FileWebRequest.EndGetResponse メソッドとは何？わかりやすく解説 Weblio辞書

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.NET Framework クラスライブラリリファレンス

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FileWebRequest.EndGetResponse メソッド

ファイルシステムリソースへの非同期要求を終了します。

名前空間: System.Net
アセンブリ: System (system.dll 内)
構文

Visual Basic (宣言)

Public Overrides Function
 EndGetResponse ( _
    asyncResult As IAsyncResult _
) As WebResponse

Visual Basic (使用法)

Dim instance As FileWebRequest
Dim asyncResult As IAsyncResult
Dim returnValue As WebResponse

returnValue = instance.EndGetResponse(asyncResult)

public override WebResponse EndGetResponse (
    IAsyncResult asyncResult
)

C++

public:
virtual WebResponse^ EndGetResponse (
    IAsyncResult^ asyncResult
) override

public WebResponse EndGetResponse (
    IAsyncResult asyncResult
)

JScript

public override function EndGetResponse (
    asyncResult : IAsyncResult
) : WebResponse

パラメータ

asyncResult: 応答に対する保留中の要求を参照する IAsyncResult。

戻り値
ファイルシステムリソースからの応答を格納する WebResponse。

例外

例外の種類	条件
ArgumentNullException	asyncResult が null 参照 (Visual Basic では Nothing) です。

解説

EndGetResponse メソッドは、BeginGetResponse メソッドで開始したファイルシステムリソースの非同期要求を完了します。

使用例

EndGetResponse メソッドを使用して、ファイルシステムリソースに対する非同期要求を終了するコード例を次に示します。

Visual Basic

Public Class RequestDeclare
    Public myFileWebRequest As FileWebRequest
     
    Public Sub New()
        myFileWebRequest = Nothing
    End Sub ' New
End Class ' RequestDeclare



Class FileWebRequest_resbeginend
    
    Public Shared allDone As
 New ManualResetEvent(False)
    
    ' Entry point which delegates to C-style main Private Function.
    Public Overloads Shared
 Sub Main()
        Main(GetCommandLineArgs())
    End Sub
    
    Overloads Shared Sub
 Main(args() As String)
        
        If args.Length < 2 Then
            Console.WriteLine(ControlChars.Cr + "Please enter
 the file name as command line parameter:")
            Console.WriteLine("Usage:FileWebRequest_resbeginend
 " + ChrW(60) + "systemname" + ChrW(62)
 + "/" + ChrW(60) + "sharedfoldername" + ChrW(62) + "/" + ChrW(60) +
 "filename" + ChrW(62) + ControlChars.Cr + "Example:FileWebRequest_resbeginend shafeeque/shaf/hello.txt")
        
        Else
            Try

                ' Place a webrequest.
                Dim myWebRequest As WebRequest
 = WebRequest.Create(("file://" + args(1)))
                ' Create an instance of the 'RequestDeclare' and associating
 the 'myWebRequest' to it.        
                Dim myRequestDeclare As New
 RequestDeclare()
                myRequestDeclare.myFileWebRequest = CType(myWebRequest, FileWebRequest)
                
                ' Begin the Asynchronous request for getting file content
 using 'BeginGetResponse()' method.    
                 Dim asyncResult As IAsyncResult
 = CType(myRequestDeclare.myFileWebRequest.BeginGetResponse(AddressOf
 RespCallback, myRequestDeclare), IAsyncResult)
                 allDone.WaitOne()

            
            Catch e As ArgumentNullException
                Console.WriteLine(("ArgumentNullException is :"
 + e.Message))
            Catch e As UriFormatException
                Console.WriteLine(("UriFormatException is :"
 + e.Message))
            End Try
        End If
    End Sub ' Main
    
    
    Private Shared Sub RespCallback(ar
 As IAsyncResult)



        ' State of request is asynchronous.
        Dim requestDeclare As RequestDeclare
 = CType(ar.AsyncState, RequestDeclare)
        
        Dim myFileWebRequest As FileWebRequest
 = requestDeclare.myFileWebRequest
        
        ' End the Asynchronus request by calling the 'EndGetResponse()'
 method.
        Dim myFileWebResponse As FileWebResponse
 = CType(myFileWebRequest.EndGetResponse(ar), FileWebResponse)
        
        ' Reade the response into Stream.
        Dim streamReader As New
 StreamReader(myFileWebResponse.GetResponseStream())

       
        Dim readBuffer(256) As [Char]
        
        Dim count As Integer
 = streamReader.Read(readBuffer, 0, 256)
        
        Console.WriteLine("The contents of the file are :"+ControlChars.Cr)
        
