NamedPipeServerStream.WaitForConnection Método

public:
 void WaitForConnection();

public void WaitForConnection();

[System.Security.SecurityCritical]
public void WaitForConnection();

member this.WaitForConnection : unit -> unit

[<System.Security.SecurityCritical>]
member this.WaitForConnection : unit -> unit

Public Sub WaitForConnection ()

Atributos

SecurityCriticalAttribute

Exceções

Exemplos

O exemplo seguinte demonstra um método para enviar uma string de um processo pai para um processo filho usando pipes nomeados. Este exemplo cria um NamedPipeServerStream objeto num processo pai. Este objeto tem um PipeDirection valor de Out, que depois bloqueia até que um NamedPipeClientStream objeto estabeleça uma ligação ao NamedPipeServerStream objeto. Este exemplo faz parte de um exemplo mais amplo fornecido para as NamedPipeServerStream classes e NamedPipeClientStream .

using System;
using System.IO;
using System.IO.Pipes;

class PipeServer
{
    static void Main()
    {
        using (NamedPipeServerStream pipeServer =
            new NamedPipeServerStream("testpipe", PipeDirection.Out))
        {
            Console.WriteLine("NamedPipeServerStream object created.");

            // Wait for a client to connect
            Console.Write("Waiting for client connection...");
            pipeServer.WaitForConnection();

            Console.WriteLine("Client connected.");
            try
            {
                // Read user input and send that to the client process.
                using (StreamWriter sw = new StreamWriter(pipeServer))
                {
                    sw.AutoFlush = true;
                    Console.Write("Enter text: ");
                    sw.WriteLine(Console.ReadLine());
                }
            }
            // Catch the IOException that is raised if the pipe is broken
            // or disconnected.
            catch (IOException e)
            {
                Console.WriteLine("ERROR: {0}", e.Message);
            }
        }
    }
}

Imports System.IO
Imports System.IO.Pipes

Class PipeServer

    Shared Sub Main()
        Dim pipeServer As New NamedPipeServerStream("testpipe", PipeDirection.Out)

        Console.WriteLine("NamedPipeServerStream object created.")

        ' Wait for a client to connect
        Console.Write("Waiting for a client connection...")
        pipeServer.WaitForConnection()

        Console.WriteLine("Client connected.")
        Try
            'Read user input and send that to the client process.
            Dim sw As New StreamWriter(pipeServer)
            sw.AutoFlush = True
            Console.Write("Enter Text: ")
            sw.WriteLine(Console.ReadLine())
        Catch ex As IOException
            ' Catch the IOException that is raised if the pipe is broken
            ' or disconnected
            Console.WriteLine("ERROR: {0}", ex.Message)
        End Try
    End Sub
End Class

Observações

Chamar este método faz com que o NamedPipeServerStream objeto bloqueie até que um cliente se ligue.