EndOfStreamException クラス

[アーティクル]
03/28/2008

ストリームの末尾を越えて読み込もうとしたときにスローされる例外。

この型のすべてのメンバの一覧については、EndOfStreamException メンバを参照してください。

System.Object
   System.Exception
      System.SystemException
         System.IO.IOException
            System.IO.EndOfStreamException

<Serializable>
Public Class EndOfStreamException   Inherits IOException
[C#]
[Serializable]
public class EndOfStreamException : IOException
[C++]
[Serializable]
public __gc class EndOfStreamException : public IOException
[JScript]
public
   Serializable
class EndOfStreamException extends IOException

スレッドセーフ

この型の public static (Visual Basicでは Shared) のすべてのメンバは、マルチスレッド操作で安全に使用できます。インスタンスのメンバの場合は、スレッドセーフであるとは限りません。

解説

EndOfStreamException は、値 0x80070026 の HRESULT COR_E_ENDOFSTREAM を使用します。

使用例

[Visual Basic, C#, C++] 次に示すのは、 MemoryStream クラス上で BinaryReader クラスと BinaryWriter クラスを使用し、メモリに対して Double データの読み取りと書き込みを実行するコード例です。

 
Imports System
Imports System.IO

Public Class BinaryRW

    Shared Sub Main()
    
        Dim i As Integer
        Const upperBound As Integer = 1000

        ' Create random data to write to the stream.
        Dim dataArray(upperBound) As Double
        Dim randomGenerator As New Random()
        For i = 0 To upperBound
            dataArray(i) = 100.1 * randomGenerator.NextDouble()
        Next i

        Dim binWriter As New BinaryWriter(New MemoryStream())
        Try

            ' Write data to the stream.
            Console.WriteLine("Writing data to the stream.")
            
            For i = 0 To upperBound
                binWriter.Write(dataArray(i))
            Next i

            ' Create a reader using the stream from the writer.
            Dim binReader As New BinaryReader(binWriter.BaseStream)

            ' Return to the beginning of the stream.
            binReader.BaseStream.Position = 0

            ' Read and verify the data.
            Try
                Console.WriteLine("Verifying the written data.")
                For i = 0 To upperBound
                    If binReader.ReadDouble() <> dataArray(i) Then
                        Console.WriteLine("Error writing data.")
                        Exit For
                    End If
                Next i
                Console.WriteLine("The data was written and verified.")
            Catch ex As EndOfStreamException
                Console.WriteLine("Error writing data: {0}.", _
                    ex.GetType().Name)
            End Try
        Finally
            binWriter.Close()
        End Try

    End Sub
End Class

[C#] 
using System;
using System.IO;

class BinaryRW
{
    static void Main()
    {
        int i;
        const int arrayLength = 1000;

        // Create random data to write to the stream.
        Random randomGenerator = new Random();
        double[] dataArray = new double[arrayLength];
        for(i = 0; i < arrayLength; i++)
        {
            dataArray[i] = 100.1 * randomGenerator.NextDouble();
        }

        using(BinaryWriter binWriter = 
            new BinaryWriter(new MemoryStream()))
        {
            // Write the data to the stream.
            Console.WriteLine("Writing data to the stream.");
            for(i = 0; i < arrayLength; i++)
            {
                binWriter.Write(dataArray[i]);
            }

            // Create a reader using the stream from the writer.
            using(BinaryReader binReader = 
                new BinaryReader(binWriter.BaseStream))
            {
                try
                {
                    // Return to the beginning of the stream.
                    binReader.BaseStream.Position = 0;

                    // Read and verify the data.
                    Console.WriteLine("Verifying the written data.");
                    for(i = 0; i < arrayLength; i++)
                    {
                        if(binReader.ReadDouble() != dataArray[i])
                        {
                            Console.WriteLine("Error writing data.");
                            break;
                        }
                    }
                    Console.WriteLine("The data was written " +
                        "and verified.");
                }
                catch(EndOfStreamException e)
                {
                    Console.WriteLine("Error writing data: {0}.",
                        e.GetType().Name);
                }
            }
        }
    }
}

[C++] 
#using <mscorlib.dll>
using namespace System;
using namespace System::IO;

void main()
{
    int i;
    const int arrayLength = 1000;

    // Create random data to write to the stream.
    double dataArray __gc[] = new double __gc[arrayLength];
    Random* randomGenerator = new Random();
    for(i = 0; i < arrayLength; i++)
    {
        dataArray[i] = 100.1 * randomGenerator->NextDouble();
    }

    BinaryWriter* binWriter  = 
        new BinaryWriter(new MemoryStream());
    try
    {
        // Write data to the stream.
        Console::WriteLine(S"Writing data to the stream.");
        i = 0;
        for(i = 0; i < arrayLength; i++)
        {
                binWriter->Write(dataArray[i]);
        }

        // Create a reader using the stream from the writer.
        BinaryReader* binReader  = 
            new BinaryReader(binWriter->BaseStream);

        // Return to the beginning of the stream.
        binReader->BaseStream->Position = 0;

        try
        {
            // Read and verify the data.
            i = 0;
            Console::WriteLine(S"Verifying the written data.");
            for(i = 0; i < arrayLength; i++)
            {
                if(binReader->ReadDouble() != dataArray[i])
                {
                    Console::WriteLine(S"Error writing data.");
                    break;
                }
            }
            Console::WriteLine(S"The data was written and verified.");
        }
        catch(EndOfStreamException* e)
        {
            Console::WriteLine(S"Error writing data: {0}.",
                e->GetType()->Name);
        }
    }
    __finally
    {
        binWriter->Close();
    }
}

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必要条件

名前空間: System.IO

プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ, .NET Compact Framework - Windows CE .NET

アセンブリ: Mscorlib (Mscorlib.dll 内)

参照

EndOfStreamException クラス

スレッドセーフ

解説

使用例

必要条件

参照

その他のリソース