NetworkStream.Writeable Свойство

Определение

Получает значение, указывающее, предусмотрена ли запись в объект NetworkStream.Gets a value that indicates whether the NetworkStream is writable.

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

Значение свойства

Значение true, если данные могут быть записаны в поток; в противном случае — значение false.true if data can be written to the stream; otherwise, false. Значение по умолчанию — true.The default value is true.

Примеры

В следующем примере кода свойство CanCommunicate проверяет свойство Writeable, чтобы определить, является ли NetworkStream доступным для записи.In the following code example, the CanCommunicate property checks the Writeable property to determine if the NetworkStream is writable.

#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
   

Комментарии

Для использования свойства Writeable необходимо быть производным от класса NetworkStream.You must derive from the NetworkStream class to use the Writeable property. Если Writeable true, NetworkStream допускает вызовы метода Write.If Writeable is true, NetworkStream allows calls to the Write method. Можно также определить, является ли NetworkStream доступным для записи, проверив общедоступное свойство CanWrite.You can also determine whether a NetworkStream is writable by checking the publicly accessible CanWrite property.

Свойство Writeable задается при инициализации NetworkStream.The Writeable property is set when the NetworkStream is initialized.

Применяется к

Дополнительно