ProcessStartInfo.RedirectStandardInput Özellik

Tanım

Uygulama girişinin StandardInput akıştan okunup okunmadığını gösteren bir değer alır veya ayarlar.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

Özellik Değeri

girişin StandardInputokunmalıdır true; Aksi takdirde, false.true if input should be read from StandardInput; otherwise, false. Varsayılan, false değeridir.The default is false.

Örnekler

Aşağıdaki örnekte bir işlemin StandardInput akışının nasıl yeniden yönlendirileceği gösterilmektedir.The following example illustrates how to redirect the StandardInput stream of a process. sort komutu, metin girişi okuyan ve sıralayan bir konsol uygulamasıdır.The sort command is a console application that reads and sorts text input.

Örnek, sort komutunu yeniden yönlendirilen girdi ile başlatır.The example starts the sort command with redirected input. Ardından kullanıcıdan metin ister ve yeniden yönlendirilen StandardInput akışı aracılığıyla sort işleme metni geçirir.It then prompts the user for text, and passes the text to the sort process through the redirected StandardInput stream. sort sonuçları konsolundaki kullanıcıya gösterilir.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.IO
Imports System.Diagnostics
Imports System.ComponentModel

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
    End Class  'StandardInputTest
End Namespace 'Process_StandardInput_Sample

Açıklamalar

Bir Process giriş metnini standart giriş akışından, genellikle klavyeden okuyabilir.A Process can read input text from its standard input stream, typically the keyboard. StandardInput akışını yeniden yönlendirerek, bir işlemin girişini programlı bir şekilde belirtebilirsiniz.By redirecting the StandardInput stream, you can programmatically specify the input of a process. Örneğin, klavye girişini kullanmak yerine, belirli bir dosyanın içeriğinden veya başka bir uygulamadan alınan bir metin sağlayabilirsiniz.For example, instead of using keyboard input, you can provide text from the contents of a designated file or output from another application.

Not

RedirectStandardInput trueolarak ayarlamak istiyorsanız UseShellExecute false ayarlamanız gerekir.You must set UseShellExecute to false if you want to set RedirectStandardInput to true. Aksi takdirde, StandardInput akışa yazmak bir özel durum oluşturur.Otherwise, writing to the StandardInput stream throws an exception.

Şunlara uygulanır

Ayrıca bkz.