NetworkStream.Writeable Eigenschaft

Definition

Namespace:

System.Net.Sockets

Assembly:

System.Net.Sockets.dll

Quelle:

NetworkStream.cs

Ruft einen Wert ab, der angibt, ob in den NetworkStream geschrieben werden kann.

protected:
 property bool Writeable { bool get(); void set(bool value); };

protected bool Writeable { get; set; }

member this.Writeable : bool with get, set

Protected Property Writeable As Boolean

Eigenschaftswert

Boolean

true, wenn Daten in den Stream geschrieben werden können, andernfalls false. Der Standardwert ist true.

Beispiele

Im folgenden Codebeispiel überprüft die CanCommunicate -Eigenschaft die Writeable -Eigenschaft, um zu bestimmen, ob beschreibbar NetworkStream ist.

#using <System.dll>

using namespace System;
using namespace System::Net;
using namespace System::Net::Sockets;

ref class MyNetworkStream_Sub_Class: public NetworkStream
{
public:
   MyNetworkStream_Sub_Class( System::Net::Sockets::Socket^ socket, bool ownsSocket )
      : NetworkStream( socket, ownsSocket )
   {
   }

   property bool IsConnected 
   {
      // You can use the Socket method to examine the underlying Socket.
      bool get()
      {
         return this->Socket->Connected;
      }
   }

   property bool CanCommunicate 
   {
      bool get()
      {
         if ( !this->Readable | !this->Writeable )
         {
            return false;
         }
         else
         {
            return true;
         }
      }
   }

using System;
using System.Net;
using System.Net.Sockets;

public class MyNetworkStream_Sub_Class : NetworkStream
{

    public MyNetworkStream_Sub_Class(Socket socket, bool ownsSocket) :
        base(socket, ownsSocket)
    {
    }
    // You can use the Socket method to examine the underlying Socket.
    public bool IsConnected
    {
        get
        {
            return this.Socket.Connected;
        }
    }

    public bool CanCommunicate
    {
        get
        {
            if (!this.Readable | !this.Writeable)
            {
                return false;
            }
            else
            {
                return true;
            }
        }
    }

Public Class MyNetworkStream_Sub_Class
   Inherits NetworkStream
   
   
   Public Sub New(socket As Socket, ownsSocket As Boolean)
      MyBase.New(socket, ownsSocket)
   End Sub
   
   ' Suppose you wanted a property for determining if Socket is connected. You can use
   ' the protected method 'Socket' to return underlying Socket.
   
   Public ReadOnly Property IsConnected() As Boolean
      Get
         Return Me.Socket.Connected
      End Get
   End Property
   
   ' You could also use public NetworkStream methods 'CanRead' and 'CanWrite'.
   
   Public ReadOnly Property CanCommunicate() As Boolean
      Get
         If Not Me.Readable Or Not Me.Writeable  Then
            Return False
         Else
            Return True
         End If
      End Get
   End Property
    
   Public Shared Sub DoSomethingSignificant()
   End Sub
    ' Do something significant in here

Hinweise

Sie müssen von der NetworkStream -Klasse ableiten, um die Writeable -Eigenschaft zu verwenden. Wenn Writeable ist true, NetworkStream lässt Aufrufe der Write -Methode zu. Sie können auch ermitteln, ob ein NetworkStream beschreibbar ist, indem Sie die öffentlich zugängliche CanWrite Eigenschaft überprüfen.

Die Writeable -Eigenschaft wird festgelegt, wenn initialisiert NetworkStream wird.

Weitere Informationen

• CanWrite
• Readable