NamedPipeServerStream.WaitForConnection 方法

定義

命名空間:

System.IO.Pipes

組件:

System.IO.Pipes.dll

來源:

NamedPipeServerStream.Unix.cs

等候用戶端連接到這個 NamedPipeServerStream 物件。

public:
 void WaitForConnection();

public void WaitForConnection ();

member this.WaitForConnection : unit -> unit

Public Sub WaitForConnection ()

例外狀況

InvalidOperationException

管道連接已經建立。

-或-

尚未設定管道控制代碼。

ObjectDisposedException

管道已關閉。

IOException

管道連線已中斷。

範例

下列範例示範使用命名管道將字串從父進程傳送至子進程的方法。 這個範例會在 NamedPipeServerStream 父進程中建立物件。 這個物件具有 PipeDirection 的值 Out，然後會封鎖物件，直到 NamedPipeClientStream 物件建立與 NamedPipeServerStream 對象的連接為止。 這個範例是 針對和 NamedPipeClientStream 類別提供之較大範例的NamedPipeServerStream一部分。

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

備註

呼叫這個方法會導致 NamedPipeServerStream 對象封鎖，直到用戶端連線為止。