Uri.Authority Property

Gets the Domain Name System (DNS) host name or IP address and the port number for a server.

Namespace:  System
Assembly:  System (in System.dll)

'Declaration
Public ReadOnly Property Authority As String

Property Value

Type: System.String
A String containing the authority component of the URI represented by this instance.

ExceptionCondition
InvalidOperationException

This instance represents a relative URI, and this property is valid only for absolute URIs.

The Authority property is typically a server DNS host name or IP address. This property might include the service port number if it differs from the default port for the URI. If the Authority component contains reserved characters, these are escaped in the string value returned by this property.

The following example writes the host name (www.contoso.com) and port number (8080) of the server to the console.

 Dim baseUri As New Uri("http://www.contoso.com:8080/")
 Dim myUri As New Uri(baseUri,"shownew.htm?date=today")

 Console.WriteLine(myUri.Authority)

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Portable Class Library

Supported in: Portable Class Library
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