ProcessStartInfo.RedirectStandardInput ProcessStartInfo.RedirectStandardInput ProcessStartInfo.RedirectStandardInput ProcessStartInfo.RedirectStandardInput Property

定義

アプリケーションの入力を StandardInput ストリームから読み取るかどうかを示す値を取得または設定します。Gets or sets a value indicating whether the input for an application is read from the StandardInput stream.

public:
 property bool RedirectStandardInput { bool get(); void set(bool value); };
public bool RedirectStandardInput { get; set; }
member this.RedirectStandardInput : bool with get, set
Public Property RedirectStandardInput As Boolean

プロパティ値

StandardInput から入力を読み取る場合は true。それ以外の場合は falsetrue if input should be read from StandardInput; otherwise, false. 既定値は、false です。The default is false.

次の例は、プロセスのStandardInputストリームをリダイレクトする方法を示しています。The following example illustrates how to redirect the StandardInput stream of a process. sortコマンドは、テキスト入力の読み取りと並べ替えを行うコンソールアプリケーションです。The sort command is a console application that reads and sorts text input.

この例ではsort 、リダイレクトされた入力を使用してコマンドを開始します。The example starts the sort command with redirected input. 次に、ユーザーにテキストの入力を求め、リダイレクトsort StandardInputされたストリームを通じてプロセスにテキストを渡します。It then prompts the user for text, and passes the text to the sort process through the redirected StandardInput stream. sort結果はコンソールでユーザーに表示されます。The sort results are displayed to the user on the console.

#using <System.dll>

using namespace System;
using namespace System::IO;
using namespace System::Diagnostics;
using namespace System::ComponentModel;
int main()
{
   Console::WriteLine(  "Ready to sort one or more text lines..." );
   
   // Start the Sort.exe process with redirected input.
   // Use the sort command to sort the input text.
   Process^ myProcess = gcnew Process;
   if ( myProcess )
   {
      myProcess->StartInfo->FileName =  "Sort.exe";
      myProcess->StartInfo->UseShellExecute = false;
      myProcess->StartInfo->RedirectStandardInput = true;
      myProcess->Start();
      StreamWriter^ myStreamWriter = myProcess->StandardInput;
      if ( myStreamWriter )
      {
         
         // Prompt the user for input text lines to sort. 
         // Write each line to the StandardInput stream of
         // the sort command.
         String^ inputText;
         int numLines = 0;
         do
         {
            Console::WriteLine(  "Enter a line of text (or press the Enter key to stop):" );
            inputText = Console::ReadLine();
            if ( inputText && inputText->Length > 0 )
            {
               numLines++;
               myStreamWriter->WriteLine( inputText );
            }
         }
         while ( inputText && inputText->Length != 0 );
         
         // Write a report header to the console.
         if ( numLines > 0 )
         {
            Console::WriteLine(  " {0} sorted text line(s) ", numLines.ToString() );
            Console::WriteLine(  "------------------------" );
         }
         else
         {
            Console::WriteLine(  " No input was sorted" );
         }
         
         // End the input stream to the sort command.
         // When the stream closes, the sort command
         // writes the sorted text lines to the 
         // console.
         myStreamWriter->Close();
      }
      
      // Wait for the sort process to write the sorted text lines.
      myProcess->WaitForExit();
      myProcess->Close();
   }
}


using System;
using System.IO;
using System.Diagnostics;
using System.ComponentModel;

namespace ProcessStandardInputSample
{
    class StandardInputTest
    {
        static void Main()
        {
            Console.WriteLine("Ready to sort one or more text lines...");

            // Start the Sort.exe process with redirected input.
            // Use the sort command to sort the input text.
            using (Process myProcess = new Process())
            {
                myProcess.StartInfo.FileName = "Sort.exe";
                myProcess.StartInfo.UseShellExecute = false;
                myProcess.StartInfo.RedirectStandardInput = true;

                myProcess.Start();

                StreamWriter myStreamWriter = myProcess.StandardInput;

                // Prompt the user for input text lines to sort. 
                // Write each line to the StandardInput stream of
                // the sort command.
                String inputText;
                int numLines = 0;
                do
                {
                    Console.WriteLine("Enter a line of text (or press the Enter key to stop):");

                    inputText = Console.ReadLine();
                    if (inputText.Length > 0)
                    {
                        numLines++;
                        myStreamWriter.WriteLine(inputText);
                    }
                } while (inputText.Length > 0);

                // Write a report header to the console.
                if (numLines > 0)
                {
                    Console.WriteLine($" {numLines} sorted text line(s) ");
                    Console.WriteLine("------------------------");
                }
                else
                {
                    Console.WriteLine(" No input was sorted");
                }

                // End the input stream to the sort command.
                // When the stream closes, the sort command
                // writes the sorted text lines to the 
                // console.
                myStreamWriter.Close();

                // Wait for the sort process to write the sorted text lines.
                myProcess.WaitForExit();
            }
        }
    }
}

Imports System
Imports System.IO
Imports System.Diagnostics
Imports System.ComponentModel
Imports Microsoft.VisualBasic

Namespace Process_StandardInput_Sample

    Class StandardInputTest

        Shared Sub Main()

            Console.WriteLine("Ready to sort one or more text lines...")

            ' Start the Sort.exe process with redirected input.
            ' Use the sort command to sort the input text.
            Using myProcess As New Process()

                myProcess.StartInfo.FileName = "Sort.exe"
                myProcess.StartInfo.UseShellExecute = False
                myProcess.StartInfo.RedirectStandardInput = True

                myProcess.Start()

                Dim myStreamWriter As StreamWriter = myProcess.StandardInput

                ' Prompt the user for input text lines to sort. 
                ' Write each line to the StandardInput stream of
                ' the sort command.
                Dim inputText As String
                Dim numLines As Integer = 0
                Do
                    Console.WriteLine("Enter a line of text (or press the Enter key to stop):")

                    inputText = Console.ReadLine()
                    If inputText.Length > 0 Then
                        numLines += 1
                        myStreamWriter.WriteLine(inputText)
                    End If
                Loop While inputText.Length <> 0


                ' Write a report header to the console.
                If numLines > 0 Then
                    Console.WriteLine($" {numLines} sorted text line(s) ")
                    Console.WriteLine("------------------------")
                Else
                    Console.WriteLine(" No input was sorted")
                End If

                ' End the input stream to the sort command.
                ' When the stream closes, the sort command
                ' writes the sorted text lines to the 
                ' console.
                myStreamWriter.Close()


                ' Wait for the sort process to write the sorted text lines.
                myProcess.WaitForExit()
            End Using

        End Sub 'Main
    End Class  'StandardInputTest
End Namespace 'Process_StandardInput_Sample

注釈

Process 、標準入力ストリーム (通常はキーボード) から入力テキストを読み取ることができます。A Process can read input text from its standard input stream, typically the keyboard. StandardInputストリームをリダイレクトすることによって、プロセスの入力をプログラムで指定できます。By redirecting the StandardInput stream, you can programmatically specify the input of a process. たとえば、キーボード入力を使用する代わりに、指定されたファイルの内容または別のアプリケーションからの出力のテキストを指定できます。For example, instead of using keyboard input, you can provide text from the contents of a designated file or output from another application.

注意

UseShellExecuteをにfalse 設定するRedirectStandardInput場合は、をに設定する必要があります。 trueYou must set UseShellExecute to false if you want to set RedirectStandardInput to true. それ以外の場合、 StandardInputストリームへの書き込みでは例外がスローされます。Otherwise, writing to the StandardInput stream throws an exception.

適用対象

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