        While count > 0
            Dim str As New
 [String](readBuffer, 0, count)
            Console.WriteLine(str)
            count = streamReader.Read(readBuffer, 0, 256)
        End While
         streamReader.Close()
        ' Release the response object resources.
         myFileWebResponse.Close()
        allDone.Set()
        Console.WriteLine("File reading is over.")
    End Sub ' RespCallback 
End Class ' FileWebRequest_resbeginend

public class RequestDeclare
{
   public FileWebRequest myFileWebRequest;    
   
     public RequestDeclare()
    {
        myFileWebRequest = null;
    }
}


class FileWebRequest_resbeginend
{

    public static ManualResetEvent allDone
 = new ManualResetEvent(false);

    static void Main(string[]
 args)
    {
        
        if (args.Length < 1)
        {
           Console.WriteLine("\nPlease enter the file name as command line parameter:");
            Console.WriteLine("Usage:FileWebRequest_resbeginend <systemname>/<sharedfoldername>/<filename>\nExample:FileWebRequest_resbeginend
 shafeeque/shaf/hello.txt");
        }  
        else
        {
          try
        {


              // Place a 'Webrequest'.
              WebRequest myWebRequest= WebRequest.Create("file://"+args[0]);
              // Create an instance of the 'RequestDeclare' and associating
 the 'myWebRequest' to it.        
              RequestDeclare myRequestDeclare = new RequestDeclare();
              myRequestDeclare.myFileWebRequest = (FileWebRequest)myWebRequest;
          

              // Begin the Asynchronous request for getting file content
 using 'BeginGetResponse()' method.    
              IAsyncResult asyncResult =(IAsyncResult) myRequestDeclare.myFileWebRequest.BeginGetResponse(new
 AsyncCallback(RespCallback),myRequestDeclare);            
              allDone.WaitOne();

        
           }
        catch(ArgumentNullException e)
           {
              Console.WriteLine("ArgumentNullException is :"+e.Message);
           }
           catch(UriFormatException e)
          {
              Console.WriteLine("UriFormatException is :"+e.Message);
          }
       }
    }

  private static void RespCallback(IAsyncResult
 ar)
  {    


           // State of request is asynchronous.
            RequestDeclare requestDeclare=(RequestDeclare) ar.AsyncState;
                
            FileWebRequest  myFileWebRequest=requestDeclare.myFileWebRequest;
        
           // End the Asynchronus request by calling the 'EndGetResponse()'
 method.
            
            FileWebResponse myFileWebResponse = (FileWebResponse) myFileWebRequest.EndGetResponse(ar);


            // Reade the response into Stream.
            StreamReader streamReader= new StreamReader(myFileWebResponse.GetResponseStream());


            Char[] readBuffer = new Char[256];
                
            int count = streamReader.Read( readBuffer, 0, 256
 );

            Console.WriteLine("The contents of the file are :\n");
    
            while (count > 0) 
            {
                String str = new String(readBuffer, 0, count);
                Console.WriteLine(str);
                count = streamReader.Read(readBuffer, 0, 256);
            }
            
            streamReader.Close();
            // Release the response object resources.
            myFileWebResponse.Close();
            allDone.Set();
            Console.WriteLine("File reading is over.");    
    }

}

C++

public ref class RequestDeclare
{
public:
   FileWebRequest^ myFileWebRequest;
   RequestDeclare()
   {
      myFileWebRequest = nullptr;
   }

};

ref class FileWebRequest_resbeginend
{
public:
   static ManualResetEvent^ allDone = gcnew ManualResetEvent(
 false );
   static void RespCallback( IAsyncResult^
 ar )
   {
      
      // State of request is asynchronous.
      RequestDeclare^ requestDeclare = dynamic_cast<RequestDeclare^>(ar->AsyncState);
      FileWebRequest^ myFileWebRequest = requestDeclare->myFileWebRequest;
      
      // End the Asynchronus request by calling the 'EndGetResponse()'
 method.
      FileWebResponse^ myFileWebResponse = dynamic_cast<FileWebResponse^>(myFileWebRequest->EndGetResponse(
 ar ));
      
      // Reade the response into Stream.
      StreamReader^ streamReader = gcnew StreamReader( myFileWebResponse->GetResponseStream()
 );
      array<Char>^readBuffer = gcnew array<Char>(256);
      int count = streamReader->Read( readBuffer, 0, 256 );
      Console::WriteLine( "The contents of the file are :\n" );
      while ( count > 0 )
      {
         String^ str = gcnew String( readBuffer,0,count );
         Console::WriteLine( str );
         count = streamReader->Read( readBuffer, 0, 256 );
      }

      streamReader->Close();
      
      // Release the response Object* resources.
      myFileWebResponse->Close();
      allDone->Set();
      Console::WriteLine( "File reading is over." );
   }

