Process.StandardInput Eigenschaft
Definition
Ruft einen Stream ab, in den die Eingaben der Anwendung geschrieben werden.Gets a stream used to write the input of the application.
public:
property System::IO::StreamWriter ^ StandardInput { System::IO::StreamWriter ^ get(); };
public System.IO.StreamWriter StandardInput { get; }
[System.ComponentModel.Browsable(false)]
public System.IO.StreamWriter StandardInput { get; }
member this.StandardInput : System.IO.StreamWriter
[<System.ComponentModel.Browsable(false)>]
member this.StandardInput : System.IO.StreamWriter
Public ReadOnly Property StandardInput As StreamWriter
Eigenschaftswert
Ein StreamWriter zum Schreiben des Standardeingabestreams der Anwendung.A StreamWriter that can be used to write the standard input stream of the application.
- Attribute
Ausnahmen
Der StandardInput-Stream wurde nicht definiert, da RedirectStandardInput auf false
festgelegt ist.The StandardInput stream has not been defined because RedirectStandardInput is set to false
.
Beispiele
Im folgenden Beispiel wird veranschaulicht, wie der Daten StandardInput Strom eines Prozesses umgeleitet wird.The following example illustrates how to redirect the StandardInput stream of a process. Im Beispiel wird der sort
Befehl mit umgeleiteter Eingabe gestartet.The example starts the sort
command with redirected input. Anschließend wird der Benutzer zur Eingabe von Text aufgefordert und über sort
den umgeleiteten Stream an den Prozess weiter StandardInput geleitet.It then prompts the user for text, and passes that to the sort
process by means of the redirected StandardInput stream. Die sort
Ergebnisse werden dem Benutzer in der Konsole angezeigt.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
Hinweise
Ein Process kann den Eingabetext aus dem Standardeingabestream lesen, in der Regel die Tastatur.A Process can read input text from its standard input stream, typically the keyboard. Wenn Sie den Stream umleiten StandardInput , können Sie die Eingabe Programm gesteuert angeben.By redirecting the StandardInput stream, you can programmatically specify the input. Anstatt Tastatureingaben zu verwenden, können Sie z. b. Text aus dem Inhalt einer angegebenen Datei oder Ausgabe einer anderen Anwendung bereitstellen.For example, instead of using keyboard input, you can provide text from the contents of a designated file or output from another application.
Hinweis
Um zu verwenden StandardInput , müssen Sie ProcessStartInfo.UseShellExecute auf festlegen false
, und Sie müssen ProcessStartInfo.RedirectStandardInput auf festlegen true
.To use StandardInput, you must set ProcessStartInfo.UseShellExecute to false
, and you must set ProcessStartInfo.RedirectStandardInput to true
. Andernfalls löst das Schreiben in den StandardInput Stream eine Ausnahme aus.Otherwise, writing to the StandardInput stream throws an exception.