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Uri::ToString Method

Gets a canonical string representation for the specified Uri instance.

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

[SecurityPermissionAttribute(SecurityAction::InheritanceDemand, Flags = SecurityPermissionFlag::Infrastructure)]
virtual String^ ToString() override

Return Value

Type: System::String
A String instance that contains the unescaped canonical representation of the Uri instance. All characters are unescaped except #, ?, and %.

The string returned by this method does not contain port information when the port is the default port for the scheme.


The string returned by the ToString method may contain control characters, which can corrupt the state of a console application. You can use the GetComponents method with the UriFormat::SafeUnescaped format to remove control characters from the returned string.

The following example creates a new Uri instance from a string. It illustrates the difference between the value returned from OriginalString, which returns the string that was passed to the constructor, and from a call to ToString, which returns the canonical form of the string.

// Create a new Uri from a string address.
Uri^ uriAddress = gcnew Uri( "HTTP://www.Contoso.com:80/thick%20and%20thin.htm" );

// Write the new Uri to the console and note the difference in the two values. 
// ToString() gives the canonical version.  OriginalString gives the orginal  
// string that was passed to the constructor. 
// The following outputs "http://www.contoso.com/thick and thin.htm".
Console::WriteLine( uriAddress );

// The following outputs "HTTP://www.Contoso.com:80/thick%20and%20thin.htm".
Console::WriteLine( uriAddress->OriginalString );

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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