MissingMemberException MissingMemberException MissingMemberException MissingMemberException Class

定義

存在しない、または public として宣言されていないクラス メンバーに動的にアクセスしようとした場合にスローされる例外。The exception that is thrown when there is an attempt to dynamically access a class member that does not exist or that is not declared as public. クラス ライブラリ内のメンバーを削除するか、名前を変更したときは、そのライブラリを参照するすべてのアセンブリを再コンパイルします。If a member in a class library has been removed or renamed, recompile any assemblies that reference that library.

public ref class MissingMemberException : MemberAccessException
[System.Runtime.InteropServices.ComVisible(true)]
[System.Serializable]
public class MissingMemberException : MemberAccessException
type MissingMemberException = class
    inherit MemberAccessException
    interface ISerializable
Public Class MissingMemberException
Inherits MemberAccessException
継承
派生
属性
実装

このリフレクションを使用して、存在しないメソッドを呼び出すしようとした場合の動作の例に示すとフィールドが存在しないにアクセスします。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. キャッチすることにより、アプリケーションの復旧、 MissingMethodExceptionMissingFieldException、およびMissingMemberExceptionします。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.

注釈

通常、コードが存在しないクラスのメンバーにアクセスしようとしている場合、コンパイル エラーが生成されます。Normally a compilation error is generated if the code attempts to access a nonexistent member of a class. MissingMemberException 2 番目のアセンブリで、変更は反映されませんし、フィールドまたはメソッドが削除されるか、1 つのアセンブリの名前が変更を処理するために設計されています。MissingMemberException is designed to handle cases where a field or a method is deleted or renamed in one assembly and the change is not reflected in a second assembly. 実行時にMissingMemberExceptionが 2 つ目のアセンブリ内のコードが最初のアセンブリの不足しているメンバーにアクセスしようとしたときにスローされます。At runtime, MissingMemberException will be thrown when the code in the second assembly attempts to access the missing member in the first assembly.

MissingMemberException 基本クラスは、MissingFieldExceptionMissingMethodExceptionします。MissingMemberException is the base class for MissingFieldException and MissingMethodException. 派生クラスのいずれかを使用することをお勧め一般MissingMemberExceptionを具体的には、エラーの正確な性質を示します。In general it is better to use one of the derived classes of MissingMemberException to more precisely indicate the exact nature of the error. スロー、MissingMemberExceptionのみで不足しているメンバーのエラーの一般的なケースをキャプチャしたい場合。Throw a MissingMemberException if you are only interested in capturing the general case of a missing member error.

MissingMemberException 0x80131512 の値を持つ HRESULT COR_E_MISSINGMEMBER を使用します。MissingMemberException uses the HRESULT COR_E_MISSINGMEMBER, that has the value 0x80131512.

インスタンスの初期プロパティ値の一覧についてはMissingMemberExceptionを参照してください、MissingMemberExceptionコンス トラクター。For a list of initial property values for an instance of MissingMemberException, see the MissingMemberException constructors.

コンストラクター

MissingMemberException() MissingMemberException() MissingMemberException() MissingMemberException()

MissingMemberException クラスの新しいインスタンスを初期化します。Initializes a new instance of the MissingMemberException class.

MissingMemberException(SerializationInfo, StreamingContext) MissingMemberException(SerializationInfo, StreamingContext) MissingMemberException(SerializationInfo, StreamingContext) MissingMemberException(SerializationInfo, StreamingContext)

シリアル化したデータを使用して、MissingMemberException クラスの新しいインスタンスを初期化します。Initializes a new instance of the MissingMemberException class with serialized data.

MissingMemberException(String) MissingMemberException(String) MissingMemberException(String) MissingMemberException(String)

指定したエラー メッセージを使用して、MissingMemberException クラスの新しいインスタンスを初期化します。Initializes a new instance of the MissingMemberException class with a specified error message.

MissingMemberException(String, Exception) MissingMemberException(String, Exception) MissingMemberException(String, Exception) MissingMemberException(String, Exception)

指定したエラー メッセージと、この例外の原因である内部例外への参照を使用して、MissingMemberException クラスの新しいインスタンスを初期化します。Initializes a new instance of the MissingMemberException class with a specified error message and a reference to the inner exception that is the root cause of this exception.

MissingMemberException(String, String) MissingMemberException(String, String) MissingMemberException(String, String) MissingMemberException(String, String)

クラス名とメンバー名を指定して、MissingMemberException クラスの新しいインスタンスを初期化します。Initializes a new instance of the MissingMemberException class with the specified class name and member name.

フィールド

ClassName ClassName ClassName ClassName

存在しないメンバーのクラス名を保持します。Holds the class name of the missing member.

MemberName MemberName MemberName MemberName

存在しないメンバーの名前を保持します。Holds the name of the missing member.

Signature Signature Signature Signature

存在しないメンバーのシグネチャを保持します。Holds the signature of the missing member.

プロパティ

Data Data Data Data

例外に関する追加のユーザー定義情報を提供する、キー/値ペアのコレクションを取得します。Gets a collection of key/value pairs that provide additional user-defined information about the exception.

(Inherited from Exception)
HelpLink HelpLink HelpLink HelpLink

この例外に関連付けられているヘルプ ファイルへのリンクを取得または設定します。Gets or sets a link to the help file associated with this exception.

(Inherited from Exception)
HResult HResult HResult HResult

特定の例外に割り当てられているコード化数値である HRESULT を取得または設定します。Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.

(Inherited from Exception)
InnerException InnerException InnerException InnerException

現在の例外の原因となる Exception インスタンスを取得します。Gets the Exception instance that caused the current exception.

(Inherited from Exception)
Message Message Message Message

存在しないメンバーのクラス名、メンバー名、シグネチャを示す文字列を取得します。Gets the text string showing the class name, the member name, and the signature of the missing member.

Source Source Source Source

エラーの原因となるアプリケーションまたはオブジェクトの名前を取得または設定します。Gets or sets the name of the application or the object that causes the error.

(Inherited from Exception)
StackTrace StackTrace StackTrace StackTrace

呼び出し履歴で直前のフレームの文字列形式を取得します。Gets a string representation of the immediate frames on the call stack.

(Inherited from Exception)
TargetSite TargetSite TargetSite TargetSite

現在の例外がスローされたメソッドを取得します。Gets the method that throws the current exception.

(Inherited from Exception)

メソッド

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

指定したオブジェクトが、現在のオブジェクトと等しいかどうかを判断します。Determines whether the specified object is equal to the current object.

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

派生クラスでオーバーライドされた場合、それ以後に発生する 1 つ以上の例外の主要な原因である Exception を返します。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()

既定のハッシュ関数として機能します。Serves as the default hash function.

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

存在しないメンバーのクラス名、メンバー名、シグネチャ、および追加例外情報を使用して、SerializationInfo オブジェクトを設定します。Sets the SerializationInfo object with the class name, the member name, the signature of the missing member, and additional exception information.

GetType() GetType() GetType() GetType()

現在のインスタンスのランタイム型を取得します。Gets the runtime type of the current instance.

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

現在の Object の簡易コピーを作成します。Creates a shallow copy of the current Object.

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

現在の例外の文字列形式を作成して返します。Creates and returns a string representation of the current exception.

(Inherited from Exception)

イベント

SerializeObjectState SerializeObjectState SerializeObjectState SerializeObjectState

例外がシリアル化され、例外に関するシリアル化されたデータを含む例外状態オブジェクトが作成されたときに発生します。Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception.

(Inherited from Exception)

適用対象

こちらもご覧ください