};

int main()
{
   array<String^>^args = Environment::GetCommandLineArgs();
   if ( args->Length < 2 )
   {
      Console::WriteLine( "\nPlease enter the file name as command line parameter:"
 );
      Console::WriteLine( "Usage:FileWebRequest_resbeginend <systemname>/<sharedfoldername>/<filename>\n"
 );
      Console::WriteLine( "Example:FileWebRequest_resbeginend shafeeque/shaf/hello.txt"
 );
   }
   else
   {
      try
      {
         
         // Place a 'Webrequest'.
         WebRequest^ myWebRequest = WebRequest::Create( String::Concat( "file://",
 args[ 1 ] ) );
         
         // Create an instance of the 'RequestDeclare' and associating
 the 'myWebRequest' to it.
         RequestDeclare^ myRequestDeclare = gcnew RequestDeclare;
         myRequestDeclare->myFileWebRequest = dynamic_cast<FileWebRequest^>(myWebRequest);
         
         // Begin the Asynchronous request for getting file content
 using 'BeginGetResponse()' method.
         IAsyncResult^ asyncResult = dynamic_cast<IAsyncResult^>(myRequestDeclare->myFileWebRequest->BeginGetResponse(
 gcnew AsyncCallback( &FileWebRequest_resbeginend::RespCallback ), myRequestDeclare
 ));
         FileWebRequest_resbeginend::allDone->WaitOne();
      }
      catch ( ArgumentNullException^ e ) 
      {
         Console::WriteLine( "ArgumentNullException is : {0}", e->Message
 );
      }
      catch ( UriFormatException^ e ) 
      {
         Console::WriteLine( "UriFormatException is : {0}", e->Message
 );
      }

   }
}

public class RequestDeclare
{
    public FileWebRequest myFileWebRequest;

    public RequestDeclare()
    {
        myFileWebRequest = null;
    } //RequestDeclare
} //RequestDeclare

class FileWebRequestResBeginEnd
{
    public static ManualResetEvent allDone
 = new ManualResetEvent(false);

    public static void main(String[]
 args)
    {
        if (args.length < 1) {
            Console.WriteLine("\nPlease enter the file name as command line
 " 
                + " parameter:");
            Console.WriteLine("Usage:FileWebRequest_resbeginend <systemname>/"
 
                + "<sharedfoldername>/<filename>\nExample:"
 
            + "FileWebRequest_resbeginend shafeeque/shaf/hello.txt");
        }
        else {
            try {
                // Place a 'Webrequest'.
                WebRequest myWebRequest = WebRequest.Create("file://"
 
                    + args[0]);

                // Create an instance of the 'RequestDeclare' and associating
                // the 'myWebRequest' to it.        
                RequestDeclare myRequestDeclare = new RequestDeclare();
                myRequestDeclare.myFileWebRequest = 
                    (FileWebRequest)(myWebRequest);

                // Begin the Asynchronous request for getting file content
                // using 'BeginGetResponse()' method.    
                IAsyncResult asyncResult = (IAsyncResult)(myRequestDeclare.
                    myFileWebRequest.BeginGetResponse(new AsyncCallback(
                    RespCallback), myRequestDeclare));
                allDone.WaitOne();
            }
            catch (ArgumentNullException e) {
                Console.WriteLine("ArgumentNullException is :" 
                    + e.get_Message());
            }
            catch (UriFormatException e) {
                Console.WriteLine("UriFormatException is :" 
                    + e.get_Message());
            }
        }
    } //main

    private static void RespCallback(IAsyncResult
 ar)
    {
        // State of request is asynchronous.
        RequestDeclare requestDeclare = (RequestDeclare)(ar.
            get_AsyncState());
        FileWebRequest myFileWebRequest = requestDeclare.myFileWebRequest;

        // End the Asynchronus request by calling the
        // 'EndGetResponse()' method.
        FileWebResponse myFileWebResponse = (FileWebResponse)(myFileWebRequest
            .EndGetResponse(ar));

        // Reade the response into Stream.
        StreamReader streamReader = new StreamReader(myFileWebResponse
            .GetResponseStream());
        char readBuffer[] = new char[256];
        int count = streamReader.Read(readBuffer, 0, 256);

        Console.WriteLine("The contents of the file are :\n");
        while (count > 0) {
            String str = new String(readBuffer, 0, count);
            Console.WriteLine(str);
            count = streamReader.Read(readBuffer, 0, 256);
        }
        streamReader.Close();

        // Release the response object resources.
        myFileWebResponse.Close();
        allDone.Set();
        Console.WriteLine("File reading is over.");
    } //RespCallback
} //FileWebRequestResBeginEnd

プラットフォーム

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
FileWebRequest クラス
FileWebRequest メンバ
System.Net 名前空間
GetResponse
BeginGetResponse
その他の技術情報
非同期要求の作成

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FileWebRequest.EndGetResponse メソッドとは？ わかりやすく解説

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FileWebRequest.EndGetResponse メソッドとは？わかりやすく解説