' Show the user that the AnotherField field cannot be accessed.
            Console.WriteLine("Unable to access the AnotherField field: {0}", e.Message)
        End Try
    End Sub 
End Class 
' This code example produces the following output:
'
' Unable to call the DoSomething method: Method 'App.DoSomething' not found.
' Unable to access the AField field: Field 'App.AField' not found.
' Unable to access the AnotherField field: Field 'App.AnotherField' not found.

Comentarios

Normalmente se genera un error de compilación si el código intenta tener acceso a un método de una clase que no existe.Normally a compilation error is generated if code attempts to access a nonexistent method of a class. MissingMethodException está diseñado para controlar los casos donde se intenta acceder dinámicamente a un método eliminado o cambiado de nombre de un ensamblado que no se hace referencia por su nombre seguro.MissingMethodException is designed to handle cases where an attempt is made to dynamically access a renamed or deleted method of an assembly that is not referenced by its strong name. MissingMethodException se produce cuando el código en un ensamblado dependiente intenta obtener acceso a un método que falta en un ensamblado que se ha modificado.MissingMethodException is thrown when code in a dependent assembly attempts to access a missing method in an assembly that was modified.

MissingMethodException utiliza HRESULT COR_E_MISSINGMETHOD, que tiene el valor 0 x 80131513.MissingMethodException uses the HRESULT COR_E_MISSINGMETHOD, that has the value 0x80131513.

Para obtener una lista de valores de propiedad iniciales de una instancia de MissingMethodException, consulte el MissingMethodException constructores.For a list of initial property values for an instance of MissingMethodException, see the MissingMethodException constructors.

Nota

Esta excepción no se incluye en .NET para Windows Store apps o biblioteca de clases Portable, pero algunos miembros que se inicia.This exception is not included in .NET for Windows Store apps or the Portable Class Library, but it is thrown by some members that are. Para capturar la excepción en ese caso, escribir un catch instrucción para MissingMemberException en su lugar.To catch the exception in that case, write a catch statement for MissingMemberException instead.

Constructores

MissingMethodException() MissingMethodException() MissingMethodException() MissingMethodException()

Inicializa una nueva instancia de la clase MissingMethodException.Initializes a new instance of the MissingMethodException class.

MissingMethodException(SerializationInfo, StreamingContext) MissingMethodException(SerializationInfo, StreamingContext) MissingMethodException(SerializationInfo, StreamingContext) MissingMethodException(SerializationInfo, StreamingContext)

Inicializa una nueva instancia de la clase MissingMethodException con datos serializados.Initializes a new instance of the MissingMethodException class with serialized data.

MissingMethodException(String) MissingMethodException(String) MissingMethodException(String) MissingMethodException(String)

Inicializa una nueva instancia de la clase MissingMethodException con el mensaje de error especificado.Initializes a new instance of the MissingMethodException class with a specified error message.

MissingMethodException(String, Exception) MissingMethodException(String, Exception) MissingMethodException(String, Exception) MissingMethodException(String, Exception)

Inicializa una nueva instancia de la clase MissingMethodException con el mensaje de error especificado y una referencia a la excepción interna que representa la causa de esta excepción.Initializes a new instance of the MissingMethodException class with a specified error message and a reference to the inner exception that is the cause of this exception.

MissingMethodException(String, String) MissingMethodException(String, String) MissingMethodException(String, String) MissingMethodException(String, String)

Inicializa una nueva instancia de la clase MissingMethodException con el nombre de la clase y el nombre del método que se hayan especificado.Initializes a new instance of the MissingMethodException class with the specified class name and method name.

Propiedades

Data Data Data Data

Obtiene una colección de pares clave-valor que proporcionan más información definida por el usuario sobre la excepción.Gets a collection of key/value pairs that provide additional user-defined information about the exception.

(Inherited from Exception)
HelpLink HelpLink HelpLink HelpLink

Obtiene o establece un vínculo al archivo de ayuda asociado a esta excepción.Gets or sets a link to the help file associated with this exception.

(Inherited from Exception)
HResult HResult HResult HResult

Obtiene o establece HRESULT, un valor numérico codificado que se asigna a una excepción específica.Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.

(Inherited from Exception)
InnerException InnerException InnerException InnerException

Obtiene la instancia Exception que produjo la excepción actual.Gets the Exception instance that caused the current exception.

(Inherited from Exception)
Message Message Message Message

Obtiene la cadena de texto que muestra el nombre de la clase, el nombre del método y la firma del método que no se encuentra.Gets the text string showing the class name, the method name, and the signature of the missing method. Esta propiedad es de sólo lectura.This property is read-only.

Source Source Source Source

Devuelve o establece el nombre de la aplicación o del objeto que generó el error.Gets or sets the name of the application or the object that causes the error.

(Inherited from Exception)
StackTrace StackTrace StackTrace StackTrace

Obtiene una representación de cadena de los marcos inmediatos en la pila de llamadas.Gets a string representation of the immediate frames on the call stack.

(Inherited from Exception)
TargetSite TargetSite TargetSite TargetSite

Obtiene el método que produjo la excepción actual.Gets the method that throws the current exception.

(Inherited from Exception)

Métodos

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Determina si el objeto especificado es igual al objeto actual.Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetBaseException() GetBaseException() GetBaseException() GetBaseException()

Cuando se reemplaza en una clase derivada, devuelve la clase Exception que representa la causa principal de una o más excepciones posteriores.When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions.

(Inherited from Exception)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Sirve como la función hash predeterminada.Serves as the default hash function.

(Inherited from Object)
GetObjectData(SerializationInfo, StreamingContext) GetObjectData(SerializationInfo, StreamingContext) GetObjectData(SerializationInfo, StreamingContext) GetObjectData(SerializationInfo, StreamingContext)

Establece el objeto SerializationInfo con el nombre de la clase, el nombre del miembro, la firma del miembro que falta e información adicional de la excepción.Sets the SerializationInfo object with the class name, the member name, the signature of the missing member, and additional exception information.

(Inherited from MissingMemberException)
GetType() GetType() GetType() GetType()

Obtiene el tipo de tiempo de ejecución de la instancia actual.Gets the runtime type of the current instance.

(Inherited from Exception)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Crea una copia superficial del Object actual.Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

Crea y devuelve una representación de cadena de la excepción actual.Creates and returns a string representation of the current exception.

(Inherited from Exception)

Eventos

SerializeObjectState SerializeObjectState SerializeObjectState SerializeObjectState

Ocurre cuando una excepción se serializa para crear un objeto de estado de excepción que contenga datos serializados sobre la excepción.Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception.

(Inherited from Exception)

Campos

ClassName ClassName ClassName ClassName

Contiene el nombre de clase del miembro que falta.Holds the class name of the missing member.

(Inherited from MissingMemberException)
MemberName MemberName MemberName MemberName

Contiene el nombre del miembro que falta.Holds the name of the missing member.

(Inherited from MissingMemberException)
Signature Signature Signature Signature

Contiene la firma del miembro que falta.Holds the signature of the missing member.

(Inherited from MissingMemberException)

Se aplica a

Consulte también: