Uri::MakeRelativeUri Method

Determines the difference between two Uri instances.

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

public:
Uri^ MakeRelativeUri(
	Uri^ uri
)

Parameters

uri
Type: System::Uri

The URI to compare to the current URI.

Return Value

Type: System::Uri
If the hostname and scheme of this URI instance and uri are the same, then this method returns a relative Uri that, when appended to the current URI instance, yields uri.
If the hostname or scheme is different, then this method returns a Uri that represents the uri parameter.

ExceptionCondition
ArgumentNullException

uri is nullptr.

InvalidOperationException

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

The following table shows the URI instance, toUri, and the results of calling MakeRelativeUri.

Current URI instance

toUri

Return value

http://www.contoso.com/

http://www.contoso.com/test/test.htm

test/test.htm

http://www.contoso.com/test1/

http://www.contoso.com/

../

http://www.contoso.com:8000/

http://www.contoso.com/test/test.htm

http://www.contoso.com/test/test.htm

http://username@www.contoso.com/

http://www.contoso.com/test1/test1.txt

test1/test1.txt

User information, if present in the URI, is ignored.

The following example creates 2 Uri instances. The difference in the path information is written to the console.

// Create a base Uri.
Uri^ address1 = gcnew Uri( "http://www.contoso.com/" );

// Create a new Uri from a string.
Uri^ address2 = gcnew Uri( "http://www.contoso.com/index.htm?date=today" );

// Determine the relative Uri.  
Console::WriteLine( "The difference is {0}", address1->MakeRelativeUri( address2 ) );

.NET Framework

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

.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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