HttpListener.IsListening 屬性

定義

命名空間:
System.Net
組件:
System.dll, netstandard.dll, System.Net.HttpListener.dll

取得值，表示是否已啟動 HttpListener。Gets a value that indicates whether HttpListener has been started.

public:
 property bool IsListening { bool get(); };
public bool IsListening { get; }
member this.IsListening : bool
Public ReadOnly Property IsListening As Boolean

屬性值

Boolean

如果已啟動 HttpListener，則為 true；否則為 false。true if the HttpListener was started; otherwise, false.

範例

下列程式碼範例將示範如何使用這個屬性來判斷實例的接聽狀態。The following code example demonstrates using this property to determine the listening state of an instance.

public static void DisplayPrefixesAndState(HttpListener listener)
{
    // List the prefixes to which the server listens.
    HttpListenerPrefixCollection prefixes = listener.Prefixes;
    if (prefixes.Count == 0)
    {
        Console.WriteLine("There are no prefixes.");
    }
    foreach(string prefix in prefixes)
    {
        Console.WriteLine(prefix);
    }
    // Show the listening state.
    if (listener.IsListening)
    {
        Console.WriteLine("The server is listening.");
    }
}

Public Shared Sub DisplayPrefixesAndState(ByVal listener As HttpListener)
    ' List the prefixes to which the server listens.
    Dim prefixes As HttpListenerPrefixCollection = listener.Prefixes

    If prefixes.Count = 0 Then
        Console.WriteLine("There are no prefixes.")
    End If

    For Each prefix As String In prefixes
        Console.WriteLine(prefix)
    Next

    ' Show the listening state.
    If listener.IsListening Then
        Console.WriteLine("The server is listening.")
    End If
End Sub

備註

若要啟動 HttpListener，請呼叫 Start 方法。To start an HttpListener, call the Start method.

適用於