Uri.Scheme Property (System)

.NET Framework Class Library

Uri..::.Scheme Property

Gets the scheme name for this URI.

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

Syntax

Visual Basic (Declaration)

Public ReadOnly Property Scheme As String

Visual Basic (Usage)

Dim instance As Uri
Dim value As String

value = instance.Scheme

public string Scheme { get; }

Visual C++

public:
property String^ Scheme {
    String^ get ();
}

JScript

public function get Scheme () : String

Property Value

Type: System..::.String
A String that contains the scheme for this URI, converted to lowercase.

Exceptions

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

Remarks

The Scheme property returns the scheme used to initialize the Uri instance. This property does not indicate that the scheme used to initialize the Uri instance was recognized.

The following table shows examples of some possible values returned by the Scheme property.

Scheme	Description
file	The resource is a file on the local computer.
ftp	The resource is accessed through FTP.
gopher	The resource is accessed through the Gopher protocol.
http	The resource is accessed through HTTP.
https	The resource is accessed through SSL-encrypted HTTP.
ldap	The resource is accessed through the LDAP protocol.
mailto	The resource is an e-mail address and accessed through the SMTP protocol.
net.pipe	The resource is accessed through a named pipe.
net.tcp	The resource is accessed from TCP endpoint.
news	The resource is accessed through the NNTP protocol.
nntp	The resource is accessed through the NNTP protocol.
telnet	The resource is accessed through the TELNET protocol.
uuid	The resource is accessed through a unique UUID endpoint name for communicating with a service.

Examples

The following example writes the scheme name (http) to the console for the http://www.contoso.com/ URI.

Visual Basic

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

Console.WriteLine(myUri.Scheme)

Uri baseUri = new Uri("http://www.contoso.com/");
 Uri myUri = new Uri(baseUri, "catalog/shownew.htm?date=today");

 Console.WriteLine(myUri.Scheme);

Visual C++

Uri^ baseUri = gcnew Uri( "http://www.contoso.com/" );
Uri^ myUri = gcnew Uri( baseUri,"catalog/shownew.htm?date=today" );
Console::WriteLine( myUri->Scheme );

JScript

    var baseUri : Uri = new Uri("http://www.contoso.com/");
    var myUri : Uri = new Uri(baseUri, "catalog/shownew.htm?date=today");
    Console.WriteLine(myUri.Scheme);

CPP_OLD

    Uri* baseUri = new Uri(S"http://www.contoso.com/");
    Uri* myUri = new Uri(baseUri,S"catalog/shownew.htm?date=today");

    Console::WriteLine(myUri->Scheme);

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

Reference

Uri Class

Uri Members

System Namespace