IPAddress.None Field

Reference

Definition

Namespace:: System.Net

Assemblies:: System.dll, System.Net.Primitives.dll

Assemblies:: netstandard.dll, System.Net.Primitives.dll

Assembly:: System.Net.Primitives.dll

Assembly:: System.dll

Assembly:: netstandard.dll

Source:: IPAddress.cs

Source:: IPAddress.cs

Source:: IPAddress.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Provides an IP address that indicates that no network interface should be used. This field is read-only.

public: static initonly System::Net::IPAddress ^ None;

public static readonly System.Net.IPAddress None;

 staticval mutable None : System.Net.IPAddress

Public Shared ReadOnly None As IPAddress

Field Value

IPAddress

Examples

The following example uses the None property to indicate that no network interface should be used.

int main()
{
   
   // Gets the IP address indicating that no network interface should be used
   // and converts it to a String*.
   String^ address = IPAddress::None->ToString();
   Console::WriteLine( "IP address : {0}", address );
}

public static void Main()
{
   // Gets the IP address indicating that no network interface should be used
   // and converts it to a string.
   string address = IPAddress.None.ToString();
   Console.WriteLine("IP address : " + address);
}

Public Shared Sub Main()

    ' Gets the IP address indicating that no network interface should be used
    ' and converts it to a string. 
    Dim address As String = IPAddress.None.ToString()
    Console.WriteLine(("IP address : " + address))
End Sub

Remarks

The Socket.Bind method uses the None field to indicate that a Socket must not listen for client activity. The None field is equivalent to 255.255.255.255 in dotted-quad notation.

Applies to

Produkt	Verzie
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	1.3, 1.4, 1.6, 2.0, 2.1
UWP	10.0

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