NetworkStream.Readable 属性
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
获取或设置一个值，该值指示 NetworkStream 是否可以读取。
protected:
property bool Readable { bool get(); void set(bool value); };protected bool Readable { get; set; }member this.Readable : bool with get, setProtected Property Readable As Boolean属性值
如果 NetworkStream 可以读取，则为 true；否则为 false。 默认值是 true。
示例
在下面的代码示例中 CanCommunicate ， 属性检查 Readable 属性以确定 是否 NetworkStream 可读。
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
注解
必须从 NetworkStream 类派生才能使用 Readable 属性。 如果 Readable 为 true， NetworkStream 则允许调用 Read 方法。 还可以通过检查可公开访问CanRead的属性来确定 NetworkStream 是否可读。
初始化 Readable 时 NetworkStream 设置 属性。
