匿名管道可在本機計算機上提供進程間通訊。 它們提供的功能比命名管道少，但也需要更少的額外負荷。 您可以使用匿名管道，讓本機計算機上的進程間通訊更容易。 您無法使用匿名管道透過網路進行通訊。
若要實作匿名管道，請使用 AnonymousPipeServerStream 和 AnonymousPipeClientStream 類別。
範例 1
下列範例示範如何使用匿名管道，將字串從父進程傳送至子進程。 此範例在父進程中以 AnonymousPipeServerStream 值 PipeDirection 建立 Out 物件。然後父進程會使用用戶端句柄來建立 AnonymousPipeClientStream 物件，進而建立子進程。 子進程具有 PipeDirection 的值 In。
父進程接著會將使用者提供的字串傳送至子進程。 字串會顯示在子程序的控制台上。
下列範例顯示伺服器進程。
using System;
using System.IO;
using System.IO.Pipes;
using System.Diagnostics;
class PipeServer
{
static void Main()
{
Process pipeClient = new Process();
pipeClient.StartInfo.FileName = "pipeClient.exe";
using (AnonymousPipeServerStream pipeServer =
new AnonymousPipeServerStream(PipeDirection.Out,
HandleInheritability.Inheritable))
{
Console.WriteLine($"[SERVER] Current TransmissionMode: {pipeServer.TransmissionMode}.");
// Pass the client process a handle to the server.
pipeClient.StartInfo.Arguments =
pipeServer.GetClientHandleAsString();
pipeClient.StartInfo.UseShellExecute = false;
pipeClient.Start();
pipeServer.DisposeLocalCopyOfClientHandle();
try
{
// Read user input and send that to the client process.
using (StreamWriter sw = new StreamWriter(pipeServer))
{
sw.AutoFlush = true;
// Send a 'sync message' and wait for client to receive it.
sw.WriteLine("SYNC");
pipeServer.WaitForPipeDrain();
// Send the console input to the client process.
Console.Write("[SERVER] Enter text: ");
sw.WriteLine(Console.ReadLine());
}
}
// Catch the IOException that is raised if the pipe is broken
// or disconnected.
catch (IOException e)
{
Console.WriteLine($"[SERVER] Error: {e.Message}");
}
}
pipeClient.WaitForExit();
pipeClient.Close();
Console.WriteLine("[SERVER] Client quit. Server terminating.");
}
}
Imports System.IO
Imports System.IO.Pipes
Imports System.Diagnostics
Class PipeServer
Shared Sub Main()
Dim pipeClient As New Process()
pipeClient.StartInfo.FileName = "pipeClient.exe"
Using pipeServer As New AnonymousPipeServerStream(PipeDirection.Out, _
HandleInheritability.Inheritable)
Console.WriteLine("[SERVER] Current TransmissionMode: {0}.",
pipeServer.TransmissionMode)
' Pass the client process a handle to the server.
pipeClient.StartInfo.Arguments = pipeServer.GetClientHandleAsString()
pipeClient.StartInfo.UseShellExecute = false
pipeClient.Start()
pipeServer.DisposeLocalCopyOfClientHandle()
Try
' Read user input and send that to the client process.
Using sw As New StreamWriter(pipeServer)
sw.AutoFlush = true
' Send a 'sync message' and wait for client to receive it.
sw.WriteLine("SYNC")
pipeServer.WaitForPipeDrain()
' Send the console input to the client process.
Console.Write("[SERVER] Enter text: ")
sw.WriteLine(Console.ReadLine())
End Using
Catch e As IOException
' Catch the IOException that is raised if the pipe is broken
' or disconnected.
Console.WriteLine("[SERVER] Error: {0}", e.Message)
End Try
End Using
pipeClient.WaitForExit()
pipeClient.Close()
Console.WriteLine("[SERVER] Client quit. Server terminating.")
End Sub
End Class
範例 2
下列範例顯示客戶端進程。 伺服器進程會啟動客戶端進程，並提供該進程客戶端控制欄。 從用戶端程式代碼產生的可執行檔應該命名 pipeClient.exe ，並複製到與伺服器可執行檔相同的目錄，再執行伺服器進程。
using System;
using System.IO;
using System.IO.Pipes;
class PipeClient
{
static void Main(string[] args)
{
if (args.Length > 0)
{
using (PipeStream pipeClient =
new AnonymousPipeClientStream(PipeDirection.In, args[0]))
{
Console.WriteLine($"[CLIENT] Current TransmissionMode: {pipeClient.TransmissionMode}.");
using (StreamReader sr = new StreamReader(pipeClient))
{
// Display the read text to the console
string temp;
// Wait for 'sync message' from the server.
do
{
Console.WriteLine("[CLIENT] Wait for sync...");
temp = sr.ReadLine();
}
while (!temp.StartsWith("SYNC"));
// Read the server data and echo to the console.
while ((temp = sr.ReadLine()) != null)
{
Console.WriteLine("[CLIENT] Echo: " + temp);
}
}
}
}
Console.Write("[CLIENT] Press Enter to continue...");
Console.ReadLine();
}
}
Imports System.IO
Imports System.IO.Pipes
Class PipeClient
Shared Sub Main(args() as String)
If args.Length > 0 Then
Using pipeClient As New AnonymousPipeClientStream(PipeDirection.In, args(0))
Console.WriteLine("[CLIENT] Current TransmissionMode: {0}.", _
pipeClient.TransmissionMode)
Using sr As New StreamReader(pipeClient)
' Display the read text to the console
Dim temp As String
' Wait for 'sync message' from the server.
Do
Console.WriteLine("[CLIENT] Wait for sync...")
temp = sr.ReadLine()
Loop While temp.StartsWith("SYNC") = False
' Read the server data and echo to the console.
temp = sr.ReadLine()
While Not temp = Nothing
Console.WriteLine("[CLIENT] Echo: " + temp)
temp = sr.ReadLine()
End While
End Using
End Using
End If
Console.Write("[CLIENT] Press Enter to continue...")
Console.ReadLine()
End Sub
End Class
